U.S. patent application number 16/103645 was filed with the patent office on 2018-12-27 for novel proteins specific for pyoverdine and pyochelin.
The applicant listed for this patent is SANOFI. Invention is credited to Andrea ALLERSDORFER, Bernhard CALANDRA, Carsten CORVEY, Laurent FRAISSE, Marlon HINNER, Martin HULSMEYER, Kristian JENSEN, Nathalie KARST, Jochen KRUIP, Bradley LUNDE, Michael MOUREZ, Astrid REY, Christine ROTHE, Heike STUMP, Alexander WIEDENMANN.
Application Number | 20180371037 16/103645 |
Document ID | / |
Family ID | 52595246 |
Filed Date | 2018-12-27 |
United States Patent
Application |
20180371037 |
Kind Code |
A1 |
CORVEY; Carsten ; et
al. |
December 27, 2018 |
NOVEL PROTEINS SPECIFIC FOR PYOVERDINE AND PYOCHELIN
Abstract
The present disclosure provides hNGAL muteins that bind a
pyoverdine family member or pyochelin and can be used in various
application including pharmaceutical applications, for example, to
inhibit or reduce growth of P. aeruginosa. The present disclosure
also concerns methods of making one or more pyoverdine- or
pyochelin-binding muteins described herein as well as compositions
comprising one or more of such muteins. The present disclosure
further relates to nucleic acid molecules encoding such muteins and
to methods for generation of such muteins and nucleic acid
molecules. In addition, the application discloses therapeutic
and/or diagnostic uses of these muteins as well as compositions
comprising one or more of such muteins.
Inventors: |
CORVEY; Carsten; (Frankfurt
am Main, DE) ; STUMP; Heike; (Frankfurt am Main,
DE) ; KRUIP; Jochen; (Frankfurt am Main, DE) ;
CALANDRA; Bernhard; (Chilly-Mazarin Cedex, FR) ; REY;
Astrid; (Toulouse Cedex, FR) ; KARST; Nathalie;
(Vitry sur Seine, FR) ; MOUREZ; Michael; (Toulouse
Cedex, FR) ; FRAISSE; Laurent; (Toulouse Cedex,
FR) ; ROTHE; Christine; (Freising, DE) ;
ALLERSDORFER; Andrea; (Freising, DE) ; WIEDENMANN;
Alexander; (Herbrechtingen, DE) ; HINNER; Marlon;
(Freising, DE) ; LUNDE; Bradley; (Lebanon, NH)
; JENSEN; Kristian; (Landshut, DE) ; HULSMEYER;
Martin; (Romerberg, DE) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
SANOFI |
Paris |
|
FR |
|
|
Family ID: |
52595246 |
Appl. No.: |
16/103645 |
Filed: |
August 14, 2018 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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15726163 |
Oct 5, 2017 |
10072056 |
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16103645 |
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15602783 |
May 23, 2017 |
9884898 |
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15726163 |
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PCT/EP2016/053226 |
Feb 16, 2016 |
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15602783 |
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
A61K 38/005 20130101;
A61P 5/00 20180101; A61K 38/00 20130101; H05K 999/99 20130101; C07K
14/4703 20130101; A61K 38/012 20130101; C07K 14/47 20130101; A61P
31/04 20180101 |
International
Class: |
C07K 14/47 20060101
C07K014/47; A61K 38/00 20060101 A61K038/00; A61K 38/01 20060101
A61K038/01 |
Foreign Application Data
Date |
Code |
Application Number |
Feb 18, 2015 |
EP |
15305242.8 |
Claims
1-12. (canceled)
13. A nucleic acid molecule comprising a nucleotide sequence
encoding a polypeptide comprising a human neutrophil
gelatinase-associated lipocalin (hNGAL) mutein polypeptide having
binding specificity for pyoverdine type II, wherein the hNGAL
mutein comprises 10 or more mutations at positions 36, 40, 49, 52,
54, 65, 68, 70, 72, 73, 77, 79, 81, 87, 103, 106, 125, 127, 132,
and 134 of SEQ ID NO: 1.
14. A host cell containing a nucleic acid molecule of claim 13.
15. The nucleic acid molecule of claim 13, wherein the nucleic acid
molecule encodes an hNGAL mutein comprises ten or more of the
following mutations of SEQ ID NO: 1: L36V, A40T, Q49G, Y52N, T54A,
N65D, S68D, L70R, R721, K73R, D77H, W79Y, R81D, C87S, L103T, Y106Q,
K1251, S127R, Y1321, and K134W.
16. The nucleic acid molecule of claim 13, wherein the nucleic acid
molecule encodes an hNGAL mutein comprises SEQ ID NO: 36.
17. The nucleic acid molecule of claim 13, wherein the nucleic acid
molecule encodes an hNGAL mutein that has binding specificity for
pyoverdine type II succinyl, pyoverdine type II succinamid, and/or
pyoverdine type II .alpha.-ketoglutaryl.
18. The nucleic acid molecule of claim 13, wherein the nucleic acid
molecule encodes an hNGAL mutein that is capable of binding
pyoverdine type II complexed with iron with a K.sub.D of about 200
nM or lower.
19. The nucleic acid molecule of claim 13, wherein the nucleic acid
molecule encodes an hNGAL mutein comprises 12 or more mutations at
positions 36, 40, 49, 52, 54, 65, 68, 70, 72, 73, 77, 79, 81, 87,
103, 106, 125, 127, 132 and 134 of SEQ ID NO: 1.
20. A nucleic acid molecule comprising a nucleotide sequence
encoding a polypeptide comprising a human neutrophil
gelatinase-associated lipocalin (hNGAL) mutein polypeptide having
binding specificity for pyoverdine type II, wherein the hNGAL
mutein comprises 15 or more mutations at positions 36, 40, 49, 52,
54, 65, 68, 70, 72, 73, 77, 79, 81, 87, 103, 106, 125, 127, 132 and
134 of SEQ ID NO: 1.
21. A host cell containing a nucleic acid molecule of claim 20.
22. The nucleic acid molecule of claim 20, wherein the nucleic acid
molecule encodes an hNGAL mutein comprises 15 or more of the
following mutations of SEQ ID NO: 1: L36V, A40T, Q49G, Y52N, T54A,
N65D, S68D, L70R, R72I, K73R, D77H, W79Y, R81D, C87S, L103T, Y106Q,
K125I, S127R, Y132I, and K134W.
23. The nucleic acid molecule of claim 20, wherein the nucleic acid
molecule encodes an hNGAL mutein comprises SEQ ID NO: 36.
24. The nucleic acid molecule of claim 20, wherein the nucleic acid
molecule encodes an hNGAL mutein that has binding specificity for
pyoverdine type II succinyl, pyoverdine type II succinamid, and/or
pyoverdine type II .alpha.-ketoglutaryl.
25. The nucleic acid molecule of claim 20, wherein the nucleic acid
molecule encodes an hNGAL mutein that is capable of binding
pyoverdine type II complexed with iron with a K.sub.D of about 200
nM or lower.
26. A nucleic acid molecule comprising a nucleotide sequence
encoding a polypeptide comprising a human neutrophil
gelatinase-associated lipocalin (hNGAL) mutein polypeptide having
binding specificity for pyoverdine type II, wherein the hNGAL
mutein comprises SEQ ID NO: 36.
27. The nucleic acid molecule of claim 26, wherein the nucleic acid
molecule encodes an hNGAL mutein consists of SEQ ID NO: 36.
28. A host cell containing a nucleic acid molecule of claim 26.
29. The nucleic acid molecule of claim 26, wherein the nucleic acid
molecule encodes an hNGAL mutein that has binding specificity for
pyoverdine type II succinyl, pyoverdine type II succinamid, and/or
pyoverdine type II .alpha.-ketoglutaryl.
30. The nucleic acid molecule of claim 26, wherein the nucleic acid
molecule encodes an hNGAL mutein that is capable of binding
pyoverdine type II complexed with iron with a K.sub.D of about 200
nM or lower.
Description
I. BACKGROUND
[0001] Pseudomonas aeruginosa (P. aeruginosa) is an opportunistic
pathogen that causes acute infections, primarily in association
with tissue injuries. P. aeruginosa forms biofilms on indwelling
devices and on the pulmonary tissues of patients with the genetic
disorder, cystic fibrosis. Biofilm infections are difficult to
treat with conventional antibiotic therapies. However, research has
demonstrated that iron is essential for proper biofilm formation by
P. aeruginosa, and therefore iron-uptake systems are potential
targets for anti-Pseudomonas therapies.
[0002] P. aeruginosa is able to scavenge iron from the host
environment by using the secreted iron-binding siderophores,
pyochelin and pyoverdine. Pyoverdine (Pvd) is a peptide-linked
hydroxamate- and catecholate-type ligand, and pyochelin (Pch) a
derivatized conjugate of salicylate and two molecules of cysteine
and having phenol, carboxylate, and amine ligand functionalities.
Both Pvd and Pch have demonstrated roles in P. aeruginosa virulence
with some indication of synergism. Double-deficient mutants unable
to make either siderophore are much more attenuated in virulence
than either single-deficient mutant unable to make just one of the
two siderophores (Takase et al., Infection and immunity, April
2000, p. 1834-1839). Furthermore, pyoverdine acts as a signalling
molecule to control production of several virulence factors as well
as pyoverdine itself; while it has been proposed that pyochelin may
be part of a system for obtaining divalent metals such as ferrous
Iron and zinc for P. aeruginosa's pathogenicity, in addition to
ferric iron (Visca et al., 1992).
[0003] Three structurally different pyoverdine types or groups have
been identified from several P. aeruginosa strains: from P.
aeruginosa ATCC 15692 (Briskot et al., 1989, Liebigs Ann Chem, p.
375-384), from P. aeruginosa ATCC 27853 (Tappe et al., 1993, J.
Prakt-Chem., 335, p. 83-87) and from a natural isolate, P.
aeruginosa R (Gipp et al., 1991, Z. Naturforsch, 46c, p. 534-541).
Moreover, comparative biological investigations on 88 clinical
isolates and the two collection strains mentioned above revealed
three different strain-specific pyoverdine-mediated iron uptake
systems (Cornells et al., 1989, Infect Immun., 57, p. 3491-3497;
Meyer et al., 1997, Microbiology, 143, p. 35-43) according to the
reference strains: P. aeruginosa ATCC 15692 (Type I Pvd or Pvd I),
P. aeruginosa ATCC 27853 (Type II Pvd or Pvd II) and the clinical
isolates P. aeruginosa R and pa6 (Type III Pvd or Pvd III).
[0004] Each pyoverdine type has three members (subtypes) differing
in the side chain which is succinyl, succinamid or a-ketoglutaryl,
namely, Pvd type I succinyl, Pvd type I succinamid, Pvd type I
.alpha.-ketoglutaryl, Pvd type II succinyl, Pvd type II succinamid,
Pvd type II .alpha.-ketoglutaryl, Pvd type III succinyl, Pvd type
III succinamid and Pvd type III .alpha.-ketoglutaryl.
[0005] Each P. aeruginosa strain expresses one Pvd type i.e. P.
aeruginosa ATCC 15692 expresses Type I Pvd, P. aeruginosa ATCC
27853 expressesType II Pvd and P. aeruginosa R and pa6
expressesType III Pvd, whereby each Pvd type includes all three
members of the respective type, and each said strain also expresses
pyochelin.
[0006] In this regard, we identified the pyoverdins and pyochelin
as targets which are crucial for P. aeruginosa's pathogenicity and
developed specific inhibitors for such targets, as disclosed here,
i.e. for each type of Pvd including for every type the three
members (subtypes) differing in the side chain (Pvd I s, Pvd I sa,
Pvd I .alpha.KG, Pvd II s, Pvd II sa, Pvd II .alpha.KG, Pvd III s,
Pvd III sa, Pvd III .alpha.KG) as well as for Pch, and in every
case to the free siderophore as well as to the siderophore with
bound iron without creating the strong selective pressure imposed
by conventional antibiotics. In addition, we selected inhibitors
that distinguish free and iron-loaded pyochelin.
[0007] The present invention was made as a result of activities
undertaken on behalf of Pieris AG, Sanofi-Aventis and
Sanofi-Pasteur Inc., which are parties to an existing joint
research agreement, and was made within the scope of the joint
research agreement.
II. DEFINITIONS
[0008] The following list defines terms, phrases, and abbreviations
used throughout the instant specification. All terms listed and
defined herein are intended to encompass all grammatical forms.
[0009] As used herein, "pyoverdine" means a fluorescent siderophore
that is produced by the gram negative bacterium Pseudomonas
aeruginosa under iron-deficient growth conditions and has high
affinity for iron. Pyoverdines are composed of three structural
parts: a dihydroxyquinoline chromophore, a side chain and a
variable peptidic chain. The peptide chain moiety is involved in
receptor recognition and binding. Three different Pvds, differing
in their peptide chain, have been identified (types I-III). The
size and amino acid composition of pyoverdine types are unique to
each species, as well as the pyoverdine recognition specificity.
Three P. aeruginosa strains can be distinguished, each producing a
different pyoverdine type (type I-III, FIG. 1) and a cognate FpvA
receptor.
[0010] As used herein, "pyochelin" means a thiazoline derivatized
conjugate of salicylate and two molecules of cysteine and having
phenol, carboxylate, and amine ligand functionalities, produced by
P. aeruginosa and solubilizing ferric iron. Pyochelin is a
structurally unique siderophore possessing phenolate, but neither a
hydroxamate nor a catecholate moiety (see FIG. 1.)
[0011] As used herein, "detectable affinity" means the ability to
bind to a selected target with an affinity constant of generally at
least about 10.sup.-5 M or below. Lower affinities are generally no
longer measurable with common methods such as ELISA and therefore
of secondary importance.
[0012] As used herein, "binding affinity" of a protein of the
disclosure (e.g. a mutein of human lipocalin 2) or a fusion
polypeptide thereof to a selected target (in the present case,
pyoverdine or pyochelin), can be measured (and thereby KD values of
a mutein-ligand complex be determined) by a multitude of methods
known to those skilled in the art. Such methods include, but are
not limited to, fluorescence titration, direct ELISA, competition
ELISA, calorimetric methods, such as isothermal titration
calorimetry (ITC), and surface plasmon resonance (BIAcore). Such
methods are well established in the art and examples thereof are
also detailed below.
[0013] It is also noted that the complex formation between the
respective binder and its ligand is influenced by many different
factors such as the concentrations of the respective binding
partners, the presence of competitors, pH and the ionic strength of
the buffer system used, and the experimental method used for
determination of the dissociation constant K.sub.D (for example
fluorescence titration, direct ELISA, competition ELISA or surface
plasmon resonance, just to name a few) or even the mathematical
algorithm which is used for evaluation of the experimental
data.
[0014] Therefore, it is also clear to the skilled person that the
K.sub.D values (dissociation constant of the complex formed between
the respective binder and its target/ligand) may vary within a
certain experimental range, depending on the method and
experimental setup that is used for determining the affinity of a
particular mutein for a given ligand. This means that there may be
a slight deviation in the measured K.sub.D values or a tolerance
range depending, for example, on whether the K.sub.D value was
determined by surface plasmon resonance (Biacore), by competition
ELISA, or by "direct ELISA."
[0015] As used herein, a "mutein," a "mutated" entity (whether
protein or nucleic acid), or "mutant" refers to the exchange,
deletion, or insertion of one or more nucleotides or amino acids,
compared to the naturally occurring (wild-type) nucleic acid or
protein "reference" scaffold. Said term also includes fragments of
a mutein and variants as described herein. Muteins of the present
disclosure, fragments or variants thereof preferably retain the
function of binding to pyoverdine or pyochelin as described
herein.
[0016] The term "fragment" as used herein in connection with the
muteins of the disclosure relates to proteins or peptides derived
from full-length mature human lipocalin 2 that are N-terminally
and/or C-terminally shortened, i.e. lacking at least one of the
N-terminal and/or C-terminal amino acids. Such fragments may
include at least 10, more such as 20 or 30 or more consecutive
amino acids of the primary sequence of the mature human lipocalin 2
and are usually detectable in an immunoassay of the mature human
lipocalin 2. In general, the term "fragment", as used herein with
respect to the corresponding protein ligand of a mutein of the
disclosure or of the combination according to the disclosure or of
a fusion protein described herein, relates to N-terminally and/or
C-terminally shortened protein or peptide ligands, which retain the
capability of the full length ligand to be recognized and/or bound
by a mutein according to the disclosure.
[0017] The term "mutagenesis" as used herein means that the
experimental conditions are chosen such that the amino acid
naturally occurring at a given sequence position of the mature
human lipocalin 2 can be substituted by at least one amino acid
that is not present at this specific position in the respective
natural polypeptide sequence. The term "mutagenesis" also includes
the (additional) modification of the length of sequence segments by
deletion or insertion of one or more amino acids. Thus, it is
within the scope of the disclosure that, for example, one amino
acid at a chosen sequence position is replaced by a stretch of
three random mutations, leading to an insertion of two amino acid
residues compared to the length of the respective segment of the
wild type protein. Such an insertion or deletion may be introduced
independently from each other in any of the peptide segments that
can be subjected to mutagenesis in the disclosure.
[0018] The term "random mutagenesis" means that no predetermined
single amino acid (mutation) is present at a certain sequence
position but that at least two amino acids can be incorporated with
a certain probability at a predefined sequence position during
mutagenesis.
[0019] "Identity" is a property of sequences that measures their
similarity or relationship. The term "sequence identity" or
"identity" as used in the present disclosure means the percentage
of pair-wise identical residues--following (homologous) alignment
of a sequence of a polypeptide of the disclosure with a sequence in
question--with respect to the number of residues in the longer of
these two sequences. Sequence identity is measured by dividing the
number of identical amino acid residues by the total number of
residues and multiplying the product by 100.
[0020] The term "homology" is used herein in its usual meaning and
includes identical amino acids as well as amino acids which are
regarded to be conservative substitutions (for example, exchange of
a glutamate residue by an aspartate residue) at equivalent
positions in the linear amino acid sequence of a polypeptide of the
disclosure (e.g., any mutein of the disclosure).
[0021] The percentage of sequence homology or sequence identity
can, for example, be determined herein using the program BLASTP,
version blastp 2.2.5 (Nov. 16, 2002; cf. Altschul, S. F. et al.
(1997) Nucl. Acids Res. 25, 3389-3402). In this embodiment the
percentage of homology is based on the alignment of the entire
polypeptide sequences (matrix: BLOSUM 62; gap costs: 11.1; cutoff
value set to 10.sup.-3) including the propeptide sequences,
preferably using the wild type protein scaffold as reference in a
pairwise comparison. It is calculated as the percentage of numbers
of "positives" (homologous amino acids) indicated as result in the
BLASTP program output divided by the total number of amino acids
selected by the program for the alignment.
[0022] Specifically, in order to determine whether an amino acid
residue of the amino acid sequence of a mutein different from the
wild-type human lipocalin 2 corresponds to a certain position in
the amino acid sequence of the wild-type human lipocalin 2, a
skilled artisan can use means and methods well-known in the art,
e.g., alignments, either manually or by using computer programs
such as BLAST2.0, which stands for Basic Local Alignment Search
Tool or ClustalW or any other suitable program which is suitable to
generate sequence alignments. Accordingly, the wild-type human
lipocalin 2 can serve as "subject sequence" or "reference
sequence", while the amino acid sequence of a mutein different from
the wild-type human lipocalin 2 described herein serves as "query
sequence". The terms "reference sequence" and "wild type sequence"
are used interchangeably herein.
[0023] "Gaps" are spaces in an alignment that are the result of
additions or deletions of amino acids. Thus, two copies of exactly
the same sequence have 100% identity, but sequences that are less
highly conserved, and have deletions, additions, or replacements,
may have a lower degree of sequence identity. Those skilled in the
art will recognize that several computer programs are available for
determining sequence identity using standard parameters, for
example Blast (Altschul, et al. (1997) Nucleic Acids Res. 25,
3389-3402), Blast2 (Altschul, et al. (1990) J. Mol. Biol. 215,
403-410), and Smith-Waterman (Smith, et al. (1981) J. Mol. Biol.
147, 195-197).
[0024] The term "variant" as used in the present disclosure relates
to derivatives of a protein or peptide that include modifications
of the amino acid sequence, for example by substitution, deletion,
insertion or chemical modification. Such modifications do in some
embodiments not reduce the functionality of the protein or peptide.
Such variants include proteins, wherein one or more amino acids
have been replaced by their respective D-stereoisomers or by amino
acids other than the naturally occurring 20 amino acids, such as,
for example, omithine, hydroxyproline, citrulline, homoserine,
hydroxylysine, norvaline. However, such substitutions may also be
conservative, i.e. an amino acid residue is replaced with a
chemically similar amino acid residue. Examples of conservative
substitutions are the replacements among the members of the
following groups: 1) alanine, serine, and threonine; 2) aspartic
acid and glutamic acid; 3) asparagine and glutamine; 4) arginine
and lysine; 5) isoleucine, leucine, methionine, and valine; and 6)
phenylalanine, tyrosine, and tryptophan.
[0025] By a "native sequence" human lipocalin 2 is meant human
lipocalin 2 that has the same amino acid sequence as the
corresponding polypeptide derived from nature. Thus, a native
sequence human lipocalin 2 can have the amino acid sequence of the
respective naturally-occurring human lipocalin 2. Such native
sequence polypeptide can be isolated from nature or can be produced
by recombinant or synthetic means. The term "native sequence"
polypeptide specifically encompasses naturally-occurring truncated
or secreted forms of the human lipocalin 2, naturally-occurring
variant forms such as alternatively spliced forms and
naturally-occurring allelic variants of human lipocalin 2. A
polypeptide "variant" means a biologically active polypeptide
having at least about 50%, 60%, 70%, 80% or at least about 85%
amino acid sequence identity with the native sequence polypeptide.
Such variants include, for instance, polypeptides in which one or
more amino acid residues are added or deleted at the N- or
C-terminus of the polypeptide. Generally a variant has at least
about 70%, including at least about 80%, such as at least about 85%
amino acid sequence identity, including at least about 90% amino
acid sequence identity or at least about 95% amino acid sequence
identity with the native sequence polypeptide.
[0026] The term "position" when used in accordance with the
disclosure means the position of either an amino acid within an
amino acid sequence depicted herein or the position of a nucleotide
within a nucleic acid sequence depicted herein. To understand the
term "correspond" or "corresponding" as used herein in the context
of the amino acid sequence positions of one or more muteins, a
corresponding position is not only determined by the number of the
preceding nucleotides/amino acids. Accordingly, the position of a
given amino acid in accordance with the disclosure which may be
substituted may vary due to deletion or addition of amino acids
elsewhere in a (mutant or wild-type) human lipocalin 2. Similarly,
the position of a given nucleotide in accordance with the present
disclosure which may be substituted may vary due to deletions or
additional nucleotides elsewhere in a mutein or wild type human
lipocalin 2 5'-untranslated region (UTR) including the promoter
and/or any other regulatory sequences or gene (including exons and
introns).
[0027] Thus, for a corresponding position in accordance with the
disclosure, it is preferably to be understood that the positions of
nucleotides/amino acids may differ in the indicated number than
similar neighbouring nucleotides/amino acids, but said neighbouring
nucleotides/amino acids, which may be exchanged, deleted, or added,
are also comprised by the one or more corresponding positions.
[0028] In addition, for a corresponding position in a mutein based
on a reference scaffold in accordance with the disclosure, it is
preferably to be understood that the positions of nucleotides/amino
acids are structurally corresponding to the positions elsewhere in
a mutein or wild-type human lipocalin 2, even if they may differ in
the indicated number.
[0029] The term "organic molecule" or "small organic molecule" as
used herein for the non-natural target denotes an organic molecule
comprising at least two carbon atoms, but preferably not more than
7 or 12 rotatable carbon bonds, having a molecular weight in the
range between 100 and 2000 Dalton, preferably between 100 and 1000
Dalton, and optionally including one or two metal atoms.
[0030] The word "detect", "detection", "detectable" or "detecting"
as used herein is understood both on a quantitative and a
qualitative level, as well as a combination thereof. It thus
includes quantitative, semi-quantitative and qualitative
measurements of a molecule of interest.
[0031] A "subject" is a vertebrate, preferably a mammal, more
preferably a human. The term "mammal" is used herein to refer to
any animal classified as a mammal, including, without limitation,
humans, domestic and farm animals, and zoo, sports, or pet animals,
such as sheep, dogs, horses, cats, cows, rats, pigs, apes such as
cynomolgous monkeys and etc., to name only a few illustrative
examples. Preferably, the mammal herein is human.
[0032] An "effective amount" is an amount sufficient to effect
beneficial or desired results. An effective amount can be
administered in one or more administrations.
[0033] A "sample" is defined as a biological sample taken from any
subject. Biological samples include, but are not limited to, blood,
serum, urine, feces, semen, or tissue.
III. DESCRIPTIONS OF FIGURES
[0034] FIG. 1A-FIG. 1E: shows the structure of P. aeruginosa
siderophores. FIG. 1A-C show the structures of the three P.
aeruginosa pyoverdines. FIG. 1A: Structure of Pvd type I Birskot et
al., 1989); FIG. 1B: Structure of Pvd type II (see Birskot et al.,
1989): FIG. 1C: Structure of Pvd type III (Gipp et al., 1991); FIG.
1 D: R attached to the chormophore part can be a succinyl,
succinamid or .alpha.-ketoglutaryl side chain; and FIG. 1 E:
Structure of pyochelin (Brandel et al., 2011).
[0035] FIG. 2A-FIG. 2H: provides typical measurements of on-rate
and off-rate by Surface Plasmon Resonance for Pvd I s (+Fe) binding
to the lipocalin mutein SEQ ID NO: 16 (FIG. 2A), Pvd II s (+Fe)
binding to the lipocalin mutein SEQ ID NO: 36 (FIG. 2B), Pvd III
(+Fe) binding to the lipocalin mutein SEQ ID NO: 53 (FIG. 2C) and
Pyochelin (+Fe) binding to SEQ ID NO: 62 (FIG. 2D). In addition,
absence of binding of the respective siderophores at 1200 nM (200
nM for Pyochelin) to the negative control lipocalin SEQ ID NO: 64
is shown in FIG. 2E-FIG. 2H.
[0036] FIG. 3: shows an exemplary specificity and crossreactivity
profile for the lipocalin mutein SEQ ID NO: 35 as determined by
Surface Plasmon Resonance. Specific binding to Pyoverdin II
succinyl, succinamid and .alpha.-ketoglutaryl is demonstrated,
while absence of binding to Pyoverdines of type I and type III.
Pyochelin, Enterobactin and Desferoxamin is shown. High
concentrations of 2 .mu.M are used for all analytes.
[0037] FIG. 4A-FIG. 4D: shows exemplary data from growth inhibition
assay. FIG. 4A: Pvd I specific mutein SEQ ID NO: 16 shows growth
inhibition of a Pvd I specific P. aeruginosa strain (ATCC27853)
compared to the control culture growing without mutein. FIG. 4B:
Pvd II specific muteins SEQ ID NOs: 19 and 36 show growth
inhibition of a Pvd II specific P. aeruginosa strain (ATCC 15692)
compared to the control culture growing without mutein. SEQ ID NO:
36 has a higher binding affinity compared to SEQ ID NO: 19 and
shows a greater growth inhibition. FIG. 4C: Pvd III specific mutein
SEQ ID NO: 53 shows growth inhibition of a Pvd III specific P.
aeruginosa strain (ATCC33360) compared to the control culture
growing without mutein. FIG. 4D: Pch specific muteins SEQ ID NO: 62
shows growth inhibition of a Pvd I knock out P. aeruginosa strain
(ATCC15692 .DELTA.pvdA) relying on Pch for iron uptake compared to
the control culture growing without mutein. 10 .mu.M lipocalin
muteins were applied in the assay.
[0038] FIG. 5: shows in a P. aeruginosa-induced lung infection
model in mice that administration of SEQ ID NO: 19, 1 hour before
and at time of bacteria challenge, prevents the development of
infection in mice in a dose-dependent manner. A significant
prevention effect was observed starting from SEQ ID NO: 19 at 200
.mu.g/mouse, with a maximal effect at 2000 .mu.g/mouse.
[0039] FIG. 6: shows the amino acid sequence expressed for
crystallisation including a start methionine at position 1, a
lysine at position 2, a hexahistidine tag at position 3-8, a linker
region of amino acids DYDIPTT at position 9-15 (SEQ ID NO: 132),
the tobacco etch viral (TEV) protease cleavage site ENLYFQG at
position 16-22 (SEQ ID NO: 133) followed by the amino acid sequence
of the mutein of interest from position 23 onwards.
[0040] FIG. 7: shows the SEQ ID NO: 31--Pvd-Fe complex structure.
An overlay of two SEQ ID NO: 31 molecules i.e. chain A and chain B
from an asymmetric unit.
[0041] FIG. 8: shows SEQ ID NO: 31 and Pvd-Fe interactions. Two
molecules from asymmetric unit are overlaid. Side chains
interacting with Pvd-Fe are depicted.
[0042] FIG. 9: shows the Pvd composition. Oxygen atoms involved in
iron binding are boxed.
IV. DETAILED DESCRIPTION OF THE DISCLOSURE
[0043] The current disclosure provides a polypeptide having binding
specificity for pyoverdine type I, II, III or pyochelin, wherein
the polypeptide comprises an hNGAL mutein that binds pyoverdine
type I, II, III or pyochelin with detectable affinity.
[0044] The term "human lipocalin 2" or "human Lcn 2" or "human
NGAL" or "hNGAL" as used herein refers to the mature human
neutrophil gelatinase-associated lipocalin (NGAL) with the
SWISS-PROT/UniProt Data Bank Accession Number P80188. A human
lipocalin 2 mutein of the disclosure may also be designated herein
as "an hNGAL mutein". The amino acid sequence shown in
SWISS-PROT/UniProt Data Bank Accession Number P80188 may be used as
a preferred "reference sequence", more preferably the amino acid
sequence shown in SEQ ID NO: 1 is used as reference sequence.
[0045] In some embodiments, an hNGAL mutein binding pyoverdine
(type I, II or III) or pyochelin with detectable affinity may
include at least one amino acid substitution of a native cysteine
residue by another amino acid, for example, a serine residue. In
some other embodiments, a mutein binding pyoverdine or pyochelin
with detectable affinity may include one or more non-native
cysteine residues substituting one or more amino acids of wild-type
hNGAL. In a further particular embodiment, an hNGAL mutein
according to the disclosure includes at least two amino acid
substitutions of a native amino acid by a cysteine residue, hereby
to form one or more cysteine briges. In some embodiments, said
cysteine bridge may connect at least two loop regions. The
definition of these regions is used herein in accordance with
Flower (Flower, 1996, supra, Flower, et al., 2000, supra) and
Breustedt et al. (2005, supra).
[0046] In some embodiments, an hNGAL mutein of the disclosure does
not bind to enterobactin.
[0047] In one aspect, the present disclosure includes various hNGAL
muteins that bind pyoverdine or pyochelin with at least detectable
affinity. In this sense, pyoverdine or pyochelin is regarded as a
non-natural ligand of the reference wild-type hNGAL, where
"non-natural ligand" refers to a compound that does not bind to
wild-type human lipocalin 2 under physiological conditions. By
engineering wild-type hNGAL with one or more mutations at certain
sequence positions, the present inventors have demonstrated that
high affinity and high specificity for the non-natural ligand,
pyoverdine or pyochelin, is possible. In some embodiments, at 1, 2,
3, 4, 5, 6, 7, 8, 9, 10, 11, 12 or even more nucleotide triplet(s)
encoding certain sequence positions on wild-type I human lipocalin
2, a random mutagenesis may be carried out through substitution at
these positions by a subset of nucleotide triplets.
[0048] Further, the muteins of the disclosure may have a mutated
amino acid residue at any one or more, including at least at any
one, two, three, four, five, six, seven, eight, nine, ten, eleven
or twelve, of the sequence positions corresponding to certain
sequence positions of the linear polypeptide sequence of hNGAL,
such as sequence positions 28, 34, 36, 39-42, 44-47, 49, 52, 54-55,
65, 68, 70, 72-75, 77, 79-81, 87, 96, 100, 103, 106, 108, 123, 125,
127, 132, 134, 141 and 145 of the linear polypeptide sequence of
human NGAL (SEQ ID NO: 1).
[0049] A mutein of the disclosure may include the wild type
(natural) amino acid sequence of the "parental" protein scaffold
(such as hNGAL) outside the mutated amino acid sequence positions.
In some embodiments, an hNGAL mutein according to the disclosure
may also carry one or more amino acid mutations at a sequence
position/positions as long as such a mutation does, at least
essentially not hamper or not interfere with the binding activity
and the folding of the mutein. Such mutations can be accomplished
very easily on DNA level using established standard methods
(Sambrook, J. et al. (2001) Molecular Cloning: A Laboratory Manual,
3rd Ed., Cold Spring Harbor Laboratory Press, Cold Spring Harbor,
N.Y.). Illustrative examples of alterations of the amino acid
sequence are insertions or deletions as well as amino acid
substitutions. Such substitutions may be conservative, i.e. an
amino acid residue is replaced with an amino acid residue of
chemically similar properties, in particular with regard to
polarity as well as size. Examples of conservative substitutions
are the replacements among the members of the following groups: 1)
alanine, serine, and threonine; 2) aspartic acid and glutamic acid;
3) asparagine and glutamine; 4) arginine and lysine; 5) isoleucine,
leucine, methionine, and valine; and 6) phenylalanine, tyrosine,
and tryptophan. On the other hand, it is also possible to introduce
non-conservative alterations in the amino acid sequence. In
addition, instead of replacing single amino acid residues, it is
also possible to either insert or delete one or more continuous
amino acids of the primary structure of the human lipocalin 2 as
long as these deletions or insertion result in a stable
folded/functional mutein (for example, hNGAL muteins with truncated
N- and C-terminus). In such mutein, for instance, one or more amino
acid residues are added or deleted at the N- or C-terminus of the
polypeptide. Generally such a mutein may have about at least 70%,
including at least about 80%, such as at least about 85% amino acid
sequence identity, with the amino acid sequence of the mature
hNGAL. As an illustrative example, the present disclosure also
encompasses hNGAL muteins as defined above, in which the four amino
acid residues (G-N--I-K; positions 95-98; SEQ ID NO: 130) of the
linear polypeptide sequence of the mature hNGAL have been deleted
(e.g. SEQ ID NO: 46).
[0050] The amino acid sequence of an hNGAL mutein disclosed herein
has a high sequence identity to the mature hNGAL (SEQ ID NO: 1)
when compared to sequence identities with other lipocalins. In this
general context, the amino acid sequence of a mutein of the
disclosure is at least substantially similar to the amino acid
sequence of the natural wild-type hNGAL, with the proviso that
possibly there are gaps (as defined below) in an alignment that are
the result of additions or deletions of amino acids. A respective
sequence of a mutein of the disclosure, being substantially similar
to the sequences of the mature hNGAL, has, in some embodiments, at
least 70% identity or sequence homology, at least 75% identity or
sequence homology, at least 80% identity or sequence homology, at
least 82% identity or sequence homology, at least 85% identity or
sequence homology, at least 87% identity or sequence homology, or
at least 90% identity or sequence homology including at least 95%
identity or sequence homology, to the sequence of the mature hNGAL,
with the proviso that the altered position or sequence is retained
and that one or more gaps are possible.
[0051] As used herein, a mutein of the disclosure "specifically
binds" a target (for example, pyoverdine or pyochelin) if it is
able to discriminate between that target and one or more reference
targets, since binding specificity is not an absolute, but a
relative property. "Specific binding" can be determined, for
example, in accordance with Western blots, ELISA-, RIA-, ECL-,
IRMA-tests, FACS, IHC and peptide scans.
[0052] In one embodiment, the muteins of the disclosure are fused
at its N-terminus and/or its C-terminus to a fusion partner which
is a protein domain that extends the serum half-life of the mutein.
In further particular embodiments, the protein domain is a Fc part
of an immunoglobulin, a CH3 domain of an immunoglobulin, a CH4
domain of an immunoglobulin, an albumin binding peptide, or an
albumin binding protein.
[0053] In another embodiment, the muteins of the disclosure are
conjugated to a compound that extends the serum half-life of the
mutein. More preferably, the mutein is conjugated to a compound
selected from the group consisting of a polyalkylene glycol
molecule, a hydroethylstarch, an Fc part of an immunoglobulin, a
CH3 domain of an immoglobulin, a CH4 domain of an immunoglobulin,
an albumin binding peptide, and an albumin binding protein.
[0054] In yet another embodiment, the current disclosure relates to
a nucleic acid molecule comprising a nucleotide sequence encoding a
mutein disclosed herein. The disclosure encompasses a host cell
containing said nucleic acid molecule.
Muteins Specific for Pyoverdine.
[0055] Study of the P. aeruginosa isolates so far helped classify
pyoverdine into three different types (Meyer et al., Use of
Siderophores to Type Pseudomonads: The Three Pseudomonas Aeruginosa
Pyoverdine Systems, Microbiology, 1997; vol. 143 no. 1 35-43).
Roughly 42% of the P. aeruginosa isolates have a pyoverdine system
identical to that of Pvd type I, 42% of the P. aeruginosa isolates
behave like Pvd type II, while 16% of the P. aeruginosa isolates
belong to Pvd type III, respectively (Cornelis et al., 1989a; Table
4). Each type has three members (subtypes) differing in the side
chain which is succinyl, succinamid or .alpha.-ketoglutaryl,
namely, Pvd type I succinyl, Pvd type I succinamid, Pvd type I
.alpha.-ketoglutaryl, Pvd type II succinyl, Pvd type II succinamid,
Pvd type II .alpha.-ketoglutaryl, Pvd type III succinyl, Pvd type
III succinamid and Pvd type III a-ketoglutaryl.
[0056] To tackle P. aeruginosa producing different types of
pyoverdine, the present disclosure provides hNGAL muteins directed
against different types of pyoverdine. The disclosure also provides
useful applications for such muteins, methods of making
pyoverdine-binding hNGAL muteins described herein as well as
compositions comprising such muteins. Pyoverdine-binding hNGAL
muteins of the disclosure as well as compositions thereof may be
used in methods of detecting pyoverdine in a sample or in methods
of binding of pyoverdine in a subject. No such hNGAL muteins having
these features attendant to the uses provided by present disclosure
have been previously described.
[0057] Pyoverdine did not bind to the natural wild-type hNGAL,
while hNGAL's natural ligand, enterobactin, docks into the calyx of
hNGAL with high affinity. Pyoverdine, therefore, is a virulence
factor and a stealth siderophore that evades hNGAL recognition,
allowing P. aeruginosa to establish infection (Peek et al.,
Pyoverdine, the Major Siderophore in Pseudomonas aeruginosa, Evades
NGAL Recognition, Interdisciplinary Perspectives on Infectious
Diseases, 2012).
[0058] Accordingly, it is an object of the present disclosure to
provide muteins derived from human neutrophil gelatinase associated
lipocalin (NGAL), also termed as human lipocalin 2, which muteins,
in contrast to nature wild-type hNGAL, have high specificity for
pyoverdine.
Exemplary Muteins Specific for Pyoverdine.
[0059] In one aspect, the present disclosure relates to novel,
specific-binding human lipocalin 2 (human Lcn2 or hNGAL) muteins
specific for one type of pyoverdine, such as Pvd type I, Pvd type
II or Pvd type III.
[0060] One embodiment of the current disclosure relates to a mutein
that is capable of binding one type of pyoverdine with detectable
affinity, such as an affinity measured by a K.sub.D of about 200 nM
or lower, such as about 150 nM or lower.
[0061] In one aspect, the current disclosure provides an hNGAL
mutein that is capable of binding Pvd type I complexed with iron
with a K.sub.D of about 20 nM or lower, such as 15 nM or lower, for
example, when measured by Biacore T200 instrument in an assay
essentially described in Example 6.
[0062] In some further embodiments, one or more hNGAL muteins of
this disclosure are capable of binding Pvd type I succinyl, Pvd
type I succinamid and Pvd type I .alpha.-ketoglutaryl with and
without complexed iron, with an affinity measured by an IC50 value
of about 200 nM or lower, for example, when measured in an ELISA
assay essentially described in Example 5.
[0063] In some embodiments, the mutein is capable of inhibiting
iron uptake mediated by pyoverdine type I succinyl with an IC50
value of about 150 nM or lower in a competition ELISA format
essentially described in Example 7.
[0064] In some embodiments, the mutein is capable of inhibiting
bacterial growth of Pvd I strain in an assay essentially described
in Example 8.
[0065] In this regard, the disclosure relates to a polypeptide,
wherein said polypeptide includes an hNGAL mutein, and said hNGAL
in comparison with the linear polypeptide sequence of the mature
hNGAL, comprises at least 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
13, 14, 15, 16, 17, 18, 19, 20, 21, or even more, mutated amino
acid residues at the sequence positions 28, 36, 39-41, 46, 49, 52,
54-55, 59, 65, 68, 70, 72-75, 77, 79-81, 87, 96, 100, 103, 106,
125, 127, 132, 134 and 136, and wherein said polypeptide binds Pvd
type I, including Pvd type I succinyl, Pvd type I succinamid and
Pvd type I a-ketoglutaryl.
[0066] In some embodiments, a Pvd-type-I-binding hNGAL mutein of
the disclosure includes, at any one or more of the sequence
positions 36, 40-41, 49, 52, 68, 70, 72-73, 77, 79, 81, 96, 100,
103, 106, 125, 127, 132 and 134 of the linear polypeptide sequence
of the mature hNGAL (SEQ ID NO: 1), one or more of the following
mutated amino acid residues: Leu 36.fwdarw.Asn. Thr, Val, Trp or
Phe; Ala 40.fwdarw.Gly, Asn, Thr or Phe; Ile 41.fwdarw.Arg, Ala,
Thr, Phe or Trp; Gln 49.fwdarw.Ile, Leu, Vla, Ala or Pro; Tyr
52.fwdarw.Met, Trp or Pro; Ser 68.fwdarw.Asp, Vla or Glu; Leu
70.fwdarw.Gln, Trp, Asp or Thr; Arg 72.fwdarw.Trp, Ala, Ser, Leu,
Pro or Glu; Lys 73.fwdarw.Asp, Leu, Ala, Glu or Asn; Asp
77.fwdarw.Arg, Leu, Tyr, Ser, Gln, Thr, lie or Asn; Trp
79.fwdarw.Gln, Asp, Ser, Arg, Met or Glu; Arg 81.fwdarw.Gln, Gly,
Ile, Glu, His or Asp; Asn 96.fwdarw.His, Ile, Gly, Tyr or Asp; Tyr
100.fwdarw.Lys, Glu, Asn, Ser, Phe or Tyr; Leu 103.fwdarw.Lys, Pro,
Gln, His, Asp, Tyr, Glu, Trp or Asn; Tyr 106.fwdarw.His, Gln or
Phe; Lys 125.fwdarw.Arg, Ser, Trp, Tyr, Val or Gly; Ser
127.fwdarw.Trp, Asn, Ala, Thr, Tyr, His, Ile, Val or Asp; Tyr
132.fwdarw.Trp, Asn, Gly or Lys; and Lys 134.fwdarw.Asn, His, Trp,
Gly, Gln or Asp. In some embodiments, an hNGAL mutein of the
disclosure includes two or more, such as 3, 4, 5, 6, 7, 8, 9, 10,
11, 12, or even more or all mutated amino acid residues at these
sequence positions of the mature hNGAL.
[0067] Additionally, a Pvd-type-I-binding hNGAL mutein according to
the disclosure may also comprise the following substitution in
comparison with the linear polypeptide sequence of the mature
hNGAL: Gln 28.fwdarw.His; Lys 46.fwdarw.Glu; Thr 54.fwdarw.Vla or
Ala; Ile 55.fwdarw.Vla; Lys 59.fwdarw.Arg; Asn 65.fwdarw.Asp or
Gln; Ile 80.fwdarw.Thr; Cys 87.fwdarw.Ser or Asn; and Thr
136.fwdarw.Ala.
[0068] In some additional embodiments, an hNGAL mutein of the
disclosure, which binds to Pvd type I, includes the following amino
acid replacements in comparison with the linear polypeptide
sequence of the mature hNGAL:
[0069] Gln 28.fwdarw.His; Leu 36.fwdarw.Asn; Ala 40.fwdarw.Gly; Ile
41.fwdarw.Trp; Gln 49.fwdarw.Ile; Tyr 52.fwdarw.Met; Ser
68.fwdarw.Val; Leu 70.fwdarw.Gln; Arg 72.fwdarw.Trp; Lys
73.fwdarw.Asp; Asp 77.fwdarw.Leu; Trp 79.fwdarw.Gln; Arg
81.fwdarw.Gln; Cys 87.fwdarw.Ser; Asn 96.fwdarw.His; Tyr
100.fwdarw.Lys; Leu 103.fwdarw.His; Tyr 106.fwdarw.His; Lys
125.fwdarw.Arg; Ser 127.fwdarw.Trp; Tyr 132.fwdarw.Trp; Lys
134.fwdarw.Asp;
[0070] Gln 28.fwdarw.His; Leu 36.fwdarw.Thr; Ala 40.fwdarw.Gly; Ile
41.fwdarw.Phe; Gln 49.fwdarw.Leu; Tyr 52.fwdarw.Trp; Leu
70.fwdarw.Trp; Arg 72.fwdarw.Ala; Lys 73.fwdarw.Leu; Asp
77.fwdarw.Tyr; Trp 79.fwdarw.Asp; Arg 81.fwdarw.Gly; Cys
87.fwdarw.Ser; Asn 96.fwdarw.Ile; Tyr 100.fwdarw.Glu; Leu
103.fwdarw.His; Tyr 106.fwdarw.Gln; Lys 125.fwdarw.Trp; Ser
127.fwdarw.Asn; Tyr 132.fwdarw.Asn; Lys 134.fwdarw.Gln;
[0071] Gln 28.fwdarw.His; Leu 36.fwdarw.Trp; Ala 40.fwdarw.Thr; Ile
41.fwdarw.Thr; Gln 49.fwdarw.Pro; Tyr 52.fwdarw.Pro; Ser
68.fwdarw.Asp; Leu 70.fwdarw.Gln; Arg 72.fwdarw.Ser; Lys
73.fwdarw.Glu; Asp 77.fwdarw.Ser; Trp 79.fwdarw.Ser; Arg
81.fwdarw.Ile; Cys 87.fwdarw.Ser; Asn 96.fwdarw.Gly; Tyr
100.fwdarw.Asn; Leu 103.fwdarw.Lys; Tyr 106.fwdarw.His; Lys
125.fwdarw.Tyr; Ser 127.fwdarw.Ala; Tyr 132.fwdarw.Gly; Lys
134.fwdarw.Asn;
[0072] Gln 28.fwdarw.His; Leu 36.fwdarw.Phe; Ala 40.fwdarw.Asn; Ile
41.fwdarw.Arg; Gln 49.fwdarw.Pro; Tyr 52.fwdarw.Met; Ser
68.fwdarw.Asp; Leu 70.fwdarw.Thr; Arg 72.fwdarw.Glu; Lys
73.fwdarw.Ala; Asp 77.fwdarw.Arg; Trp 79.fwdarw.Arg; Arg
81.fwdarw.Ile; Cys 87.fwdarw.Ser; Asn 96.fwdarw.Tyr; Tyr
100.fwdarw.Lys; Leu 103.fwdarw.Pro; Tyr 106.fwdarw.Phe; Lys
125.fwdarw.Ser; Ser 127.fwdarw.Thr; Tyr 132.fwdarw.Trp; Lys
134.fwdarw.Gly;
[0073] Gln 28.fwdarw.His; Ala 40.fwdarw.Gly; Ile 41.fwdarw.Trp; Gln
49.fwdarw.Val; Tyr 52.fwdarw.Met; Ser 68.fwdarw.Val; Leu
70.fwdarw.Asp; Arg 72.fwdarw.Glu; Lys 73.fwdarw.Leu; Asp
77.fwdarw.Arg; Trp 79.fwdarw.Met; Arg 81.fwdarw.Glu; Cys
87.fwdarw.Ser; Asn 96.fwdarw.Asp; Tyr 100.fwdarw.Phe; Leu
103.fwdarw.Trp; Tyr 106.fwdarw.Gln; Lys 125.fwdarw.Gly; Ser
127.fwdarw.Tyr; Tyr 132.fwdarw.Trp; Lys 134.fwdarw.His;
[0074] Gln 28.fwdarw.His; Leu 36.fwdarw.Val; Ala 40.fwdarw.Phe; Ile
41.fwdarw.Phe; Gln 49.fwdarw.Ala; Tyr 52.fwdarw.Pro; Ser
68.fwdarw.Glu; Leu 70.fwdarw.Trp; Arg 72.fwdarw.Leu; Lys
73.fwdarw.Asn; Asp 77.fwdarw.Gln; Trp 79.fwdarw.Glu; Arg
81.fwdarw.His; Cys 87.fwdarw.Ser; Asn 96.fwdarw.Tyr; Leu
103.fwdarw.Tyr; Tyr 106.fwdarw.His; Lys 125.fwdarw.Val; Ser
127.fwdarw.His; Tyr 132.fwdarw.Lys; Lys 134.fwdarw.Trp;
[0075] Gln 28.fwdarw.His; Leu 36.fwdarw.Trp; Ala 40.fwdarw.Thr; Ile
41.fwdarw.Thr; Gln 49.fwdarw.Pro; Tyr 52.fwdarw.Pro; Ser
68.fwdarw.Asp; Leu 70.fwdarw.Gln; Arg 72.fwdarw.Ser Lys
73.fwdarw.Glu; Asp 77.fwdarw.Ser; Trp 79.fwdarw.Ser; Ile
80.fwdarw.Thr; Arg 81.fwdarw.Ile; Cys 87.fwdarw.Ser; Asn
96.fwdarw.Gly; Tyr 100.fwdarw.Ser; Leu 103.fwdarw.Gln; Tyr
106.fwdarw.His; Lys 125.fwdarw.Tyr; Ser 127.fwdarw.Ile; Tyr
132.fwdarw.Gly; Lys 134.fwdarw.Asn;
[0076] Gln 28.fwdarw.His; Leu 36.fwdarw.Trp; Ala 40.fwdarw.Thr; Ile
41.fwdarw.Thr; Gln 49.fwdarw.Pro; Tyr 52.fwdarw.Pro; Ser
68.fwdarw.Asp; Leu 70.fwdarw.Gln; Arg 72.fwdarw.Ser; Lys
73.fwdarw.Asp; Asp 77.fwdarw.Ser; Trp 79.fwdarw.Ser; Arg
81.fwdarw.Ile; Cys 87.fwdarw.Ser; Asn 96.fwdarw.Gly; Tyr
100.fwdarw.Asn; Leu 103.fwdarw.Asp: Tyr 106.fwdarw.His; Lys
125.fwdarw.Tyr; Ser 127.fwdarw.Val; Tyr 132.fwdarw.Gly; Lys
134.fwdarw.Asn;
[0077] Gln 28.fwdarw.His; Leu 36.fwdarw.Trp; Ala 40.fwdarw.Thr; Ile
41.fwdarw.Thr; Gln 49.fwdarw.Pro; Tyr 52.fwdarw.Pro; Ser
68.fwdarw.Asp; Leu 70.fwdarw.Gln; Arg 72.fwdarw.Ser; Lys
73.fwdarw.Glu; Asp 77.fwdarw.Thr; Trp 79.fwdarw.Ser; Arg
81.fwdarw.Ile; Cys 87.fwdarw.Ser; Asn 96.fwdarw.Asp; Tyr
100.fwdarw.Asn; Leu 103.fwdarw.Glu; Tyr 106.fwdarw.His; Lys
125.fwdarw.Tyr; Ser 127.fwdarw.Asp; Tyr 132.fwdarw.Gly; Lys
134.fwdarw.Asn;
[0078] Gln 28.fwdarw.His; Leu 36.fwdarw.Trp; Ala 40.fwdarw.Thr; Ile
41.fwdarw.Thr; Gln 49.fwdarw.Pro; Tyr 52.fwdarw.Pro; Ser
68.fwdarw.Asp; Leu 70.fwdarw.Gln; Arg 72.fwdarw.Ser; Lys
73.fwdarw.Asp; Asp 77.fwdarw.Val; Trp 79.fwdarw.Ser; Arg
81.fwdarw.Ile; Cys 87.fwdarw.Ser; Asn 96.fwdarw.Gly; Tyr
100.fwdarw.Asn; Leu 103.fwdarw.Asn; Tyr 106.fwdarw.His; Lys
125.fwdarw.Tyr; Ser 127.fwdarw.Vla; Tyr 132.fwdarw.Gly; Lys
134.fwdarw.Asn;
[0079] Gln 28.fwdarw.His; Ala 40.fwdarw.Gly; Ile 41.fwdarw.Trp; Gln
49.fwdarw.Leu; Tyr 52.fwdarw.Met; Ser 68.fwdarw.Val; Leu
70.fwdarw.Asp; Arg 72.fwdarw.Glu; Lys 73.fwdarw.Leu; Asp
77.fwdarw.Arg; Trp 79.fwdarw.Met; Arg 81.fwdarw.Glu; Cys
87.fwdarw.Ser; Asn 96.fwdarw.Asp; Tyr 100.fwdarw.Ser; Leu
103.fwdarw.Trp; Tyr 106.fwdarw.Gln; Lys 125.fwdarw.Gly; Ser
127.fwdarw.Tyr; Tyr 132.fwdarw.Trp; Lys 134.fwdarw.His;
[0080] Gln 28.fwdarw.His; Leu 36.fwdarw.Trp; Ala 40.fwdarw.Thr; Ile
41.fwdarw.Thr; Gln 49.fwdarw.Pro; Tyr 52.fwdarw.Pro; Thr
54.fwdarw.Val; Ser 68.fwdarw.Asp; Leu 70.fwdarw.Gln; Arg
72.fwdarw.Ser; Lys 73.fwdarw.Glu; Lys 75.fwdarw.Glu; Asp
77.fwdarw.Ser; Trp 79.fwdarw.Ser; Ile 80.fwdarw.Thr; Arg
81.fwdarw.Ile; Cys 87.fwdarw.Ser; Asn 96.fwdarw.Gly; Tyr
100.fwdarw.Ser; Leu 103.fwdarw.Gln; Tyr 106.fwdarw.His; Lys
125.fwdarw.Tyr; Ser 127.fwdarw.Thr; Tyr 132.fwdarw.Gly; Lys
134.fwdarw.Asn;
[0081] Gln 28.fwdarw.His; Ala 40.fwdarw.Gly; Ile 41.fwdarw.Trp; Lys
46.fwdarw.Glu; Gln 49.fwdarw.Leu; Tyr 52.fwdarw.Met; Thr
54.fwdarw.Ala; Ile 55.fwdarw.Vla; Lys 59.fwdarw.Arg; Ser
68.fwdarw.Val; Leu 70.fwdarw.Asp; Arg 72.fwdarw.Glu; Lys
73.fwdarw.Leu; Lys 74.fwdarw.Glu; Lys 75.fwdarw.Glu; Asp
77.fwdarw.Arg; Trp 79.fwdarw.Met; Ile 80.fwdarw.Thr; Arg
81.fwdarw.Glu; Ser 87.fwdarw.Asn; Asn 96.fwdarw.Asp; Tyr
100.fwdarw.sER; Leu 103.fwdarw.Trp; Tyr 106.fwdarw.Gln; Lys
125.fwdarw.Gly; Ser 127.fwdarw.Tyr; Tyr 132.fwdarw.Trp; Lys
134.fwdarw.His;
[0082] Leu 36.fwdarw.Trp; Asn 39.fwdarw.Asp; Ala 40.fwdarw.Thr; Ile
41.fwdarw.Thr; Gln 49.fwdarw.Pro; Tyr 52.fwdarw.Pro; Thr
54.fwdarw.Val; Asn 65.fwdarw.Asp; Ser 68.fwdarw.Asp; Leu
70.fwdarw.Gln; Arg 72.fwdarw.Ser; Lys 73.fwdarw.Glu; Lys
75.fwdarw.Glu; Asp 77.fwdarw.Ser; Trp 79.fwdarw.Ser; Ile
80.fwdarw.Thr; Arg 81.fwdarw.Ile; Cys 87.fwdarw.Ser; Asn
96.fwdarw.Gly; Tyr 100.fwdarw.Ser; Leu 103.fwdarw.Gln; Tyr
106.fwdarw.His; Lys 125.fwdarw.Tyr; Ser 127.fwdarw.Thr; Tyr
132.fwdarw.Gly; Lys 134.fwdarw.Asn; Thr 136.fwdarw.Ala;
[0083] Leu 36.fwdarw.Trp; Ala 40.fwdarw.Thr; Ile 41.fwdarw.Ala; Gln
49.fwdarw.Pro; Tyr 52.fwdarw.Pro; Thr 54.fwdarw.Val; Asn
65.fwdarw.Asp; Ser 68.fwdarw.Asp; Leu 70.fwdarw.Gln; Arg
72.fwdarw.Ser; Lys 73.fwdarw.Glu; Lys 75.fwdarw.Glu; Asp
77.fwdarw.Ser; Trp 79.fwdarw.Ser; Ile 80.fwdarw.Thr; Arg
81.fwdarw.Ile; Cys 87.fwdarw.Ser; Asn 96.fwdarw.Gly; Tyr
100.fwdarw.Ser; Leu 103.fwdarw.Gln; Tyr 106.fwdarw.His; Lys
125.fwdarw.Tyr; Ser 127.fwdarw.Thr; Tyr 132.fwdarw.Gly; Lys
134.fwdarw.Asn; Thr 136.fwdarw.Ala;
[0084] Gln 28.fwdarw.His; Ala 40.fwdarw.Gly; Ile 41.fwdarw.Trp; Lys
46.fwdarw.Glu; Gln 49.fwdarw.Leu; Tyr 52.fwdarw.Met; Thr
54.fwdarw.Ala; Ile 55.fwdarw.Vla; Lys 59.fwdarw.Arg; Asn
65.fwdarw.Asp; Ser 68.fwdarw.Val; Leu 70.fwdarw.Asp; Arg
72.fwdarw.Glu; Lys 73.fwdarw.Leu; Lys 74.fwdarw.Glu; Lys
75.fwdarw.Glu; Asp 77.fwdarw.Arg; Trp 79.fwdarw.Met; Ile
80.fwdarw.Thr; Arg 81.fwdarw.Glu; Ser 87.fwdarw.Asn; Asn
96.fwdarw.Asp; Tyr 100.fwdarw.sER; Leu 103.fwdarw.Trp; Tyr
106.fwdarw.Gln; Lys 125.fwdarw.Gly; Ser 127.fwdarw.Tyr; Tyr
132.fwdarw.Trp; Lys 134.fwdarw.His; or
[0085] Gln 28.fwdarw.His; Ala 40.fwdarw.Gly; Ile 41.fwdarw.Trp; Lys
46.fwdarw.Glu; Gln 49.fwdarw.Leu; Tyr 52.fwdarw.Met; Thr
54.fwdarw.Ala; Ile 55.fwdarw.Vla; Lys 59.fwdarw.Arg; Asn
65.fwdarw.Gln; Ser 68.fwdarw.Val; Leu 70.fwdarw.Asp; Arg
72.fwdarw.Glu; Lys 73.fwdarw.Leu; Lys 74.fwdarw.Glu; Lys
75.fwdarw.Glu; Asp 77.fwdarw.Arg; Trp 79.fwdarw.Met; Ile
80.fwdarw.Thr; Arg 81.fwdarw.Glu; Ser 87.fwdarw.Asn; Asn
96.fwdarw.Asp; Tyr 100.fwdarw.sER; Leu 103.fwdarw.Trp; Tyr
106.fwdarw.Gln; Lys 125.fwdarw.Gly; Ser 127.fwdarw.Tyr; Tyr
132.fwdarw.Trp; Lys 134.fwdarw.His.
[0086] In the residual region, i.e. the region differing from
sequence positions 28, 36, 39-41, 46, 49, 52, 54-55, 59, 65, 68,
70, 72-75, 77, 79-81, 87, 96, 100, 103, 106, 125, 127, 132, 134 and
136, an hNGAL mutein of the disclosure may include the wild type
(natural) amino acid sequence outside the mutated amino acid
sequence positions.
[0087] In further particular embodiments, a mutein according to the
current disclosure comprises an amino acid sequence selected from
the group consisting of SEQ ID NOs: 2-18 or a fragment or variant
thereof.
[0088] The amino acid sequence of a Pvd-type-I-binding hNGAL mutein
of the disclosure may have a high sequence identity, such as at
least 70%, at least 75%, at least 80%, at least 82%, at least 85%,
at least 87%, at least 90% identity, including at least 95%
identity, to a sequence selected from the group consisting of SEQ
ID NOs: 2-18.
[0089] The disclosure also includes structural homologues of an
hNGAL mutein having an amino acid sequence selected from the group
consisting of SEQ ID NOs: 2-18, which structural homologues have an
amino acid sequence homology or sequence identity of more than
about 60%, preferably more than 65%, more than 70%, more than 75%,
more than 80%, more than 85%, more than 90%, more than 92% and most
preferably more than 95% in relation to said hNGAL mutein.
[0090] A Pvd-type-I-binding hNGAL mutein according to the present
disclosure can be obtained by means of mutagenesis of a naturally
occurring form of human lipocalin 2. In some embodiments of the
mutagenesis, a substitution (or replacement) is a conservative
substitution. Nevertheless, any substitution--including
non-conservative substitution or one or more from the exemplary
substitutions below--is envisaged as long as the mutein retains its
capability to bind to Pvd type I, and/or it has an identity to the
then substituted sequence in that it is at least 60%, such as at
least 65%, at least 70%, at least 75%, at least 80%, at least 85%
or higher identity to the amino acid sequence of the mature human
lipocalin 2 (SWISS-PROT Data Bank Accession Number P80188).
[0091] In another aspect, the current disclosure provides an hNGAL
mutein that binds Pvd type II complexed with iron with a K.sub.D of
about 20 nM or lower, such as 5 nM or lower, for example, when
measured by Biacore T200 instrument in an assay essentially
described in Example 6.
[0092] In some still further embodiments, one or more hNGAL muteins
of this disclosure are capable of binding Pvd type II succinyl, Pvd
type II succinamid and Pvd type II a-ketoglutaryl with and without
complexed iron, with an affinity measured by an IC50 value of about
200 nM or lower, for example, when measured in an ELISA assay
essentially described in Example 5.
[0093] In some embodiments, the mutein is capable of inhibiting
iron uptake mediated by pyoverdine type II succinyl with an IC50
value of about 150 nM or lower in a competition ELISA format
essentially described in Example 7.
[0094] In some embodiments, the mutein is capable of inhibiting
bacterial growth of Pvd II strain in an assay essentially described
in Example 8.
[0095] In some other embodiments, the mutein is capable of
inhibiting or lessening growth of P. aeruginosa stains expressing
pyoverdine type II in an assay essentially described in Example
10.
[0096] In this regard, the disclosure relates to a polypeptide,
wherein said polypeptide includes an hNGAL mutein, and said hNGAL
in comparison with the linear polypeptide sequence of the mature
hNGAL, comprises at least 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
13, 14, 15, 16, 17, 18, 19, 20, 21, or even more, mutated amino
acid residues at the sequence positions 28, 36, 40-41, 49, 52, 54,
65, 68, 70, 72-75, 77, 79, 81, 87, 96, 100, 103, 106, 125, 127, 132
and 134, and wherein said polypeptide binds Pvd type II.
[0097] In some embodiments, a Pvd-type-II-binding hNGAL mutein of
the disclosure includes, at any one or more of the sequence
positions 36, 40-41, 49, 52, 68, 70, 72-73, 77, 79, 81, 87, 96,
100, 103, 106, 125, 127, 132 and 134 of the linear polypeptide
sequence of the mature hNGAL (SEQ ID NO: 1), one or more of the
following mutated amino acid residues: Leu 36.fwdarw.Asn, Ile or
Val; Ala 40.fwdarw.Glu, Gly, Asn, Thr or His; Ile 41.fwdarw.Arg,
Val or Thr; Gln 49.fwdarw.Gly, Ala or Pro; Tyr 52.fwdarw.Asn, Gly,
Trp or Pro; Ser 68.fwdarw.Asp, Arg or Glu; Leu 70.fwdarw.Arg or
Trp; Arg 72.fwdarw.His, Ile, Ala, Ser or Gly; Lys 73.fwdarw.Asn,
Met, Pro, Phe, Gln or Arg; Asp 77.fwdarw.His, Ile, Met, Lys, Gly or
Asn; Trp 79.fwdarw.Ser, Tyr, Ala, Asp, Phe or Trp; Arg
81.fwdarw.Glu, Ser, Tyr or Asp; Asn 96.fwdarw.Met, Ile, Arg, Asp,
Lys, Asn or Ala; Tyr 100.fwdarw.Lys, Glu, Asn, Ser, Phe or Tyr; Leu
103.fwdarw.Thr, Ile, Gln, Gly, Met, His, Trp or Val; Tyr
106.fwdarw.Met, Gln, Ala, Ile, Asn, Gly, Met or Phe; Lys
125.fwdarw.Ala, Ile or Asn; Ser 127.fwdarw.Lys, Arg, Ser, Met, Asp
or Asn; Tyr 132.fwdarw.Met, Phe, Asn, Ala, Ile, Gly or Val; and Lys
134.fwdarw.Trp or Tyr. In some embodiments, an hNGAL mutein of the
disclosure includes two or more, such as 3, 4, 5, 6, 7, 8, 9, 10,
11, 12, or even more or all mutated amino acid residues at these
sequence positions of the mature hNGAL.
[0098] Additionally, a Pvd-type-II-binding hNGAL mutein according
to the disclosure may also comprise the following substitution in
comparison with the linear polypeptide sequence of the mature
hNGAL: Gln 28.fwdarw.His; Thr 54.fwdarw.Ala; Asn 65.fwdarw.Asp or
Gln and Cys 87.fwdarw.Ser.
[0099] In some additional embodiments, an hNGAL mutein of the
disclosure, which binds to Pvd type II, includes the following
amino acid replacements in comparison with the linear polypeptide
sequence of the mature hNGAL:
[0100] Gln 28.fwdarw.His; Leu 36.fwdarw.Val; Ala 40.fwdarw.Glu; Ile
41.fwdarw.Val; Gln 49.fwdarw.Gly; Tyr 52.fwdarw.Pro; Ser
68.fwdarw.Glu; Leu 70.fwdarw.Arg; Arg 72.fwdarw.His; Lys
73.fwdarw.Asn; Asp 77.fwdarw.Asn; Trp 79.fwdarw.Ser; Arg
81.fwdarw.Glu; Cys 87.fwdarw.Ser; Tyr 100.fwdarw.Asn; Leu
103.fwdarw.Gln; Tyr 106.fwdarw.Met; Ser 127.fwdarw.Lys; Tyr
132.fwdarw.Gly; Lys 134.fwdarw.Trp;
[0101] Gln 28.fwdarw.His; Ala 40.fwdarw.Thr; Ile 41.fwdarw.Ile; Gln
49.fwdarw.Gly; Tyr 52.fwdarw.Asn; Ser 68.fwdarw.Asp; Leu
70.fwdarw.Arg; Arg 72.fwdarw.Ile; Lys 73.fwdarw.Met; Asp
77.fwdarw.His; Trp 79.fwdarw.Tyr; Arg 81.fwdarw.Glu; Cys
87.fwdarw.Ser; Asn 96.fwdarw.Ile; Tyr 100.fwdarw.Asn; Leu
103.fwdarw.Thr; Tyr 106.fwdarw.Gln; Lys 125.fwdarw.Ile; Ser
127.fwdarw.Arg; Tyr 132.fwdarw.Met; Lys 134.fwdarw.Trp;
[0102] Gln 28.fwdarw.His; Leu 36.fwdarw.Ile; Ala 40.fwdarw.Thr; Ile
41.fwdarw.Val; Gln 49.fwdarw.Gly; Tyr 52.fwdarw.Pro; Ser
68.fwdarw.Glu; Leu 70.fwdarw.Arg; Arg 72.fwdarw.Ala; Lys
73.fwdarw.Pro; Asp 77.fwdarw.Ile; Trp 79.fwdarw.Ser; Arg
81.fwdarw.Ser; Cys 87.fwdarw.Ser; Asn 96.fwdarw.Met; Tyr
100.fwdarw.Ser; Leu 103.fwdarw.Gly; Tyr 106.fwdarw.Ala; Lys
125.fwdarw.Lys; Tyr 132.fwdarw.Val; Lys 134.fwdarw.Trp;
[0103] Gln 28.fwdarw.His; Ala 40.fwdarw.Asn; Gln 49.fwdarw.Ala; Tyr
52.fwdarw.Pro; Ser 68.fwdarw.Glu; Leu 70.fwdarw.Arg; Arg
72.fwdarw.Ser; Lys 73.fwdarw.Gln; Asp 77.fwdarw.Met; Trp
79.fwdarw.Ala; Arg 81.fwdarw.Tyr; Cys 87.fwdarw.Ser; Asn
96.fwdarw.Arg; Tyr 100.fwdarw.Pro; Leu 103.fwdarw.Thr; Tyr
106.fwdarw.Ile; Lys 125.fwdarw.Lys; Ser 127.fwdarw.Met; Tyr
132.fwdarw.Phe; Lys 134.fwdarw.Trp;
[0104] Gln 28.fwdarw.His; Ala 40.fwdarw.His; Gln 49.fwdarw.Ala; Tyr
52.fwdarw.Pro; Ser 68.fwdarw.Glu; Leu 70.fwdarw.Asp; Arg
72.fwdarw.Gly; Lys 73.fwdarw.Arg; Asp 77.fwdarw.His; Trp
79.fwdarw.Trp; Arg 81.fwdarw.Glu; Cys 87.fwdarw.Ser; Asn
96.fwdarw.Arg; Tyr 100.fwdarw.Asp; Leu 103.fwdarw.Met; Tyr
106.fwdarw.Phe; Lys 125.fwdarw.Ala; Ser 127.fwdarw.Asp; Tyr
132.fwdarw.Asn; Lys 134.fwdarw.Trp;
[0105] Gln 28.fwdarw.His; Leu 36.fwdarw.Asn; Ala 40.fwdarw.Gly; Ile
41.fwdarw.Arg; Gln 49.fwdarw.Pro; Tyr 52.fwdarw.Trp; Ser
68.fwdarw.Arg; Leu 70.fwdarw.Trp; Arg 72.fwdarw.Asn; Lys
73.fwdarw.Gln; Asp 77.fwdarw.Lys; Trp 79.fwdarw.Asp; Arg
81.fwdarw.Glu; Cys 87.fwdarw.Ser; Asn 96.fwdarw.Asp; Tyr
100.fwdarw.Thr; Leu 103.fwdarw.Trp; Tyr 106.fwdarw.Asn; Lys
125.fwdarw.Asn; Ser 127.fwdarw.Met; Tyr 132.fwdarw.Ile; Lys
134.fwdarw.Tyr;
[0106] Gln 28.fwdarw.His; Leu 36.fwdarw.Vla; Ala 40.fwdarw.Thr; Ile
41.fwdarw.Thr; Gln 49.fwdarw.Gly; Tyr 52.fwdarw.Gly; Ser
68.fwdarw.Glu; Leu 70.fwdarw.Arg; Arg 72.fwdarw.Gly; Lys
73.fwdarw.Arg; Asp 77.fwdarw.Gly; Trp 79.fwdarw.Trp; Arg
81.fwdarw.Glu; Cys 87.fwdarw.Ser; Asn 96.fwdarw.Ala; Tyr
100.fwdarw.Trp; Leu 103.fwdarw.Ile; Tyr 106.fwdarw.Gly; Lys
125.fwdarw.Lys; Ser 127.fwdarw.Asn; Tyr 132.fwdarw.Val; Lys
134.fwdarw.Trp;
[0107] Gln 28.fwdarw.His; Leu 36.fwdarw.Val; Ala 40.fwdarw.Glu; Ile
41.fwdarw.Val; Gln 49.fwdarw.Gly; Tyr 52.fwdarw.Pro; Ser
68.fwdarw.Glu; Leu 70.fwdarw.Arg; Arg 72.fwdarw.His; Lys
73.fwdarw.Asn; Asp 77.fwdarw.Asn; Trp 79.fwdarw.Ser; Arg
81.fwdarw.Glu; Cys 87.fwdarw.Ser; Asn 96.fwdarw.Lys; Tyr
100.fwdarw.Asn; Leu 103.fwdarw.Val; Tyr 106.fwdarw.Met; Lys
125.fwdarw.Asn; Ser 127.fwdarw.Lys; Tyr 132.fwdarw.Gly; Lys
134.fwdarw.Trp;
[0108] Gln 28.fwdarw.His; Leu 36.fwdarw.Val; Ala 40.fwdarw.Thr; Ile
41.fwdarw.Val; Gln 49.fwdarw.Gly; Tyr 52.fwdarw.Pro; Ser
68.fwdarw.Glu; Leu 70.fwdarw.Arg; Arg 72.fwdarw.His; Lys
73.fwdarw.Asn; Asp 77.fwdarw.Asn; Trp 79.fwdarw.Ser; Arg
81.fwdarw.Glu; Cys 87.fwdarw.Ser; Leu 103.fwdarw.Gln; Tyr
106.fwdarw.Met; Ser 127.fwdarw.Lys; Tyr 132.fwdarw.Val; Lys
134.fwdarw.Trp;
[0109] Gln 28.fwdarw.His; Leu 36.fwdarw.Val; Ala 40.fwdarw.Thr; Ile
41.fwdarw.Val; Gln 49.fwdarw.Gly; Tyr 52.fwdarw.Pro; Ser
68.fwdarw.Glu; Leu 70.fwdarw.Arg; Arg 72.fwdarw.His; Asp
77.fwdarw.Asn; Trp 79.fwdarw.Phe; Arg 81.fwdarw.Glu; Cys
87.fwdarw.Ser; Asn 96.fwdarw.Lys; Tyr 100.fwdarw.His; Leu
103.fwdarw.Gln; Tyr 106.fwdarw.Met; Ser 127.fwdarw.Lys; Tyr
132.fwdarw.Ala; Lys 134.fwdarw.Trp;
[0110] Gln 28.fwdarw.His; Leu 36.fwdarw.Val; Ala 40.fwdarw.Gly; Ile
41.fwdarw.Val; Gln 49.fwdarw.Gly; Tyr 52.fwdarw.Pro; Ser
68.fwdarw.Glu; Leu 70.fwdarw.Arg; Arg 72.fwdarw.His; Lys
73.fwdarw.Asn; Asp 77.fwdarw.Asn; Trp 79.fwdarw.Trp; Arg
81.fwdarw.Glu; Cys 87.fwdarw.Ser; Tyr 100.fwdarw.Asn; Leu
103.fwdarw.His; Tyr 106.fwdarw.Met; Ser 127.fwdarw.Lys; Tyr
132.fwdarw.Gly; Lys 134.fwdarw.Trp;
[0111] Gln 28.fwdarw.His; Leu 36.fwdarw.Val; Ala 40.fwdarw.Thr; Ile
41.fwdarw.Ile; Gln 49.fwdarw.Gly; Tyr 52.fwdarw.Asn; Ser
68.fwdarw.Asp; Leu 70.fwdarw.Arg; Arg 72.fwdarw.Ile; Lys
73.fwdarw.Phe; Asp 77.fwdarw.His; Trp 79.fwdarw.Tyr; Arg
81.fwdarw.Asp; Cys 87.fwdarw.Ser; Leu 103.fwdarw.Met; Tyr
106.fwdarw.Gln; Lys 125.fwdarw.Ile; Ser 127.fwdarw.Arg; Tyr
132.fwdarw.Ile; Lys 134.fwdarw.Trp;
[0112] Gln 28.fwdarw.His; Leu 36.fwdarw.Val; Ala 40.fwdarw.Thr; Ile
41.fwdarw.Ile; Gln 49.fwdarw.Gly; Tyr 52.fwdarw.Asn; Ser
68.fwdarw.Asp; Leu 70.fwdarw.Arg; Arg 72.fwdarw.Ile; Lys
73.fwdarw.Arg; Asp 77.fwdarw.His; Trp 79.fwdarw.Tyr; Arg
81.fwdarw.Asp; Cys 87.fwdarw.Ser; Leu 103.fwdarw.Thr; Tyr
106.fwdarw.Gln; Lys 125.fwdarw.Ile; Ser 127.fwdarw.Arg; Tyr
132.fwdarw.Ile; Lys 134.fwdarw.Trp;
[0113] Gln 28.fwdarw.His; Leu 36.fwdarw.Val; Ala 40.fwdarw.Glu; Ile
41.fwdarw.Val; Gln 49.fwdarw.Gly; Tyr 52.fwdarw.Pro; Asn
65.fwdarw.Asp; Ser 68.fwdarw.Glu; Leu 70.fwdarw.Arg; Arg
72.fwdarw.His; Lys 73.fwdarw.Asn; Asp 77.fwdarw.Asn; Trp
79.fwdarw.Phe; Arg 81.fwdarw.Glu; Cys 87.fwdarw.Ser; Asn
96.fwdarw.Lys; Tyr 100.fwdarw.Asn; Leu 103.fwdarw.Val; Tyr
106.fwdarw.Met; Lys 125.fwdarw.Asn; Ser 127.fwdarw.Lys; Tyr
132.fwdarw.Gly; Lys 134.fwdarw.Trp;
[0114] Gln 28.fwdarw.His; Leu 36.fwdarw.Val; Ala 40.fwdarw.Glu; Ile
41.fwdarw.Val; Gln 49.fwdarw.Gly; Tyr 52.fwdarw.Pro; Asn
65.fwdarw.Gln; Ser 68.fwdarw.Glu; Leu 70.fwdarw.Arg; Arg
72.fwdarw.His; Lys 73.fwdarw.Asn; Asp 77-, Asn; Trp 79.fwdarw.Phe;
Arg 81.fwdarw.Glu; Cys 87.fwdarw.Ser; Asn 96.fwdarw.Lys; Tyr
100.fwdarw.Asn; Leu 103.fwdarw.Val; Tyr 106.fwdarw.Met; Lys
125.fwdarw.Asn; Ser 127.fwdarw.Lys; Tyr 132.fwdarw.Gly; Lys
134.fwdarw.Trp;
[0115] Gln 28.fwdarw.His; Leu 36.fwdarw.Val; Ala 40.fwdarw.Thr; Ile
41.fwdarw.Ile; Gln 49.fwdarw.Gly; Tyr 52.fwdarw.Asn; Thr
54.fwdarw.Ala; Asn 65.fwdarw.Asp; Ser 68.fwdarw.Asp; Leu
70.fwdarw.Arg; Arg 72.fwdarw.Ile; Lys 73.fwdarw.Arg; Asp
77.fwdarw.His; Trp 79.fwdarw.Tyr; Arg 81.fwdarw.Asp; Cys
87.fwdarw.Ser; Leu 103.fwdarw.Thr; Tyr 106.fwdarw.Gln; Lys
125.fwdarw.Ile; Ser 127.fwdarw.Arg; Tyr 132.fwdarw.Ile; Lys
134.fwdarw.Trp;
[0116] Gln 28.fwdarw.His; Leu 36.fwdarw.Val; Ala 40.fwdarw.Thr; Ile
41.fwdarw.Ile; Gln 49.fwdarw.Gly; Tyr 52.fwdarw.Asn; Thr
54.fwdarw.Ala; Asn 65.fwdarw.Gln; Ser 68.fwdarw.Asp; Leu
70.fwdarw.Arg; Arg 72.fwdarw.Ile; Lys 73.fwdarw.Arg; Asp
77.fwdarw.His; Trp 79.fwdarw.Tyr; Arg 81.fwdarw.Asp; Cys
87.fwdarw.Ser; Leu 103.fwdarw.Thr; Tyr 106.fwdarw.Gln; Lys
125.fwdarw.Ile; Ser 127.fwdarw.Arg; Tyr 132.fwdarw.Ile; Lys
134.fwdarw.Trp;
[0117] Leu 36.fwdarw.Val; Ala 40.fwdarw.Thr; Ile 41.fwdarw.Ile; Gln
49.fwdarw.Gly; Tyr 52.fwdarw.Asn; Thr 54.fwdarw.Ala; Asn
65.fwdarw.Asp; Ser 68.fwdarw.Asp; Leu 70.fwdarw.Arg; Arg
72.fwdarw.Ile; Lys 73.fwdarw.Arg; Asp 77.fwdarw.His; Trp
79.fwdarw.Tyr; Arg 81.fwdarw.Asp; Cys 87.fwdarw.Ser; Leu
103.fwdarw.Thr; Tyr 106.fwdarw.Gln; Lys 125.fwdarw.Ile; Ser
127.fwdarw.Arg; Tyr 132.fwdarw.Ile; Lys 134.fwdarw.Trp; or
[0118] Gln 28.fwdarw.His; Leu 36.fwdarw.Val; Ala 40.fwdarw.Thr; Ile
41.fwdarw.Ile; Gln 49.fwdarw.Gly; Tyr 52.fwdarw.Asn; Asn
65.fwdarw.Gln; Ser 68.fwdarw.Asp; Leu 70.fwdarw.Arg; Arg
72.fwdarw.Ile; Lys 73.fwdarw.Arg; Asp 77.fwdarw.His; Trp
79.fwdarw.Tyr; Arg 81.fwdarw.Asp; Cys 87.fwdarw.Ser; Leu
103.fwdarw.Thr; Tyr 106.fwdarw.Gln; Lys 125.fwdarw.Ile; Ser
127.fwdarw.Arg; Tyr 132.fwdarw.Ile; Lys 134.fwdarw.Trp.
[0119] In the residual region, i.e. the region differing from
sequence positions 28, 36, 40-41, 49, 52, 54, 65, 68, 70, 72-75,
77, 79, 81, 87, 96, 100, 103, 106, 125, 127, 132 and 134, an hNGAL
mutein of the disclosure may include the wild type (natural) amino
acid sequence outside the mutated amino acid sequence
positions.
[0120] In further particular embodiments, a mutein according to the
current disclosure comprises an amino acid sequence selected from
the group consisting of SEQ ID NOs: 19-37 or a fragment or variant
thereof.
[0121] The amino acid sequence of a Pvd-type-II-binding hNGAL
mutein of the disclosure may have a high sequence identity, such as
at least 70%, at least 75%, at least 80%, at least 82%, at least
85%, at least 87%, at least 90% identity, including at least 95%
identity, to a sequence selected from the group consisting of SEQ
ID NOs: 19-37.
[0122] The disclosure also includes structural homologues of an
hNGAL mutein having an amino acid sequence selected from the group
consisting of SEQ ID NOs: 19-37, which structural homologues have
an amino acid sequence homology or sequence identity of more than
about 60%, preferably more than 65%, more than 70%, more than 75%,
more than 80%, more than 85%, more than 90%, more than 92% and most
preferably more than 95% in relation to said hNGAL mutein.
[0123] A Pvd-type-II-binding hNGAL mutein according to the present
disclosure can be obtained by means of mutagenesis of a naturally
occurring form of human lipocalin 2. In some embodiments of the
mutagenesis, a substitution (or replacement) is a conservative
substitution. Nevertheless, any substitution--including
non-conservative substitution or one or more from the exemplary
substitutions below--is envisaged as long as the mutein retains its
capability to bind to Pvd type I, and/or it has an identity to the
then substituted sequence in that it is at least 60%, such as at
least 65%, at least 70%, at least 75%, at least 80%, at least 85%
or higher identity to the amino acid sequence of the mature human
lipocalin 2 (SWISS-PROT Data Bank Accession Number P80188).
[0124] In still another aspect, the current disclosure provides an
hNGAL mutein that binds Pvd type III complexed with iron with a
K.sub.D of about 20 nM or lower, such as 10 nM or lower, for
example, when measured by Biacore T200 instrument in an assay
essentially described in Example 6.
[0125] In some still further embodiments, one or more hNGAL muteins
of this disclosure are capable of binding Pvd type III succinyl,
Pvd type III succinamid and Pvd type II a-ketoglutaryl with and
without complexed iron, with an affinity measured by an IC50 value
of about 200 nM or lower, for example, when measured in an ELISA
assay essentially described in Example 5.
[0126] In some embodiments, the mutein is capable of inhibiting
iron uptake mediated by pyoverdine type III with an IC50 value of
about 150 nM or lower in a competition ELISA format essentially
described in Example 7.
[0127] In some embodiments, the mutein is capable of inhibiting
bacterial growth of Pvd III strain in an assay essentially
described in Example 8.
[0128] In this regard, the disclosure relates to a polypeptide,
wherein said polypeptide includes an hNGAL mutein, and said hNGAL
in comparison with the linear polypeptide sequence of the mature
hNGAL, comprises at least 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
13, 14, 15, 16, 17, 18, 19, 20, 21, or even more, mutated amino
acid residues at the sequence positions 28, 36, 40-42, 45-47, 49,
52, 65, 68, 70, 72-73, 77, 79, 81, 87, 96, 100, 103, 105-106, 125,
127, 132, 134 and 145, and wherein said polypeptide binds Pvd type
III.
[0129] In some embodiments, a Pvd-type-III-binding hNGAL mutein of
the disclosure includes, at any one or more of the sequence
positions 36, 40-41, 49, 52, 68, 70, 72-73, 77, 79, 81, 96, 100,
103, 106, 125, 127, 132 and 134 of the linear polypeptide sequence
of the mature hNGAL (SEQ ID NO: 1), one or more of the following
mutated amino acid residues: Leu 36.fwdarw.Phe or Glu; Ala
40.fwdarw.Trp, Leu or Arg; Ile 41.fwdarw.Met, Arg, Ala. Leu or Trp;
Gln 49.fwdarw.His, Ile, Arg, Lys, Met or Pro; Tyr 52.fwdarw.Asn,
Tyr, Arg, Ser or Met; Ser 68.fwdarw.Asp, Asn, Glu or Gln; Leu
70.fwdarw.Lys, Asn or Arg; Arg 72.fwdarw.Leu, Arg, Gln or Tyr; Lys
73.fwdarw.His, Leu, Ala, Pro, Gln or Tyr; Asp 77.fwdarw.Ala, Ile,
Lys, Gln or Arg; Trp 79.fwdarw.Ser or Asp; Arg 81.fwdarw.His, Ala,
Ser or Val; Asn 96.fwdarw.Met, Ile, Arg, Gly, Leu or Val; Tyr
100.fwdarw.Ala, Ile, Asn, Pro or Asp; Leu 103.fwdarw.Gln, Gly, Phe
or Pro; Tyr 106.fwdarw.Glu; Lys 125.fwdarw.Trp or Thr; Ser
127.fwdarw.Val, His, Ile, Phe or Ala; Tyr 132.fwdarw.Phe; and Lys
134.fwdarw.Trp, Gln or Glu. In some embodiments, an hNGAL mutein of
the disclosure includes two or more, such as 3, 4, 5, 6, 7, 8, 9,
10, 11, 12, or even more or all mutated amino acid residues at
these sequence positions of the mature hNGAL.
[0130] Additionally, a Pvd-type-III-binding hNGAL mutein according
to the disclosure may also comprise the following substitution in
comparison with the linear polypeptide sequence of the mature
hNGAL: Gln 28.fwdarw.His; Leu 42.fwdarw.Arg; Asp 45.fwdarw.Gly; Lys
46.fwdarw.Arg; Asp 47.fwdarw.Asn; Asn 65.fwdarw.Asp; Cys
87.fwdarw.Ser; Ser 105.fwdarw.Pro and Thr 145.fwdarw.Pro.
[0131] In some additional embodiments, an hNGAL mutein of the
disclosure, which binds to Pvd type III, includes the following
amino acid replacements in comparison with the linear polypeptide
sequence of the mature hNGAL:
[0132] Gln 28.fwdarw.His; Leu 36.fwdarw.Phe: Ala 40.fwdarw.Trp; Ile
41.fwdarw.Met; Gln 49.fwdarw.His; Tyr 52.fwdarw.Asn; Ser
68.fwdarw.Glu; Leu 70.fwdarw.Lys; Arg 72.fwdarw.Gln; Lys
73.fwdarw.Ala; Asp 77.fwdarw.Ile; Trp 79.fwdarw.Ser; Arg
81.fwdarw.His; Cys 87.fwdarw.Ser; Asn 96.fwdarw.Ile; Tyr
100.fwdarw.Asn; Leu 103.fwdarw.Gly; Tyr 106.fwdarw.Glu; Lys
125.fwdarw.Trp; Ser 127.fwdarw.His; Tyr 132.fwdarw.Phe; Lys
134.fwdarw.Gln;
[0133] Gln 28.fwdarw.His; Leu 36.fwdarw.Phe; Ala 40.fwdarw.Arg; Ile
41.fwdarw.Trp; Gln 49.fwdarw.Ile; Tyr 52.fwdarw.Tyr; Ser
68.fwdarw.Gln; Leu 70.fwdarw.Asn; Arg 72.fwdarw.Trp; Lys
73.fwdarw.Leu; Asp 77.fwdarw.Ala; Trp 79.fwdarw.Ser; Arg
81.fwdarw.Ser; Cys 87.fwdarw.Ser; Asn 96.fwdarw.Arg; Tyr
100.fwdarw.Ile; Leu 103.fwdarw.Pro; Tyr 106.fwdarw.Glu; Lys
125.fwdarw.Thr; Ser 127.fwdarw.Ile; Tyr 132.fwdarw.Phe; Lys
134.fwdarw.Glu;
[0134] Gln 28.fwdarw.His; Leu 36.fwdarw.Phe; Ala 40.fwdarw.Leu; Ile
41.fwdarw.Leu; Gln 49.fwdarw.Arg; Tyr 52.fwdarw.Arg; Ser
68.fwdarw.Asp; Leu 70.fwdarw.Arg; Arg 72.fwdarw.Leu; Lys
73.fwdarw.Tyr; Asp 77.fwdarw.Ile; Trp 79.fwdarw.Ser; Arg
81.fwdarw.Ala; Cys 87.fwdarw.Ser; Asn 96.fwdarw.Gly; Tyr
100.fwdarw.Ala; Leu 103.fwdarw.Phe; Tyr 106.fwdarw.Glu; Lys
125.fwdarw.Trp; Ser 127.fwdarw.Ala; Lys 134.fwdarw.Glu;
[0135] Gln 28.fwdarw.His; Leu 36.fwdarw.Phe; Ala 40.fwdarw.Trp; Ile
41.fwdarw.Arg; Gln 49.fwdarw.Pro; Tyr 52.fwdarw.Ser; Ser
68.fwdarw.Asn; Leu 70.fwdarw.Arg; Arg 72.fwdarw.Trp; Lys
73.fwdarw.Pro; Asp 77.fwdarw.Arg; Trp 79.fwdarw.Ser; Arg
81.fwdarw.Ser; Cys 87.fwdarw.Ser; Asn 96.fwdarw.Met; Tyr
100.fwdarw.Pro; Leu 103.fwdarw.Gly; Tyr 106.fwdarw.Glu; Lys
125.fwdarw.Trp; Ser 127.fwdarw.Phe; Tyr 132.fwdarw.Phe; Lys
134.fwdarw.Glu;
[0136] Gln 28.fwdarw.His; Leu 36.fwdarw.Glu; Ala 40.fwdarw.Leu; Ile
41.fwdarw.Ala; Gln 49.fwdarw.Lys; Tyr 52.fwdarw.Met; Ser
68.fwdarw.Glu; Leu 70.fwdarw.Arg; Lys 73.fwdarw.His; Asp
77.fwdarw.Gln; Trp 79.fwdarw.Asp; Arg 81.fwdarw.Ala; Cys
87.fwdarw.Ser; Asn 96.fwdarw.Leu; Tyr 100.fwdarw.Asp; Leu
103.fwdarw.Gln; Tyr 106.fwdarw.Glu; Ser 127.fwdarw.Val; Tyr
132.fwdarw.Phe; Lys 134.fwdarw.Trp;
[0137] Gln 28.fwdarw.His; Leu 36.fwdarw.Glu; Ala 40.fwdarw.Leu; Ile
41.fwdarw.Ala; Gln 49.fwdarw.Met; Tyr 52.fwdarw.Met; Ser
68.fwdarw.Glu; Leu 70.fwdarw.Arg; Lys 73.fwdarw.Gln; Asp
77.fwdarw.Lys; Trp 79.fwdarw.Asp; Arg 81.fwdarw.Vla; Cys
87.fwdarw.Ser; Asn 96.fwdarw.Leu; Tyr 100.fwdarw.Asp; Leu
103.fwdarw.Gln; Tyr 106.fwdarw.Glu; Ser 127.fwdarw.Val; Tyr
132.fwdarw.Phe; Lys 134.fwdarw.Trp;
[0138] Gln 28.fwdarw.His; Leu 36.fwdarw.Glu; Ala 40.fwdarw.Leu; Ile
41.fwdarw.Thr; Gln 49.fwdarw.Met; Tyr 52.fwdarw.Met; Ser
68.fwdarw.Glu; Leu 70.fwdarw.Arg; Lys 73.fwdarw.Arg; Asp
77.fwdarw.Lys; Trp 79.fwdarw.Asp; Arg 81.fwdarw.Vla; Cys
87.fwdarw.Ser; Asn 96.fwdarw.Vla; Tyr 100.fwdarw.Asp; Leu
103.fwdarw.Gln; Tyr 106.fwdarw.Glu; Ser 127.fwdarw.Val; Tyr
132.fwdarw.Phe; Lys 134.fwdarw.Trp;
[0139] Gln 28.fwdarw.His; Leu 36.fwdarw.Glu; Ala 40.fwdarw.Leu; Ile
41.fwdarw.Ala; Gln 49.fwdarw.Met; Tyr 52.fwdarw.Met; Ser
68.fwdarw.Glu; Leu 70.fwdarw.Arg; Lys 73.fwdarw.His; Asp
77.fwdarw.Lys; Trp 79.fwdarw.Asp; Arg 81.fwdarw.Vla; Cys
87.fwdarw.Ser; Asn 96.fwdarw.Leu; Tyr 100.fwdarw.Asp; Leu
103.fwdarw.Gln; Tyr 106.fwdarw.Glu; Ser 127.fwdarw.Val; Tyr
132.fwdarw.Phe; Lys 134.fwdarw.Trp;
[0140] Gln 28.fwdarw.His; Leu 36.fwdarw.Glu; Ala 40.fwdarw.Leu; Ile
41.fwdarw.Ala; Gln 49.fwdarw.Lys; Tyr 52.fwdarw.Met; Ser
68.fwdarw.Glu; Leu 70.fwdarw.Arg; Lys 73.fwdarw.Tyr; Asp
77.fwdarw.Gln; Trp 79.fwdarw.Asp; Arg 81.fwdarw.Vla; Cys
87.fwdarw.Ser; Asn 96.fwdarw.-; Tyr 100.fwdarw.Glu; Leu
103.fwdarw.Gln; Tyr 106.fwdarw.Glu; Ser 127.fwdarw.Val; Tyr
132.fwdarw.Phe; Lys 134.fwdarw.Trp;
[0141] Gln 28.fwdarw.His; Leu 36.fwdarw.Glu; Ala 40.fwdarw.Leu; Ile
41.fwdarw.Ala; Leu 42.fwdarw.Arg; Gln 49.fwdarw.Met; Tyr
52.fwdarw.Met; Ser 68.fwdarw.Glu; Leu 70.fwdarw.Arg; Lys
73.fwdarw.His; Asp 77.fwdarw.Lys; Trp 79.fwdarw.Asp; Arg
81.fwdarw.Vla; Cys 87.fwdarw.Ser; Asn 96.fwdarw.Leu; Tyr
100.fwdarw.Asp; Leu 103.fwdarw.Gln; Ser 105.fwdarw.Pro; Tyr
106.fwdarw.Glu; Ser 127.fwdarw.Val; Tyr 132.fwdarw.Phe; Lys
134.fwdarw.Trp;
[0142] Gln 28.fwdarw.His; Leu 36.fwdarw.Glu; Ala 40.fwdarw.Leu; Ile
41.fwdarw.Ala; Asp 47.fwdarw.Asn; Gln 49.fwdarw.Met; Tyr
52.fwdarw.Met; Ser 68.fwdarw.Glu; Leu 70.fwdarw.Arg; Lys
73.fwdarw.His; Asp 77.fwdarw.Lys; Trp 79.fwdarw.Asp; Arg
81.fwdarw.Vla; Cys 87.fwdarw.Ser; Asn 96.fwdarw.Leu; Tyr
100.fwdarw.Asp; Leu 103.fwdarw.Gln; Ser 105.fwdarw.Pro; Tyr
106.fwdarw.Glu; Ser 127.fwdarw.Val; Tyr 132.fwdarw.Phe; Lys
134.fwdarw.Trp; Thr 145.fwdarw.Pro;
[0143] Gln 28.fwdarw.His; Leu 36.fwdarw.Glu; Ala 40.fwdarw.Leu; Ile
41.fwdarw.Ala; Asp 45.fwdarw.Gly; Lys 46.fwdarw.Arg; Gln
49.fwdarw.Met; Tyr 52.fwdarw.Met; Ser 68.fwdarw.Glu; Leu
70.fwdarw.Arg; Lys 73.fwdarw.His; Asp 77.fwdarw.Lys; Trp
79.fwdarw.Asp; Arg 81.fwdarw.Vla; Cys 87.fwdarw.Ser; Asn
96.fwdarw.Leu; Tyr 100.fwdarw.Asp; Leu 103.fwdarw.Gln; Ser
105.fwdarw.Pro; Tyr 106.fwdarw.Glu; Ser 127.fwdarw.Val; Tyr
132.fwdarw.Phe; Lys 134.fwdarw.Trp;
[0144] Gln 28.fwdarw.His; Leu 36.fwdarw.Glu; Ala 40.fwdarw.Leu; Ile
41.fwdarw.Ala; Leu 42.fwdarw.Arg; Gln 49.fwdarw.Met; Tyr
52.fwdarw.Met; Asn 65.fwdarw.Asp; Ser 68.fwdarw.Glu; Leu
70.fwdarw.Arg; Lys 73.fwdarw.His; Asp 77.fwdarw.Lys; Trp
79.fwdarw.Asp; Arg 81.fwdarw.Vla; Cys 87.fwdarw.Ser; Asn
96.fwdarw.Leu; Tyr 100.fwdarw.Asp; Leu 103.fwdarw.Gln; Ser
105.fwdarw.Pro; Tyr 106.fwdarw.Glu; Ser 127.fwdarw.Val; Tyr
132.fwdarw.Phe; Lys 134.fwdarw.Trp;
[0145] Gln 28.fwdarw.His; Leu 36.fwdarw.Glu; Ala 40.fwdarw.Leu; Ile
41.fwdarw.Ala; Asp 47.fwdarw.Asn; Gln 49.fwdarw.Met; Tyr
52.fwdarw.Met; Asn 65.fwdarw.Asp; Ser 68.fwdarw.Glu; Leu
70.fwdarw.Arg; Lys 73.fwdarw.His; Asp 77.fwdarw.Lys; Trp
79.fwdarw.Asp; Arg 81.fwdarw.Vla; Cys 87.fwdarw.Ser; Asn
96.fwdarw.Leu; Tyr 100.fwdarw.Asp; Leu 103.fwdarw.Gln; Ser
105.fwdarw.Pro; Tyr 106.fwdarw.Glu; Ser 127.fwdarw.Val; Tyr
132.fwdarw.Phe; Lys 134.fwdarw.Trp; Thr 145.fwdarw.Pro;
[0146] Gln 28.fwdarw.His; Leu 36.fwdarw.Glu; Ala 40.fwdarw.Leu; Ile
41.fwdarw.Ala; Asp 45.fwdarw.Gly; Lys 46.fwdarw.Arg; Gln
49.fwdarw.Met; Tyr 52.fwdarw.Met; Asn 65.fwdarw.Asp; Ser
68.fwdarw.Glu; Leu 70.fwdarw.Arg; Lys 73.fwdarw.His; Asp
77.fwdarw.Lys; Trp 79.fwdarw.Asp; Arg 81.fwdarw.Vla; Cys
87.fwdarw.Ser; Asn 96.fwdarw.Leu; Tyr 100.fwdarw.Asp; Leu
103.fwdarw.Gln; Ser 105.fwdarw.Pro; Tyr 106.fwdarw.Glu; Ser
127.fwdarw.Val; Tyr 132.fwdarw.Phe; Lys 134.fwdarw.Trp; or
[0147] Leu 36.fwdarw.Glu; Ala 40.fwdarw.Leu; Ile 41.fwdarw.Ala; Leu
42.fwdarw.Arg; Gln 49.fwdarw.Met; Tyr 52.fwdarw.Met; Asn
65.fwdarw.Asp; Ser 68.fwdarw.Glu; Leu 70.fwdarw.Arg; Lys
73.fwdarw.His; Asp 77.fwdarw.Lys; Trp 79.fwdarw.Asp; Arg
81.fwdarw.Vla; Cys 87.fwdarw.Ser; Asn 96.fwdarw.Leu; Tyr
100.fwdarw.Asp; Leu 103.fwdarw.Gln; Ser 105.fwdarw.Pro; Tyr
106.fwdarw.Glu; Ser 127.fwdarw.Val; Tyr 132.fwdarw.Phe; Lys
134.fwdarw.Trp.
[0148] In the residual region, i.e. the region differing from
sequence positions 28, 36, 40-42, 45-47, 49, 52, 65, 68, 70, 72-73,
77, 79, 81, 87, 96, 100, 103, 105-106, 125, 127, 132, 134 and 145,
an hNGAL mutein of the disclosure may include the wild type
(natural) amino acid sequence outside the mutated amino acid
sequence positions.
[0149] In further particular embodiments, a mutein according to the
current disclosure comprises an amino acid sequence selected from
the group consisting of SEQ ID NOs: 38-53 or a fragment or variant
thereof.
[0150] The amino acid sequence of a Pvd-type-III-binding hNGAL
mutein of the disclosure may have a high sequence identity, such as
at least 70%, at least 75%, at least 80%, at least 82%, at least
85%, at least 87%, at least 90% identity, including at least 95%
identity, to a sequence selected from the group consisting of SEQ
ID NOs: 38-53.
[0151] The disclosure also includes structural homologues of an
hNGAL mutein having an amino acid sequence selected from the group
consisting of SEQ ID NOs: 38-53, which structural homologues have
an amino acid sequence homology or sequence identity of more than
about 60%, preferably more than 65%, more than 70%, more than 75%,
more than 80%, more than 85%, more than 90%, more than 92% and most
preferably more than 95% in relation to said hNGAL mutein.
[0152] A Pvd-type-III-binding hNGAL mutein according to the present
disclosure can be obtained by means of mutagenesis of a naturally
occurring form of human lipocalin 2. In some embodiments of the
mutagenesis, a substitution (or replacement) is a conservative
substitution. Nevertheless, any substitution--including
non-conservative substitution or one or more from the exemplary
substitutions below--is envisaged as long as the mutein retains its
capability to bind to Pvd type I, and/or it has an identity to the
then substituted sequence in that it is at least 60%, such as at
least 65%, at least 70%, at least 75%, at least 80%, at least 85%
or higher identity to the amino acid sequence of the mature human
lipocalin 2 (SWISS-PROT Data Bank Accession Number P80188).
Applications of Muteins Specific for Pyoverdine
[0153] Pyoverdines are the main siderophores of pseudomonads such
as P. aeruginosa. In vitro experiments indicated a potential role
of the P. aeruginosa pyoverdine in iron release from
ferritransferrin but the ability of pyoverdine to compete for iron
in vivo has only recently been demonstrated (Meyer et al., 1996,
Infection and Immunity, 64, p. 518-523). It was observed using a
burned-mouse model that the absence of pyoverdine production in
mutants raised from a virulent parental strain correlated with a
loss of virulence of these mutants and that virulence was restored
when the homologous pyoverdine originating from the wild-type
strain was supplemented. Furthermore, supplementation with a
heterologous pyoverdine did not restore the virulence of the latter
mutants. Thus, a precise knowledge of the pyoverdine-mediated iron
uptake system used by a given P. aeruginosa isolate during
infection appears a prerequisite for developing new ways of
treatment of P. aeruginosa infections via bacterial iron
metabolism, e.g., by blocking the pyoverdine biosynthesis or the
pyoverdine-mediated iron transport.
[0154] Numerous possible applications for the pyoverdine-binding
muteins of the disclosure, therefore, exist in medicine. In one
further aspect, the disclosure relates to the use of a
pyoverdine-binding mutein disclosed herein for detecting pyoverdine
(type I, II or III) in a sample as well as a respective method of
diagnosis.
[0155] The present disclosure also involves the use of one or more
pyoverdine-binding muteins as described for complex formation with
pyoverdine (type I, II or III).
[0156] Therefore, in another aspect of the disclosure, the
disclosed muteins are used for the detection of pyoverdine (type I,
II or III). Such use may include the steps of contacting one or
more said muteins, under suitable conditions, with a sample
suspected of containing pyoverdine, thereby allowing formation of a
complex between the muteins and pyoverdine (type I, II or III), and
detecting the complex by a suitable signal.
[0157] The detectable signal can be caused by a label, as explained
above, or by a change of physical properties due to the binding,
i.e. the complex formation, itself. One example is surface plasmon
resonance, the value of which is changed during binding of binding
partners from which one is immobilized on a surface such as a gold
foil.
[0158] The pyoverdine-binding muteins disclosed herein may also be
used for the separation of pyoverdine (type I, II or III). Such use
may include the steps of contacting one or more said muteins, under
suitable conditions, with a sample supposed to contain pyoverdine
(type I, II and/or III), thereby allowing formation of a complex
between the muteins and pyoverdine (type I, II or III), and
separating the complex from the sample. In the use of the disclosed
muteins for the detection of pyoverdine as well as the separation
of pyoverdine (type I, II or III), the muteins and/or pyoverdine or
a domain or fragment thereof may be immobilized on a suitable solid
phase.
[0159] In still another aspect, the present disclosure features a
diagnostic or analytical kit comprising a pyoverdine-binding mutein
according to the disclosure.
[0160] In addition to their use in diagnostics, in yet another
aspect, the disclosure encompasses the use of a pyoverdine-binding
mutein of the disclosure or a composition comprising such mutein
for the binding of pyoverdine (type I, II or III) in a subject
and/or inhibiting or lessening growth of P. aeruginosa in a
subject.
[0161] In still another aspect, the present disclosure features a
method of binding pyoverdine (type I, II or III) in a subject,
comprising administering to said subject an effective amount of one
or more pyoverdine-binding muteins of the disclosure or of one or
more compositions comprising such muteins.
[0162] In still another aspect, the present disclosure involves a
method for inhibiting or lessening growth of P. aeruginosa in a
subject, comprising administering to said subject an effective
amount of one or more pyoverdine-binding muteins of the disclosure
or of one or more compositions comprising such muteins.
Muteins Specific for Pyochelin
[0163] In addition, the present disclosure fulfills the need for
alternative inhibitors of pyochelin by providing hNGAL muteins that
bind pyochelin and useful applications therefor.
[0164] Accordingly, the disclosure also provides methods of making
and using the pyochelin-binding muteins described herein as well as
compositions that may be used in methods of detecting pyochelin in
a sample or in methods of binding of pyochelin in a subject. No
such hNGAL muteins having these features attendant to the uses
provided by present disclosure have been previously described.
Exemplary Muteins Specific for Pyochelin
[0165] In one aspect, the present disclosure relates to an hNGAL
mutein that binds pyochelin complexed with iron with a K.sub.D of
about 20 nM or lower, such as 1 nM or lower, for example, when
measured by Biacore T200 instrument in an assay essentially
described in Example 6.
[0166] In some still further embodiments, one or more hNGAL muteins
of this disclosure are capable of binding pyochelin with complexed
iron, with an affinity measured by an IC50 value of about 500 nM or
lower, for example, when measured in an ELISA assay essentially
described in Example 5.
[0167] In some still further embodiments, one or more hNGAL muteins
of this disclosure are capable of binding pyochelin without
complexed iron, with an affinity measured by an IC50 value of about
200 nM or lower, for example, when measured in an ELISA assay
essentially described in Example 5.
[0168] In some still further embodiments, one or more hNGAL muteins
of this disclosure are capable of binding pyochelin with and
without complexed iron, with an affinity measured by an IC50 value
of about 200 nM or lower, for example, when measured in an ELISA
assay essentially described in Example 5.
[0169] In some embodiments, the mutein is capable of inhibiting
iron uptake mediated by pyochelin with an IC50 value of about 150
nM or lower in a competition ELISA format essentially described in
Example 7.
[0170] In some embodiments, the mutein is capable of inhibiting
bacterial growth of Pvd I knock-out (.DELTA.pvdA) in an assay
essentially described in Example 8.
[0171] In this regard, the disclosure relates to a polypeptide,
wherein said polypeptide includes an hNGAL mutein, and said hNGAL
in comparison with the linear polypeptide sequence of the mature
hNGAL, comprises at least 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
13, 14, 15, 16, 17, 18, 19, 20, 21, or even more, mutated amino
acid residues at the sequence positions 28, 34, 36, 40-41, 44-46,
49, 52, 54, 65, 68, 70, 72-74, 77, 79-81, 87, 96, 100, 103, 106,
108, 123, 125, 127, 132, 134 and 141, and wherein said polypeptide
binds pyochelin.
[0172] In some embodiments, a pyochelin-binding hNGAL mutein of the
disclosure includes, at any one or more of the sequence positions
36, 40-41, 49, 52, 68, 70, 72-73, 77, 79, 81, 87, 96, 100, 103,
106, 125, 127, 132 and 134 of the linear polypeptide sequence of
the mature hNGAL (SEQ ID NO: 1), one or more of the following
mutated amino acid residues: Leu 36.fwdarw.His, Met or Val; Ala
40.fwdarw.Ile, Gln, Tyr or Phe; Ile 41.fwdarw.Leu, His or Trp; Gln
49.fwdarw.His, Arg, Ser or Ala; Tyr 52.fwdarw.Leu, Trp or Pro; Ser
68.fwdarw.Asp or His; Leu 70.fwdarw.Arg or Trp; Arg 72.fwdarw.His,
Ile, Ala, Ser or Gly; Lys 73.fwdarw.Asn, Met, Pro, Phe, Gln or Arg;
Asp 77.fwdarw.Arg, Thr, Pro or Asp; Trp 79.fwdarw.Ala, Arg, Lys or
Asp; Arg 81.fwdarw.Thr, Ile or Trp; Asn 96.fwdarw.Met, Asn, Pro or
Ala; Tyr 100.fwdarw.Gly, His or Glu; Leu 103.fwdarw.Gly, Met, His
or Gln; Tyr 106.fwdarw.Met, Gly, Arg or Trp; Lys 125.fwdarw.Trp,
Phe, Gly or Leu; Ser 127.fwdarw.Arg, Trp, Asp or Ile; Tyr
132.fwdarw.Ala, Glu or Thr; and Lys 134.fwdarw.Leu, Val, Asn or
Phe. In some embodiments, an hNGAL mutein of the disclosure
includes two or more, such as 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, or
even more or all mutated amino acid residues at these sequence
positions of the mature hNGAL.
[0173] Additionally, a pyochelin-binding hNGAL mutein according to
the disclosure may also comprise the following substitution in
comparison with the linear polypeptide sequence of the mature
hNGAL: Gln 28.fwdarw.His; Val 34.fwdarw.Leu; Glu 44.fwdarw.Gly; Asp
45.fwdarw.Gly; Lys.fwdarw.Arg or Tyr; Asn 65.fwdarw.Asp; Ile
80.fwdarw.Thr; Cys 87.fwdarw.Ser; Leu 94.fwdarw.Phe; Val
108.fwdarw.Ala; Phe 123.fwdarw.Ser and Thr 141.fwdarw.Ala.
[0174] In some additional embodiments, an hNGAL mutein of the
disclosure, which binds to pyochelin, includes the following amino
acid replacements in comparison with the linear polypeptide
sequence of the mature hNGAL:
[0175] Gln 28.fwdarw.His; Ala 40.fwdarw.Ile; Ile 41.fwdarw.Leu; Gln
49.fwdarw.His; Tyr 52.fwdarw.Leu; Ser 68.fwdarw.His; Leu
70.fwdarw.Thr; Arg 72.fwdarw.Lys; Lys 73.fwdarw.Trp; Asp
77.fwdarw.Ile; Trp 79.fwdarw.Ser; Arg 81.fwdarw.His; Cys
87.fwdarw.Ser; Asn 96.fwdarw.Met; Tyr 100.fwdarw.Asn; Leu
103.fwdarw.His; Tyr 106.fwdarw.Met; Lys 125.fwdarw.Trp; Ser
127.fwdarw.Asp; Tyr 132.fwdarw.Glu; Lys 134.fwdarw.Leu;
[0176] Gln 28.fwdarw.His; Leu 36.fwdarw.His; Ala 40.fwdarw.Gln; Ile
41.fwdarw.Trp; Gln 49.fwdarw.Arg; Tyr 52.fwdarw.Trp; Ser
68.fwdarw.Asp; Leu 70.fwdarw.Asp; Arg 72.fwdarw.Ala; Lys
73.fwdarw.Ile; Asp 77.fwdarw.His; Trp 79.fwdarw.Arg; Arg
81.fwdarw.Thr; Cys 87.fwdarw.Ser; Tyr 100.fwdarw.His; Leu
103.fwdarw.Gly; Tyr 106.fwdarw.Gly; Lys 125.fwdarw.Phe; Ser
127.fwdarw.Ile; Tyr 132.fwdarw.Ala; Lys 134.fwdarw.Phe;
[0177] Gln 28.fwdarw.His; Leu 36.fwdarw.Met; Ala 40.fwdarw.Phe; Ile
41.fwdarw.His; Gln 49.fwdarw.Ser; Tyr 52.fwdarw.Pro; Ser
68.fwdarw.His; Leu 70.fwdarw.Pro; Arg 72.fwdarw.Trp; Lys
73.fwdarw.Ala; Asp 77.fwdarw.Ala; Trp 79.fwdarw.Lys; Arg
81.fwdarw.Ile; Cys 87.fwdarw.Ser; Asn 96.fwdarw.Ala; Tyr
100.fwdarw.Gly; Leu 103.fwdarw.Met; Tyr 106.fwdarw.Trp; Lys
125.fwdarw.Gly; Ser 127.fwdarw.Trp; Tyr 132.fwdarw.Thru; Lys
134.fwdarw.Val;
[0178] Gln 28.fwdarw.His; Leu 36.fwdarw.Val; Ala 40.fwdarw.Tyr; Ile
41.fwdarw.Trp; Gln 49.fwdarw.Ala; Ser 68.fwdarw.Asp; Leu
70.fwdarw.Arg; Arg 72.fwdarw.Trp; Lys 73.fwdarw.Arg; Asp
77.fwdarw.Arg; Trp 79.fwdarw.Asp; Arg 81.fwdarw.Trp; Cys
87.fwdarw.Ser; Asn 96.fwdarw.Pro; Tyr 100.fwdarw.Glu; Leu
103.fwdarw.Gln; Tyr 106.fwdarw.Arg; Lys 125.fwdarw.Leu; Ser
127.fwdarw.Arg; Tyr 132.fwdarw.Ala; Lys 134.fwdarw.Asn;
[0179] Gln 28.fwdarw.His; Vla 34.fwdarw.Leu; Leu 36.fwdarw.Met; Ala
40.fwdarw.Phe; Ile 41.fwdarw.His; Gln 49.fwdarw.Ser; Tyr
52.fwdarw.Pro; Ser 68.fwdarw.His; Leu 70.fwdarw.Pro; Arg
72.fwdarw.Trp; Lys 73.fwdarw.Ala; Asp 77.fwdarw.Ala; Trp
79.fwdarw.Lys; Ile 80.fwdarw.Thr; Arg 81.fwdarw.Ile; Cys
87.fwdarw.Ser; Asn 96.fwdarw.Ala; Tyr 100.fwdarw.Gly; Leu
103.fwdarw.Met; Tyr 106.fwdarw.Trp; Phe 123.fwdarw.Ser; Lys
125.fwdarw.Gly; Ser 127.fwdarw.Trp; Tyr 132.fwdarw.Thru; Lys
134.fwdarw.Val; Thr 141.fwdarw.Ala;
[0180] Gln 28.fwdarw.His; Leu 36.fwdarw.Met; Ala 40.fwdarw.Phe; Ile
41.fwdarw.His; Gln 49.fwdarw.Ser; Tyr 52.fwdarw.Pro; Ser
68.fwdarw.His; Leu 70.fwdarw.Pro; Arg 72.fwdarw.Trp; Lys
73.fwdarw.Ala; Asp 77.fwdarw.Ala; Trp 79.fwdarw.Lys; lie
80.fwdarw.Thr; Arg 81.fwdarw.Ile; Cys 87.fwdarw.Ser; Asn
96.fwdarw.Ala; Tyr 100.fwdarw.Gly; Leu 103.fwdarw.Met; Tyr
106.fwdarw.Trp; Phe 123.fwdarw.Ser; Lys 125.fwdarw.Gly; Ser
127.fwdarw.Trp; Tyr 132.fwdarw.Thru; Lys 134.fwdarw.Val;
[0181] Gln 28.fwdarw.His; Leu 36.fwdarw.His; Ala 40.fwdarw.Gln; Ile
41.fwdarw.Trp; Asp 45.fwdarw.Gly; Lys 46.fwdarw.Arg; Gln
49.fwdarw.Arg; Tyr 52.fwdarw.Trp; Ser 68.fwdarw.Asp; Leu
70.fwdarw.Asp; Arg 72.fwdarw.Ala; Lys 73.fwdarw.Ile; Asp
77.fwdarw.Leu; Trp 79.fwdarw.Arg; Arg 81.fwdarw.Thr; Cys
87.fwdarw., Ser; Tyr 100.fwdarw.His; Leu 103.fwdarw.Gly; Tyr
106.fwdarw.Gly; Lys 125.fwdarw.Phe; Ser 127.fwdarw.Ile; Tyr
132.fwdarw.Ala; Lys 134.fwdarw.Phe;
[0182] Gln 28.fwdarw.His; Leu 36.fwdarw.His; Ala 40.fwdarw.Gln; Ile
41.fwdarw.Trp; Glu 44.fwdarw.Gly; Lys 46.fwdarw.Tyr; Gln
49.fwdarw.Arg; Tyr 52.fwdarw.Trp; Ser 68.fwdarw.Asp; Leu
70.fwdarw.Asp; Arg 72.fwdarw.Ala; Lys 73.fwdarw.lie: Lys
74.fwdarw.Glu; Asp 77.fwdarw.His; Trp 79.fwdarw.Arg; Arg
81.fwdarw.Thr; Cys 87.fwdarw.Ser; Leu 94.fwdarw.Phe; Tyr
100.fwdarw.His; Leu 103.fwdarw.Gly; Tyr 106.fwdarw.Gly; Val
108.fwdarw.Ala; Lys 125.fwdarw.Phe; Ser 127.fwdarw.Ile; Tyr
132.fwdarw.Ala; Lys 134.fwdarw.Phe; or
[0183] Leu 36.fwdarw.His; Ala 40.fwdarw.Gln; Ile 41.fwdarw.Trp; Asp
45.fwdarw.Gly; Lys 46.fwdarw.Arg; Gln 49.fwdarw.Arg; Tyr
52.fwdarw.Trp; Asn 65.fwdarw.Asp; Ser 68.fwdarw.Asp; Leu
70.fwdarw.Asp; Arg 72.fwdarw.Ala; Lys 73.fwdarw.Ile; Asp
77.fwdarw.Leu; Trp 79.fwdarw.Arg; Arg 81.fwdarw.Thr; Cys
87.fwdarw.Ser; Tyr 100.fwdarw.His; Leu 103.fwdarw.Gly; Tyr
106.fwdarw.Gly; Lys 125.fwdarw.Phe; Ser 127.fwdarw.Ile; Tyr
132.fwdarw.Ala; Lys 134.fwdarw.Phe.
[0184] In the residual region, i.e. the region differing from
sequence positions 28, 34, 36, 40-41, 44-46, 49, 52, 54, 65, 68,
70, 72-74, 77, 79-81, 87, 96, 100, 103, 106, 108, 123, 125, 127,
132, 134 and 141, an hNGAL mutein of the disclosure may include the
wild type (natural) amino acid sequence outside the mutated amino
acid sequence positions.
[0185] In further particular embodiments, a mutein according to the
current disclosure comprises an amino acid sequence selected from
the group consisting of SEQ ID NOs: 54-63 or a fragment or variant
thereof.
[0186] The amino acid sequence of a pyochelin-binding hNGAL mutein
of the disclosure may have a high sequence identity, such as at
least 70%, at least 75%, at least 80%, at least 82%, at least 85%,
at least 87%, at least 90% identity, including at least 95%
identity, to a sequence selected from the group consisting of SEQ
ID NOs: 54-63.
[0187] The disclosure also includes structural homologues of an
hNGAL mutein having an amino acid sequence selected from the group
consisting of SEQ ID NOs: 54-63, which structural homologues have
an amino acid sequence homology or sequence identity of more than
about 60%, preferably more than 65%, more than 70%, more than 75%,
more than 80%, more than 85%, more than 90%, more than 92% and most
preferably more than 95% in relation to said hNGAL mutein.
[0188] A pyochelin-binding hNGAL mutein according to the present
disclosure can be obtained by means of mutagenesis of a naturally
occurring form of human lipocalin 2. In some embodiments of the
mutagenesis, a substitution (or replacement) is a conservative
substitution. Nevertheless, any substitution--including
non-conservative substitution or one or more from the exemplary
substitutions below--is envisaged as long as the mutein retains its
capability to bind to Pvd type I, and/or it has an identity to the
then substituted sequence in that it is at least 60%, such as at
least 65%, at least 70%, at least 75%, at least 80%, at least 85%
or higher identity to the amino acid sequence of the mature human
lipocalin 2 (SWISS-PROT Data Bank Accession Number P80188).
2. Applications of Muteins Specific for Pyochelin
[0189] Pyochelin (Pch) is one of the two major siderophores
produced and secreted by Pseudomonas aeruginosa to assimilate iron.
It chelates iron in the extracellular medium and transports it into
the cell via a specific outer membrane transporter, FptA. Pch
strongly chelates divalent metals such as Zn(II) (pZn=11.8 at p[H]
7.4) and Cu(II) (pCu=14.9 at p[H] 7.4) and forms predominantly 1:2
(M.sup.2+/Pch) complexes. Siderophores are not only devoted to
iron(III) shuttling but most likely display other specific
biological roles in the subtle metals homeostasis in
microorganisms.
[0190] Numerous possible applications for the muteins with
binding-affinity for pyochelin of the disclosure, therefore, exist
in medicine. In one further aspect, the disclosure relates to the
use of such a mutein disclosed herein for detecting pyochelin in a
sample as well as a respective method of diagnosis.
[0191] The present disclosure also involves the use of one or more
muteins with binding-affinity for pyochelin as described for
complex formation with pyochelin.
[0192] Therefore, in another aspect of the disclosure, the
disclosed muteins are used for the detection of pyochelin. Such use
may include the steps of contacting one or more said muteins, under
suitable conditions, with a sample suspected of containing
pyochelin, thereby allowing formation of a complex between the
muteins and pyochelin, and detecting the complex by a suitable
signal.
[0193] The detectable signal can be caused by a label, as explained
above, or by a change of physical properties due to the binding,
i.e. the complex formation, itself. One example is surface plasmon
resonance, the value of which is changed during binding of binding
partners from which one is immobilized on a surface such as a gold
foil.
[0194] The muteins disclosed herein may also be used for the
separation of pyochelin. Such use may include the steps of
contacting one or more said muteins, under suitable conditions,
with a sample supposed to contain pyochelin, thereby allowing
formation of a complex between the muteins and pyochelin, and
separating the complex from the sample.
[0195] In the use of the disclosed muteins for the detection of
pyochelin as well as the separation of pyochelin, the muteins
and/or pyochelin or a domain or fragment thereof may be immobilized
on a suitable solid phase.
[0196] Accordingly, the presence or absence of a molecule such as
pyochelin, e.g., in a sample, as well as its concentration or level
may be determined.
[0197] In still another aspect, the present disclosure features a
diagnostic or analytical kit comprising a mutein with
binding-affinity for pyochelin according to the disclosure.
[0198] In addition to their use in diagnostics, in yet another
aspect, the disclosure encompasses the use of such a mutein of the
disclosure or a composition comprising such mutein for the binding
of pyochelin in a subject and/or inhibiting or lessening growth of
P. aeruginosa in a subject.
[0199] In still another aspect, the present disclosure features a
method of binding pyochelin in a subject, comprising administering
to said subject an effective amount of one or more muteins with
binding-affinity for pyochelin of the disclosure or of one or more
compositions comprising such a mutein.
[0200] In still another aspect, the present disclosure involves a
method for inhibiting or lessening growth of P. aeruginosa in a
subject, comprising administering to said subject an effective
amount of one or more muteins with binding-affinity for pyochelin
of the disclosure or of one or more compositions comprising such a
mutein.
C. Compositions Comprising Pyoverdine-Binding Mutein and/or
Pyochelin-Binding Mutein and Combination of the Muteins
[0201] P. aeruginosa is a species of bacterium that is widely
distributed in the environment and is capable of causing very
severe infections in patients with predisposing conditions, such as
cystic fibrosis. P. aeruginosa synthesizes two major siderophores,
pyoverdine (Pvd) and pyochelin (Pch), to cover its needs in
iron(III). The biofilm mode of growth is believed to be critical
for persistent P. aeruginosa infections (Costerton et al., 1999;
Singh et al., 2000) and the dual expression of Pvd and Pch genes is
necessary for normal biofilm development (Banin et al., 2005).
[0202] Given that P. aeruginosa produces an impressive array of
virulence factors, all playing a role in its pathogenicity, a
preferred strategy to efficiently inhibit P. aeruginosa virulence
is to target several virulence factors.
[0203] To this aim, the present disclosure encompasses use of (i) a
first mutein or polypeptide thereof specific for pyoverdine type I,
(ii) a second mutein or polypeptide thereof specific for pyoverdine
type II, (iii) a third mutein or polypeptide thereof specific for
pyoverdine type III and/or (iv) a fourth mutein or polypeptide
thereof specific for pyochelin for the binding of pyoverdine type
I, II, III and/or pyochelin in a subject. Such use includes a step
of administering to a subject an effective amount of (i) a first
mutein or polypeptide thereof specific for pyoverdine type I, (ii)
a second mutein or polypeptide thereof specific for pyoverdine type
II, (iii) a third mutein or polypeptide thereof specific for
pyoverdine type III and/or (iv) a fourth mutein or polypeptide
thereof specific for pyochelin. The present disclosure also
contemplates the use of (i) a first mutein or polypeptide thereof
specific for pyoverdine type I, (ii) a second mutein or polypeptide
thereof specific for pyoverdine type II, (iii) a third mutein or
polypeptide thereof specific for pyoverdine type III and/or (iv) a
fourth mutein or polypeptide thereof specific for pyochelin for
preventing or reducing iron-uptake by P. aeruginosa through
pyochelin and/or pyoverdine in a subject. Similarly, the present
disclosure discloses the use of (i) a first mutein or polypeptide
thereof specific for pyoverdine type I, (ii) a second mutein or
polypeptide thereof specific for pyoverdine type II, (iii) a third
mutein or polypeptide thereof specific for pyoverdine type III
and/or (iv) a fourth mutein or polypeptide thereof specific for
pyochelin for the treatment or alleviation of P. aeruginosa
infection and/or biofilm formation in a subject. In some further
embodiments, the P. aeruginosa infection can be acute or chronic
infections.
[0204] The first, second, third and/or fourth muteins or
polypeptides thereof may be administered in combination, including
concurrently, concomitantly or in series. In some embodiments, the
first, second, third and/or fourth muteins or polypeptides thereof
may be included in a composition that may be administered. The
composition may include an effective amount of the first, second,
third and/or fourth muteins or polypeptides thereof as active
ingredients, in association with at least one pharmaceutically
acceptable adjuvant, diluent or carrier. The first, second, third
and/or fourth muteins or polypeptides thereof may also be
administered independent from each other, including at individual
intervals at independent points of time.
[0205] In some embodiments, the mutein specific for pyoverdine
(type I, II or III) as used in the disclosure is able to bind
pyoverdine (type I, II or III, respectively) with detectable
affinity, i.e. with a dissociation constant of at least 200 nM,
including about 100 nM, about 50 nM, about 25 nM or about 15 nM. In
some embodiments, the mutein specific for pyochelin as used in the
disclosure is able to bind pyochelin with detectable affinity, i.e.
with a dissociation constant of at least 200 nM including about 100
nM, about 50 nM, about 25 nM or about 15 nM. In some further
preferred embodiments, a mutein of the combination according to the
disclosure binds pyoverdine (type I, II or III) or pyochelin,
respectively, with a dissociation constant for pyoverdine (type I,
II or III, respectively) or pyochelin of at least about 10 nM,
about 1 nM, about 0.1 nM, about 10 pM, or even lower. The present
disclosure, thus, provides a combination of (i) a mutein of hNGAL
that has a detectable affinity to pyoverdine type I (Pvd I s, sa,
aKG+/-Fe), (ii) a mutein of hNGAL that has a detectable affinity to
pyoverdine type II (Pvd II s, sa, aKG+/-Fe), (iii) a mutein of
hNGAL that has a detectable affinity to pyoverdine type III (Pvd
III s, sa, aKG+/-Fe) and/or (iv) a mutein of hNGAL that has a
detectable affinity to pyochelin (Pch+/-Fe).
[0206] Further details on hNGAL muteins with a detectable affinity
for pyoverdine can be found in Section A of the current
disclosure.
[0207] In a particularly preferred embodiment, a mutein that is
specific for pyoverdine type I is shown in any one of SEQ ID NOs:
2-18. In a particularly preferred embodiment, a mutein that is
specific for pyoverdine type II is shown in any one of SEQ ID NOs:
19-37. In a particularly preferred embodiment, a mutein that is
specific for pyoverdine type III is shown in any one of SEQ ID NOs:
38-53.
[0208] Further details of hNGAL muteins with a detectable affinity
for pyochelin have been disclosed in Section B of the current
disclosure.
[0209] In a particular preferred embodiment, the mutein that is
specific for pyochelin is shown in any one of SEQ ID NOs:
54-63.
[0210] The present disclosure also relates to a composition
comprising at least one of the following: (i) a first mutein or
polypeptide thereof specific for pyoverdine type I, (ii) a second
mutein or polypeptide thereof specific for pyoverdine type II,
(iii) a third mutein or polypeptide thereof specific for pyoverdine
type III and (iv) a fourth mutein or polypeptide thereof specific
for pyochelin, which composition can be used in a method of binding
of pyoverdine type I, II, III and/or pyochelin.
[0211] The present disclosure relates to a combination of a first
mutein or polypeptide or composition thereof, a second mutein or
polypeptide or composition thereof, a third mutein or polypeptide
or composition thereof, and/or a fourth mutein or polypeptide or
composition thereof. One of these muteins can bind to pyoverdine
(type I, II or III) as a given non-natural target with detectable
affinity. One of these muteins can bind to pyochelin as a given
non-natural target with detectable affinity. The respective mutein
thus binds to pyoverdine type I, II, III or pyochelin,
respectively, as a given non-natural target. The term "non-natural
target" refers to a compound, which does not bind to the
corresponding lipocalin (the wild-type hNGAL) under physiological
conditions. For example, the first mutein or polypeptide or
composition thereof can bind to one type of pyoverdine (type I, II
or III) or pyochelin and the second, the third or the fourth mutein
or polypeptide or composition thereof can bind to pyochelin or an
another type of pyoverdine respectively, or vice versa. The
combination of the first, the second, the third and/or the fourth
muteins or polypeptides or compositions thereof may be provided in
various forms and orientations.
[0212] In still another aspect, the present disclosure features a
method of binding pyoverdine type I, II, III and/or pyochelin in a
subject comprising administering to said subject an effective
amount of a composition that comprises at least one of the
following: (i) a mutein or polypeptide thereof specific for
pyoverdine type I, (ii) a mutein or polypeptide thereof specific
for pyoverdine type II, (iii) a mutein or polypeptide thereof
specific for pyoverdine type III and (iv) a mutein or polypeptide
thereof specific for pyochelin. In some embodiments, such
composition comprises two or more of, e.g. three or even all of
(i)-(iv).
[0213] In still another aspect, the present disclosure involves a
method for inhibiting or lessening growth of P. aeruginosa in a
subject comprising administering to said subject an effective
amount of a composition that comprises at least one of the
following: (i) a mutein or polypeptide thereof specific for
pyoverdine type I. (ii) a mutein or polypeptide thereof specific
for pyoverdine type II, (iii) a mutein or polypeptide thereof
specific for pyoverdine type III and (iv) a mutein or polypeptide
thereof specific for pyochelin. In some embodiments, such
composition comprises two or more of, e.g. three or even all of
(i)-(iv).
[0214] The present disclosure also involves the use of (i) a first
mutein or polypeptide thereof specific for pyoverdine type I, (ii)
a second mutein or polypeptide thereof specific for pyoverdine type
II, (iii) a third mutein or polypeptide thereof specific for
pyoverdine type III, and/or (iv) a fourth mutein or polypeptide
thereof specific for pyochelin, for complex formation with
pyoverdine type I, II, III and/or pyochelin.
[0215] Therefore, in another aspect of the disclosure, the
disclosed muteins or polypeptides can be used for the detection of
pyoverdine and pyochelin. Such use may include the steps of
contacting one or more said muteins or polypeptides, under suitable
conditions, with a sample suspected of containing pyoverdine and/or
pyochelin, thereby allowing formation of a complex between the
muteins or polypeptides and pyoverdine and/or between the muteins
and pyochelin, respectively, and detecting the complex by a
suitable signal.
[0216] The detectable signal can be caused by a label, as explained
above, or by a change of physical properties due to the binding,
i.e. the complex formation, itself. One example is surface plasmon
resonance, the value of which is changed during binding of binding
partners from which one is immobilized on a surface such as a gold
foil.
[0217] The muteins or polypeptides disclosed herein may also be
used for the separation of pyoverdine and/or pyochelin. Such use
may include the steps of contacting one or more said muteins, under
suitable conditions, with a sample supposed to contain pyoverdine
and/or pyochelin, thereby allowing formation of a complex between
the muteins and pyoverdine and/or between the muteins and
pyochelin, respectively, and separating the complex from the
sample.
[0218] In the use of the disclosed muteins or polypeptides for the
detection of pyoverdine and/or pyochelin as well as the separation
of pyoverdine and/or pyochelin, the muteins and/or pyoverdine and
pyochelin or a domain or fragment thereof may be immobilized on a
suitable solid phase.
[0219] Accordingly, the presence or absence of pyoverdine and/or
pyochelin, e.g., in a sample, as well as its concentration or level
may be determined.
[0220] In another aspect, the disclosure provides for a kit of
parts. The kit includes, in one or more containers, separately or
in a mixture, a mutein or polypeptide specific for pyoverdine type
I or composition thereof, a mutein or polypeptide specific for
pyoverdine type II or composition thereof, a mutein or polypeptide
specific for pyoverdine type III or composition thereof, and/or a
mutein or polypeptide specific for pyochelin or composition
thereof. In some further preferred embodiments, the kit comprises a
first container that includes a first mutein or polypeptide
specific for pyoverdine type I or composition thereof, a second
container that includes a second mutein or polypeptide specific for
pyoverdine type II or composition thereof, a third container that
includes a third mutein or polypeptide specific for pyoverdine type
III or composition thereof, and/or a fourth container that includes
a fourth mutein or polypeptide specific for pyochelin or
composition thereof. In some embodiments the kit further includes
integrally thereto or as one or more separate documents,
information pertaining to the contents or the kit and the use of
the muteins or polypeptides thereof. The kit may include in some
embodiments one or more compositions that are formulated for
reconstitution in a diluent. Such a diluent, e.g. a sterile
diluent, may also be included in the kit, for example within a
container.
D. Muteins of the Disclosure
[0221] When used herein in the context of the muteins of the
present disclosure that bind to pyoverdine or pyochelin, the term
"specific for" includes that the mutein is directed against, binds
to, or reacts with pyoverdine or pyochelin, respectively. Thus,
being directed to, binding to or reacting with includes that the
mutein specifically binds to pyoverdine or pyochelin, respectively.
The term "specifically" in this context means that the mutein
reacts with a pyoverdine protein or a pyochelin protein, as
described herein, but essentially not with another protein. The
term "another protein" includes any non-pyoverdine or non-pyochelin
protein, respectively, including proteins closely related to or
being homologous to pyoverdine or pyochelin against which the
muteins disclosed herein are directed to. However, pyoverdine or
pyochelin proteins, fragments and/or variants from species other
than human such as those described in the context of the definition
"subject" are not excluded by the term "another protein". The term
"does not essentially bind" means that the mutein of the present
disclosure does not bind another protein, i.e., shows a
cross-reactivity of less than 30%, preferably 20%, more preferably
10%, particularly preferably less than 9, 8, 7, 6 or 5%. Whether
the mutein specifically reacts as defined herein above can easily
be tested, inter alia, by comparing the reaction of a lipocalin
mutein of the present disclosure with pyoverdine or pyochelin and
the reaction of said mutein with (an) other protein(s). "Specific
binding" can also be determined, for example, in accordance with
Western blots, ELISA-, RIA-, ECL-, IRMA-tests, FACS, IHC and
peptide scans.
[0222] The amino acid sequence of a mutein according to the
disclosure has a high sequence identity to human lipocalin 2 when
compared to sequence identities with another lipocalin (see also
above). In this general context the amino acid sequence of a mutein
of the combination according to the disclosure is at least
substantially similar to the amino acid sequence of the
corresponding lipocalin (the wild-type hNGAL). A respective
sequence of a mutein of the combination according to the
disclosure, being substantially similar to the sequence of mature
hNGAL, such as at at least 65%, at least 70%, at least 75%, at
least 80%, at least 82%, at least 85%, at least 87%, at least 90%
identity, including at least 95% identity to the sequence of mature
hNGAL. In this regard, a mutein of the disclosure of course may
contain, in comparison substitutions as described herein which
renders the mutein capable of binding to pyoverdine type I, II, III
or pyochelin, respectively. Typically a mutein of hNGAL includes
one or more mutations--relative to the native sequence of hNGAL--of
amino acids in the four loops at the open end of the ligand binding
site of hNGAL. As explained above, these regions are essential in
determining the binding specificity of a mutein for pyoverdine type
I, II, III or pyochelin. A mutein derived hNGAL or a homologue
thereof, may have one, two, three, four or more mutated amino acid
residues at any sequence position in the N-terminal region and/or
in the three peptide loops BC, DE, and FG arranged at the end of
the .beta.-barrel structure that is located opposite to the natural
binding pocket.
[0223] A mutein according to the disclosure includes one or more,
such as two, three, four, five, six, seven, eight, nine, ten,
eleven, twelve, thirteen, fourteen, fifteen, sixteen, seventeen,
eighteen, nineteen or even twenty substitutions in comparison to
the corresponding native hNGAL alin, provided that such a mutein
should be capable of binding to pyoverdine or pyochelin,
respectively. For example, a mutein can have a substitution at a
position corresponding to a distinct position (i.e. at a
corresponding position) of hNGAL. In some embodiments a mutein of
the combination according to the disclosure includes at least two
amino acid substitutions, including 2, 3, 4, 5, ors even more,
amino acid substitutions of a native amino acid by an arginine
residue. Accordingly, the nucleic acid of a protein `reference`
scaffold as described herein is subject to mutagenesis with the aim
of generating a mutein which is capable of binding to pyoverdine
type I, II, III or pyochelin, respectively.
[0224] Also, a mutein of the present disclosure can comprise a
heterologous amino acid sequence at its N- or C-Terminus,
preferably C-terminus, such as a Strep-tag, e.g., Strep II tag
without affecting the biological activity (binding to its target
e.g. pyoverdine or pyochelin, respectively) of the mutein.
[0225] Specifically, in order to determine whether an amino acid
residue of the amino acid sequence of a mutein different from
wild-type hNGAL corresponds to a certain position in the amino acid
sequence of wild-type hNGAL, a skilled artisan can use means and
methods well-known in the art, e.g., alignments, either manually or
by using computer programs such as BLAST2.0, which stands for Basic
Local Alignment Search Tool or ClustalW or any other suitable
program which is suitable to generate sequence alignments.
Accordingly, wild-type hNGAL can serve as "subject sequence" or
"reference sequence", while the amino acid sequence of a mutein
different from the wild-type hNGAL described herein serves as
"query sequence". The terms "reference sequence" and "wild type
sequence" are used interchangeably herein.
[0226] In some embodiments a substitution (or replacement) is a
conservative substitution. Nevertheless, any
substitution--including non-conservative substitution or one or
more from the exemplary substitutions listed below--is envisaged as
long as the mutein retains its capability to bind to pyoverdine
type I, II, III or pyochelin, respectively, and/or it has an
identity to the then substituted sequence in that it is at least
60%, such as at least 65%, at least 70%, at least 75%, at least
80%, at least 85% or higher identical to the "original"
sequence.
[0227] Conservative substitutions are generally the following
substitutions, listed according to the amino acid to be mutated,
each followed by one or more replacement(s) that can be taken to be
conservative: Ala.fwdarw.Gly, Ser, Val; Arg.fwdarw.Lys;
Asn.fwdarw.Gln, His; Asp.fwdarw.Glu; Cys.fwdarw.Ser;
Gln.fwdarw.Asn; Glu.fwdarw.Asp; Gly.fwdarw.Ala; His.fwdarw.Arg,
Asn, Gln; Ile.fwdarw.Leu, Val; Leu.fwdarw.Ile, Val; Lys.fwdarw.Arg,
Gln, Glu; Met.fwdarw.Leu, Tyr, Ile; Phe.fwdarw.Met, Leu, Tyr;
Ser.fwdarw.Thr; Thr.fwdarw.Ser; Trp.fwdarw.Tyr; Tyr.fwdarw.Trp,
Phe; Val.fwdarw.lie, Leu. Other substitutions are also permissible
and can be determined empirically or in accord with other known
conservative or non-conservative substitutions. As a further
orientation, the following eight groups each contain amino acids
that can typically be taken to define conservative substitutions
for one another:
Alanine (Ala), Glycine (Gly);
[0228] Aspartic acid (Asp), Glutamic acid (Glu);
Asparagine (Asn), Glutamine (Gln);
Arginine (Arg), Lysine (Lys);
Isoleucine (Ile), Leucine (Leu), Methionine (Met), Valine
(Val);
Phenylalanine (Phe), Tyrosine (Tyr), Tryptophan (Trp);
Serine (Ser), Threonine (Thr); and
Cysteine (Cys), Methionine (Met)
[0229] If such substitutions result in a change in biological
activity, then more substantial changes, such as the following, or
as further described below in reference to amino acid classes, may
be introduced and the products screened for a desired
characteristic.
[0230] Examples of such more substantial changes are:
Ala.fwdarw.Leu, Ile; Arg.fwdarw.Gln; Asn.fwdarw.Asp, Lys, Arg, His;
Asp.fwdarw.Asn; Cys.fwdarw.Ala; Gln.fwdarw.Glu; Glu.fwdarw.Gln;
His.fwdarw.Lys; Ile.fwdarw.Met, Ala, Phe; Leu.fwdarw.Ala, Met,
Norleucine; Lys.fwdarw.Asn; Met.fwdarw.Phe; Phe.fwdarw.Val, Ile,
Ala; Trp.fwdarw.Phe; Tyr.fwdarw.Thr, Ser; Val.fwdarw.Met, Phe,
Ala.
[0231] Substantial modifications in the biological properties of
hNGAL are accomplished by selecting substitutions that differ
significantly in their effect on maintaining (a) the structure of
the polypeptide backbone in the area of the substitution, for
example, as a sheet or helical conformation, (b) the charge or
hydrophobicity of the molecule at the target site, or (c) the bulk
of the side chain. Naturally occurring residues are divided into
groups based on common side-chain properties: (1) hydrophobic:
norleucine, methionine, alanine, valine, leucine, iso-leucine; (2)
neutral hydrophilic: cysteine, serine, threonine; (3) acidic:
asparitic acid, glutamic acid; (4) basic: asparagine, glutamine,
histidine, lysine, arginine; (5) residues that influence chain
orientation: glycine, proline; and (6) aromatic: tryptophan,
tyrosine, phenylalanine.
[0232] Non-conservative substitutions will entail exchanging a
member of one of these classes for another class. Any cysteine
residue not involved in maintaining the proper conformation of
hNGAL also may be substituted, generally with serine, to improve
the oxidative stability of the molecule and prevent aberrant
crosslinking. Conversely, cysteine bond (s) may be added to improve
its stability.
[0233] Any mutation, including an insertion as discussed above, can
be accomplished very easily on the nucleic acid, e.g. DNA level
using established standard methods. Illustrative examples of
alterations of the amino acid sequence are insertions or deletions
as well as amino acid substitutions. Such substitutions may be
conservative, i.e. an amino acid residue is replaced with an amino
acid residue of chemically similar properties, in particular with
regard to polarity as well as size. Examples of conservative
substitutions are the replacements among the members of the
following groups: 1) alanine, serine, and threonine; 2) aspartic
acid and glutamic acid; 3) asparagine and glutamine; 4) arginine
and lysine; 5) iso-leucine, leucine, methionine, and valine; and 6)
phenylalanine, tyrosine, and tryptophan. On the other hand, it is
also possible to introduce non-conservative alterations in the
amino acid sequence. In addition, instead of replacing single amino
acid residues, it is also possible to either insert or delete one
or more continuous amino acids of the primary structure of hNGAL as
long as these deletions or insertion result in a stable
folded/functional mutein.
[0234] Modifications of the amino acid sequence include directed
mutagenesis of single amino acid positions in order to simplify
sub-cloning of the mutated hNGAL gene or its parts by incorporating
cleavage sites for certain restriction enzymes. In addition, these
mutations can also be incorporated to further improve the affinity
of a mutein for a given target such as pyoverdine or pyochelin.
Furthermore, mutations can be introduced in order to modulate
certain characteristics of the mutein such as to improve folding
stability, serum stability, protein resistance or water solubility
or to reduce aggregation tendency, if necessary. For example,
naturally occurring cysteine residues may be mutated to other amino
acids to prevent disulphide bridge formation. It is also possible
to deliberately mutate other amino acid sequence position to
cysteine in order to introduce new reactive groups, for example for
the conjugation to other compounds, such as polyethylene glycol
(PEG), hydroxyethyl starch (HES), biotin, peptides or proteins, or
for the formation of non-naturally occurring disulphide linkages.
The generated thiol moiety may be used to PEGylate or HESylate the
mutein, for example, in order to increase the serum half-life of a
respective mutein.
[0235] It is also possible to mutate other amino acid sequence
positions to cysteine in order to introduce new reactive groups,
for example, for the conjugation to other compounds, such as
polyethylene glycol (PEG), hydroxyethyl starch (HES), biotin,
peptides or proteins, or for the formation of non-naturally
occurring disulphide linkages.
[0236] In some embodiments, if one of the above moieties is
conjugated to a mutein of the disclosure, conjugation to an amino
acid side chain can be advantageous. Suitable amino acid side
chains may occur naturally in the amino acid sequence of hNGAL or
may be introduced by mutagenesis. In case a suitable binding site
is introduced via mutagenesis, one possibility is the replacement
of an amino acid at the appropriate position by a cysteine
residue.
[0237] With respect to a mutein of human lipocalin 2, exemplary
possibilities of such a mutation to introduce a cysteine residue
into the amino acid sequence of a lipocalin including human
lipocalin 2 mutein to include the introduction of a cysteine (Cys)
residue at at least at one of the sequence positions that
correspond to sequence positions 14, 21, 60, 84, 88, 116, 141, 145,
143, 146 or 158 of the wild type sequence of human NGAL. In some
embodiments where a human lipocalin 2 mutein of the disclosure has
a sequence in which, in comparison to the sequence of the
SWISS-PROT/UniProt Data Bank Accession Number P80188, a cysteine
has been replaced by another amino acid residue, the corresponding
cysteine may be reintroduced into the sequence. As an illustrative
example, a cysteine residue at amino acid position 87 may be
introduced in such a case by reverting to a cysteine as originally
present in the sequence of SWISS-PROT accession No P80188. The
generated thiol moiety at the side of any of the amino acid
positions 14, 21, 60, 84, 88, 116, 141, 145, 143, 146 and/or 158
may be used to PEGylate or HESylate the mutein, for example, in
order to increase the serum half-life of a respective human
lipocalin 2 mutein.
[0238] In another embodiment, in order to provide suitable amino
acid side chains for conjugating one of the above compounds to a
mutein according to the present disclosure, artificial amino acids
may be introduced by mutagenesis. Generally, such artificial amino
acids are designed to be more reactive and thus to facilitate the
conjugation to the desired compound. One example of such an
artificial amino acid that may be introduced via an artificial tRNA
is para-acetyl-phenylalanine.
[0239] For several applications of the muteins disclosed herein it
may be advantageous to use them in the form of fusion proteins. In
some embodiments, a mutein of the disclosure is fused at its
N-terminus or its C-terminus to a protein, a protein domain or a
peptide, for instance, a signal sequence and/or an affinity
tag.
[0240] Affinity tags such as the Strep-tag.RTM. or Strep-tag.RTM.
II (Schmidt, T. G. M. et al. (1996) J. Mol. Biol. 255, 753-766),
the myc-tag, the FLAG-tag, the His.sub.6-tag or the HA-tag or
proteins such as glutathione-S-transferase also allow easy
detection and/or purification of recombinant proteins are further
examples of suitable fusion partners. Finally, proteins with
chromogenic or fluorescent properties such as the green fluorescent
protein (GFP) or the yellow fluorescent protein (YFP) are suitable
fusion partners for muteins of the disclosure as well.
[0241] In general, it is possible to label the muteins of the
disclosure with any appropriate chemical substance or enzyme, which
directly or indirectly generates a detectable compound or signal in
a chemical, physical, optical, or enzymatic reaction. An example
for a physical reaction and at the same time optical
reaction/marker is the emission of fluorescence upon irradiation or
the emission of X-rays when using a radioactive label. Alkaline
phosphatase, horseradish peroxidase and .beta.-galactosidase are
examples of enzyme labels (and at the same time optical labels)
which catalyze the formation of chromogenic reaction products. In
general, all labels commonly used for antibodies (except those
exclusively used with the sugar moiety in the Fc part of
immunoglobulins) can also be used for conjugation to the muteins of
the disclosure. The muteins of the disclosure may also be
conjugated with any suitable therapeutically active agent, e.g.,
for the targeted delivery of such agents to a given cell, tissue or
organ or for the selective targeting of cells, e.g., of tumor cells
without affecting the surrounding normal cells. Examples of such
therapeutically active agents include radionuclides, toxins, small
organic molecules, and therapeutic peptides (such as peptides
acting as agonists/antagonists of a cell surface receptor or
peptides competing for a protein binding site on a given cellular
target). The muteins of the disclosure may, however, also be
conjugated with therapeutically active nucleic acids such as
antisense nucleic acid molecules, small interfering RNAs, micro
RNAs or ribozymes. Such conjugates can be produced by methods well
known in the art.
[0242] As indicated above, a mutein of the disclosure may in some
embodiments be conjugated to a moiety that extends the serum
half-life of the mutein (in this regard see also PCT publication WO
2006/56464 where such conjugation strategies are described with
references to muteins of human neutrophile gelatinase-associated
lipocalin with binding affinity for CTLA-4). The moiety that
extends the serum half-life may be a polyalkylene glycol molecule,
hydroxyethyl starch, fatty acid molecules, such as palmitic acid
(Vajo & Duckworth 2000, Pharmacol. Rev. 52, 1-9), an Fc part of
an immunoglobulin, a CH3 domain of an immunoglobulin, a CH4 domain
of an immunoglobulin, an albumin binding peptide, or an albumin
binding protein, transferrin to name only a few. The albumin
binding protein may be a bacterial albumin binding protein, an
antibody, an antibody fragment including domain antibodies (see
U.S. Pat. No. 6,696,245, for example), or a mutein with binding
activity for albumin. Accordingly, suitable conjugation partners
for extending the half-life of a mutein of the disclosure include
an albumin binding protein, for example, a bacterial albumin
binding domain, such as the one of streptococcal protein G (Konig,
T., & Skerra, A. (1998) J. Immunol. Methods 218, 73-83). Other
examples of albumin binding peptides that can be used as
conjugation partner are, for instance, those having a
Cys-Xaa.sub.1-Xaa.sub.2-Xaa.sub.3-Xaa.sub.4-Cys consensus sequence,
wherein Xaa.sub.1 is Asp, Asn, Ser, Thr, or Trp; Xaa.sub.2 is Asn,
Gln, His, lie, Leu, or Lys; Xaa.sub.3 is Ala, Asp, Phe, Trp, or
Tyr; and Xaa.sub.4 is Asp, Gly, Leu, Phe, Ser, or Thr as described
in US patent application 2003/0069395 or Dennis et al. (SEQ ID NO:
131; Dennis, M. S., Zhang, M., Meng, Y. G., Kadkhodayan, M.,
Kirchhofer, D., Combs, D. & Damico, L. A. (2002) J Biol Chem
277, 35035-35043).
[0243] In other embodiments, albumin itself (Osborn, B. L. et al.,
2002, J. Pharmacol. Exp. Ther. 303, 540-548), or a biological
active fragment of albumin can be used as conjugation partner of a
mutein of the disclosure. The term "albumin" includes all mammal
albumins such as human serum albumin or bovine serum albumin or rat
albumine. The albumin or fragment thereof can be recombinantly
produced as described in U.S. Pat. No. 5,728,553 or European patent
applications EP 0 330 451 and EP 0 361 991. Recombinant human
albumin (Recombumin.RTM.) Novozymes Delta Ltd. (Nottingham, UK) can
be conjugated or fused to a mutein of the disclosure in order to
extend the half-life of the mutein.
[0244] If the albumin-binding protein is an antibody fragment it
may be a domain antibody. Domain Antibodies (dAbs) are engineered
to allow precise control over biophysical properties and in vivo
half-life to create the optimal safety and efficacy product
profile. Domain Antibodies are for example commercially available
from Domantis Ltd. (Cambridge, UK and MA, USA).
[0245] Using transferrin as a moiety to extend the serum half-life
of the muteins of the disclosure, the muteins can be genetically
fused to the N or C terminus, or both, of non-glycosylated
transferrin. Non-glycosylated transferrin has a half-life of 14-17
days, and a transferrin fusion protein will similarly have an
extended half-life. The transferrin carrier also provides high
bioavailability, biodistribution and circulating stability. This
technology is commercially available from BioRexis (BioRexis
Pharmaceutical Corporation, PA, USA). Recombinant human transferrin
(DeltaFerrin.TM.) for use as a protein stabilizer/half-life
extension partner is also commercially available from Novozymes
Delta Ltd. (Nottingham, UK).
[0246] If an Fc part of an immunoglobulin is used for the purpose
to prolong the serum half-life of the muteins of the disclosure,
the SynFusion.TM. technology, commercially available from Syntonix
Pharmaceuticals, Inc (MA. USA), may be used. The use of this
Fc-fusion technology allows the creation of longer-acting
biopharmaceuticals and may for example consist of two copies of the
mutein linked to the Fc region of an antibody to improve
pharmacokinetics, solubility, and production efficiency.
[0247] Yet another alternative to prolong the half-life of the
muteins of the disclosure is to fuse to the N- or C-terminus of the
muteins long, unstructured, flexible glycine-rich sequences (for
example poly-glycine with about 20 to 80 consecutive glycine
residues). This approach disclosed in WO2007/038619, for example,
has also been term "rPEG" (recombinant PEG).
[0248] If polyalkylene glycol is used as conjugation partner, the
polyalkylene glycol can be substituted, unsubstituted, linear or
branched. It can also be an activated polyalkylene derivative.
Examples of suitable compounds are polyethylene glycol (PEG)
molecules as described in WO 99/64016, in U.S. Pat. No. 6,177,074
or in U.S. Pat. No. 6,403,564 in relation to interferon, or as
described for other proteins such as PEG-modified asparaginase,
PEG-adenosine deaminase (PEG-ADA) or PEG-superoxide dismutase (see
for example, Fuertges et al. (1990) The Clinical Efficacy of
Poly(Ethylene Glycol)-Modified Proteins J. Control. Release 11,
139-148). The molecular weight of such a polymer, such as
polyethylene glycol, may range from about 300 to about 70.000
Dalton, including, for example, polyethylene glycol with a
molecular weight of about 10.000, of about 20.000, of about 30.000
or of about 40.000 Dalton. Moreover, as e.g. described in U.S. Pat.
No. 6,500,930 or 6,620,413, carbohydrate oligo- and polymers such
as starch or hydroxyethyl starch (HES) can be conjugated to a
mutein of the disclosure for the purpose of serum half-life
extension.
[0249] In addition, a mutein disclosed herein may be fused to a
moiety may confer new characteristics to the muteins of the
disclosure such as enzymatic activity or binding affinity for other
molecules. Examples of suitable fusion partners are alkaline
phosphatase, horseradish peroxidase, gluthation-S-transferase, the
albumin-binding domain of protein G, protein A, antibody fragments,
oligomerization domains or toxins.
[0250] In particular, it may be possible to fuse a mutein disclosed
herein with a separate enzyme active site such that both
"components" of the resulting fusion protein together act on a
given therapeutic target. The binding domain of the mutein attaches
to the disease-causing target, allowing the enzyme domain to
abolish the biological function of the target.
[0251] The present disclosure also relates to nucleic acid
molecules (DNA and RNA) that include nucleotide sequences encoding
the muteins of the disclosure. Since the degeneracy of the genetic
code permits substitutions of certain codons by other codons
specifying the same amino acid, the disclosure is not limited to a
specific nucleic acid molecule encoding a mutein as described
herein but encompasses all nucleic acid molecules that include
nucleotide sequences encoding a functional mutein. In this regard,
the present disclosure provides nucleotide sequences encoding some
muteins of the disclosure as shown in SEQ ID NOs: 65-126.
[0252] In one embodiment of the disclosure, the method includes
subjecting the nucleic acid molecule to mutagenesis at nucleotide
triplets coding for at least one, or even more, of the sequence
positions corresponding to the sequence positions 28, 34, 36,
39-42, 44-47, 49, 52, 54-55, 65, 68, 70, 72-75, 77, 79-81, 87, 96,
100, 103, 106, 108, 123, 125, 127, 132, 134, 141 and 145 of the
linear polypeptide sequence of human NGAL (SEQ ID NO: 2).
[0253] The disclosure also includes nucleic acid molecules encoding
the muteins of the disclosure, which include additional mutations
outside the indicated sequence positions of experimental
mutagenesis. Such mutations are often tolerated or can even prove
to be advantageous, for example if they contribute to an improved
folding efficiency, serum stability, thermal stability or ligand
binding affinity of the muteins.
[0254] A nucleic acid molecule disclosed in this application may be
"operably linked" to a regulatory sequence (or regulatory
sequences) to allow expression of this nucleic acid molecule.
[0255] A nucleic acid molecule, such as DNA, is referred to as
"capable of expressing a nucleic acid molecule" or capable "to
allow expression of a nucleotide sequence" if it includes sequence
elements which contain information regarding to transcriptional
and/or translational regulation, and such sequences are "operably
linked" to the nucleotide sequence encoding the polypeptide. An
operable linkage is a linkage in which the regulatory sequence
elements and the sequence to be expressed are connected in a way
that enables gene expression. The precise nature of the regulatory
regions necessary for gene expression may vary among species, but
in general these regions include a promoter which, in prokaryotes,
contains both the promoter per se, i.e. DNA elements directing the
initiation of transcription, as well as DNA elements which, when
transcribed into RNA, will signal the initiation of translation.
Such promoter regions normally include 5' non-coding sequences
involved in initiation of transcription and translation, such as
the -35/-10 boxes and the Shine-Dalgarno element in prokaryotes or
the TATA box, CAAT sequences, and 5'-capping elements in
eukaryotes. These regions can also include enhancer or repressor
elements as well as translated signal and leader sequences for
targeting the native polypeptide to a specific compartment of a
host cell.
[0256] In addition, the 3' non-coding sequences may contain
regulatory elements involved in transcriptional termination,
polyadenylation or the like. If, however, these termination
sequences are not satisfactory functional in a particular host
cell, then they may be substituted with signals functional in that
cell.
[0257] Therefore, a nucleic acid molecule of the disclosure can
include a regulatory sequence, such as a promoter sequence. In some
embodiments a nucleic acid molecule of the disclosure includes a
promoter sequence and a transcriptional termination sequence.
[0258] Suitable prokaryotic promoters are, for example, the tet
promoter, the lacUV5 promoter or the T7 promoter. Examples of
promoters useful for expression in eukaryotic cells are the SV40
promoter or the CMV promoter.
[0259] The nucleic acid molecules of the disclosure can also be
part of a vector or any other kind of cloning vehicle, such as a
plasmid, a phagemid, a phage, a baculovirus, a cosmid or an
artificial chromosome.
[0260] In one embodiment, the nucleic acid molecule is included in
a phasmid. A phasmid vector denotes a vector encoding the
intergenic region of a temperent phage, such as M13 or f1, or a
functional part thereof fused to the cDNA of interest. After
superinfection of the bacterial host cells with such an phagemid
vector and an appropriate helper phage (e.g. M13K07, VCS-M13 or
R408) intact phage particles are produced, thereby enabling
physical coupling of the encoded heterologous cDNA to its
corresponding polypeptide displayed on the phage surface (see e.g.
Lowman, H. B. (1997) Annu. Rev. Biophys. Biomol. Struct. 26,
401-424, or Rodi, D. J., and Makowski, L. (1999) Curr. Opin.
Biotechnol. 10, 87-93).
[0261] Such cloning vehicles can include, aside from the regulatory
sequences described above and a nucleic acid sequence encoding a
mutein as described herein, replication and control sequences
derived from a species compatible with the host cell that is used
for expression as well as selection markers conferring a selectable
phenotype on transformed or transfected cells. Large numbers of
suitable cloning vectors are known in the art, and are commercially
available.
[0262] The DNA molecule encoding a mutein as described herein, and
in particular a cloning vector containing the coding sequence of
such a mutein can be transformed into a host cell capable of
expressing the gene. Transformation can be performed using standard
techniques. Thus, the disclosure is also directed to a host cell
containing a nucleic acid molecule as disclosed herein.
[0263] The transformed host cells are cultured under conditions
suitable for expression of the nucleotide sequence encoding a
fusion protein of the disclosure. Suitable host cells can be
prokaryotic, such as Escherichia coli (E. coli) or Bacillus
subtilis, or eukaryotic, such as Saccharomyces cerevisiae, Pichia
pastoris, SF9 or High5 insect cells, immortalized mammalian cell
lines (e.g., HeLa cells or CHO cells) or primary mammalian
cells.
[0264] The disclosure also relates to a method for the production
of a mutein or a polypeptide thereof as described herein, wherein
the mutein or polypeptide, a fragment of the mutein or polypeptide
or a fusion protein of the mutein or polypeptide and another
polypeptide is produced starting from the nucleic acid coding for
the mutein or polypeptide by means of genetic engineering methods.
The method can be carried out in vivo, the mutein or polypeptide
can for example be produced in a bacterial or eucaryotic host
organism and then isolated from this host organism or its culture.
It is also possible to produce a protein in vitro, for example by
use of an in vitro translation system.
[0265] When producing the mutein or polypeptide thereof in vivo a
nucleic acid encoding such mutein or polypeptide is introduced into
a suitable bacterial or eukaryotic host organism by means of
recombinant DNA technology (as already outlined above). For this
purpose, the host cell is first transformed with a cloning vector
that includes a nucleic acid molecule encoding a mutein as
described herein using established standard methods. The host cell
is then cultured under conditions, which allow expression of the
heterologous DNA and thus the synthesis of the corresponding
polypeptide. Subsequently, the polypeptide is recovered either from
the cell or from the cultivation medium.
[0266] In some embodiments, a nucleic acid molecule, such as DNA,
disclosed in this application may be "operably linked" to another
nucleic acid molecule of the disclosure to allow expression of a
fusion protein of the disclosure. In this regard, an operable
linkage is a linkage in which the sequence elements of the first
nucleic acid molecule and the sequence elements of the second
nucleic acid molecule are connected in a way that enables
expression of the fusion protein as a single polypeptide.
[0267] In addition, in some embodiments, the naturally occurring
disulfide bond between Cys 76 and Cys 175 may be removed in hNGAL
muteins of the disclosure. Accordingly, such muteins can be
produced in a cell compartment having a reducing redox milieu, for
example, in the cytoplasma of Gram-negative bacteria.
[0268] In case a mutein of the disclosure includes intramolecular
disulfide bonds, it may be preferred to direct the nascent
polypeptide to a cell compartment having an oxidizing redox milieu
using an appropriate signal sequence. Such an oxidizing environment
may be provided by the periplasm of Gram-negative bacteria such as
E. coli, in the extracellular milieu of Gram-positive bacteria or
in the lumen of the endoplasmatic reticulum of eukaryotic cells and
usually favors the formation of structural disulfide bonds.
[0269] It is, however, also possible to produce a mutein or
polypeptide thereof of the disclosure in the cytosol of a host
cell, preferably E. coli. In this case, the mutein or polypeptide
can either be directly obtained in a soluble and folded state or
recovered in form of inclusion bodies, followed by renaturation in
vitro. A further option is the use of specific host strains having
an oxidizing intracellular milieu, which may thus allow the
formation of disulfide bonds in the cytosol (Venturi et al. (2002)
J. Mol. Biol. 315, 1-8.).
[0270] However, the mutein or polypeptide as described herein may
not necessarily be generated or produced only by use of genetic
engineering. Rather, such mutein or polypeptide can also be
obtained by chemical synthesis such as Merrifield solid phase
polypeptide synthesis or by in vitro transcription and translation.
It is for example possible that promising mutations are identified
using molecular modeling and then to synthesize the wanted
(designed) polypeptide in vitro and investigate the binding
activity for pyoverdine type I, II, III or pyochelin. Methods for
the solid phase and/or solution phase synthesis of proteins are
well known in the art (see e.g. Bruckdorfer, T. et al. (2004) Curr.
Pharm. Biotechnol. 5, 29-43).
[0271] In another embodiment, the mutein or polypeptide of the
disclosure may be produced by in vitro transcription/translation
employing well-established methods known to those skilled in the
art.
[0272] The skilled worker will appreciate methods useful to prepare
muteins or polypeptides thereof contemplated by the present
disclosure but whose protein or nucleic acid sequences are not
explicitly disclosed herein. As an overview, such modifications of
the amino acid sequence include, e.g., directed mutagenesis of
single amino acid positions in order to simplify sub-cloning of a
mutated hNGAL gene or its parts by incorporating cleavage sites for
certain restriction enzymes. In addition, these mutations can also
be incorporated to further improve the affinity of a mutein for its
target (e.g. pyoverdine or pyochelin, respectively). Furthermore,
mutations can be introduced to modulate certain characteristics of
the mutein such as to improve folding stability, serum stability,
protein resistance or water solubility or to reduce aggregation
tendency, if necessary. For example, naturally occurring cysteine
residues may be mutated to other amino acids to prevent disulphide
bridge formation.
[0273] The muteins or polypeptides thereof disclosed herein and
their derivatives can be used in many fields similar to antibodies
or fragments thereof. For example, the muteins can be used for
labeling with an enzyme, an antibody, a radioactive substance or
any other group having biochemical activity or defined binding
characteristics. By doing so, their respective targets or
conjugates or fusion proteins thereof can be detected or brought in
contact with them. In addition, muteins or polypeptides thereof of
the disclosure can serve to detect chemical structures by means of
established analytical methods (e.g., ELISA or Western Blot) or by
microscopy or immunosensorics. In this regard, the detection signal
can either be generated directly by use of a suitable mutein
conjugate or fusion protein or indirectly by immunochemical
detection of the bound mutein via an antibody.
[0274] Additional objects, advantages, and features of this
disclosure will become apparent to those skilled in the art upon
examination of the following Examples and the attached Figures
thereof, which are not intended to be limiting. Thus, it should be
understood that although the present disclosure is specifically
disclosed by exemplary embodiments and optional features,
modification and variation of the disclosures embodied therein
herein disclosed may be resorted to by those skilled in the art,
and that such modifications and variations are considered to be
within the scope of this disclosure.
V. EXAMPLES
Example 1: Purification and Biotinylation of Pseudomonas aeruginosa
Siderophores
[0275] P. aeruginosa produces three groups of pyoverdines i.e.
pyoverdine type I, pyoverdine type II & pyoverdine type III.
Each group has three forms differing in the side chain which is
succinyl, succinamid or .alpha.-ketoglutaryl. In addition P.
aeruginosa produces pyochelin. All ten siderophores can complex
iron as Fe.sup.3+.
[0276] For selection and screening of muteins of interest, the
siderophores may be biotinylated. Biotinylation was performed for
pyoverdine I succinyl variant at the succinyl side chain, for
pyoverdine II succinyl variant at the L-ornithine side chain and
for pyoverdine III succinyl variant mainly at the glycine side
chain. Pyochelin was biotinylated at the phenol ring.
Example 2: Selection of Muteins Specifically Binding to P.
aeruginosa Siderophores
[0277] hNGAL-based libraries, generated by random mutagenesis of
mature hNGAL, were used for selection of muteins specifically
binding to the different siderophores of P. aeruginosa.
Biotinylated and iron loaded Pvd I succinyl. Pvd II succinyl, and
Pvd III succinyl as well as biotinylated non-iron-loaded pyochelin
were used in independent phage display and selection processes.
[0278] 2.times.10.sup.12 phagemids from these libraries were
incubated with 200 nM or 500 nM or 1 .mu.M biotinylated target.
Paramagnetic beads coated with neutravidin or streptavidin were
used to capture target/phagemid complexes which were subsequently
isolated with a magnet. Unbound phagemids were removed by washing
the beads with PBST or PBS. Bound phagemids were first eluted with
300 .mu.l 70 mM triethylamine for 10 min followed by immediate
neutralization of the supernatant with 100 .mu.l 1M Tris-Cl pH 6.0.
After one intermediate wash cycle remaining phagemids were eluted
with 100 mM glycin pH2.2 for 10 min followed by immediate
neutralization with 50 .mu.l 0.5 M Tris-base. Both elution
fractions were pooled and used to infect 4 ml of E. coli XL1-blue
culture (OD.sub.550 0.45-0.6) for reamplification. After incubation
for 30 min under agitation bacteria were collected by
centrifugation at 5000.times.g for 2 min, resuspended in 1 ml
2.times.YT medium and plated on three big LB/Amp agar plates (10
g/l bacto tryptone, 5 g/l yeast extract, 5 g/l NaCl, pH 7.5, 15 g/l
agar, 100 .mu.g/ml ampicillin). Plates were incubated overnight at
32.degree. C. Infected cells were scraped from the agar plates
using 50 ml 2.times.YT medium supplemented with 100 .mu.g/ml
ampicillin (2.times.YT/Amp). 50 ml 2.times.YT/Amp medium were
inoculated with the appropriate volume of bacterial suspension to
reach an OD.sub.550 of 0.08. The culture was incubated at
37.degree. C. on a shaker (160 rpm) until an OD.sub.550 of 0.5 was
reached and then infected with helperphages (1.5.times.10.sup.11
pfu) by incubation for 15 min with gentle agitation and for 45 min
on a shaker at 37.degree. C. Subsequently, kanamycin was added to a
final concentration of 70 .mu.g/ml to select bacteria infected by
helperphages. Finally, expression of the pII-hNGAL muteins was
induced by addition of 25 ng/ml anhydrotetracyclin.
[0279] After 15 h incubation at 24.degree. C. the supernatant of
the culture was cleared by centrifugation (5000.times.g for 20
min). Subsequently, 20 ml supernatant were passed through a
polyethersulfone membrane with a pore size of 0.22 .mu.m. To the
filtrate 5 ml of a solution containing 20% (w/v) PEG-8000 and 15%
(w/v) NaCl in water was added and gently mixed. The solution was
incubated for 30 min on ice before centrifugation for 20 min at
4.degree. C. & 5000.times.g. The pellet containing the
phagemids was dissolved in 1 ml buffer containing 200 mM boric
acid, 160 mM NaCl and 1 mM EDTA. Unsoluble particles were removed
by centrifugation (5000.times.g for 5 min). The supernatant was
transferred to a fresh tube and mixed with 200 .mu.l of a solution
containing 20% (w/v) PEG-8000 and 15% (w/v) NaCl in water. The
solution was incubated 30 min on ice and precipitated phagemids
were subsequently collected by centrifugation (5000.times.g for 5
min). Phagemids were resuspended in PBS supplemented with 50 mM
benzamidine and used for the next round of phagemid selection.
[0280] Four consecutive rounds of selection were performed.
Different washing conditions were applied: i) eight times with 1 ml
PBS/T 5 min incubation for each washing step in all 4 selection
rounds, ii) the number of wash cycles increased from round 1 to 4
iii) fast washing steps were altered with 5 min incubation washing
steps and the number of washings steps was increased from round to
round.
[0281] Phagemid DNA was prepared from E. coli cells infected with
the output of the fourth selection round and the hNGAL mutein
cassette was isolated by digestion of the DNA with BstX1 and
subsequent purification via agarose gel electrophoresis using
standard methods (Sambrook et al., (1989) Molecular cloning: a
laboratory manual). The hNGAL mutein cassette was inserted into the
likewise cut vector, which allows bacterial production of the hNGAL
muteins under the control of a tetracyclin promoter.
CaCl.sub.2-competent TG1-F' cells were transformed with the
ligation mixture and plated on LB/Amp plates.
[0282] For optimization of Pvd I, Pvd II, Pvd III and Pch-specific
muteins, additional libraries were generated based on mutein SEQ ID
NO: 4, SEQ ID NO: 6, SEQ ID NO: 19, SEQ ID NO: 20, SEQ ID NO: 42,
SEQ ID NO: 55, SEQ ID NO: 56 and subsequently SEQ ID NO: 8, SEQ ID
NO: 12 and SEQ ID NO: 45. Libraries were generated using either a
biased randomization of selected positions or error prone
polymerase chain reaction (PCR) based methods. Selection of muteins
was performed as described but with increased stringency.
[0283] In order to facilitate expression in eukaryotic cells,
potential N-glycosylation sites (Asn-X-Ser/Thr) were removed.
[0284] Furthermore, mutations were introduced to further optimize
for stability.
Example 3: Identification of Muteins Specifically Binding to the
Respective P. aeruginosa Siderophores Using High-Throughput ELISA
Screening
[0285] Individual colonies were used to inoculate 2.times.YT/Amp
medium and grown overnight (14-18 h) to stationary phase.
Subsequently, 50 .mu.l 2.times.YT/Amp were inoculated from the
stationary phase cultures and incubated for 3 h at 37.degree. C.
and then shifted to 22.degree. C. until an OD.sub.595 of 0.6-0.8
was reached. Production of muteins was induced by addition of 10
.mu.l 2.times.YT/Amp supplemented with 1.2 .mu.g/ml
anhydrotetracyclin. Cultures were incubated at 22.degree. C. until
the next day. After addition of 40 .mu.l of 5% (w/v) BSA in PBS/T
and incubation for 1 h at 25.degree. C. cultures were ready for use
in screening assays.
[0286] Specific binding of the isolated muteins to the respective
siderophore targets was tested by coating a 1:1 mixture of
neutravidin and streptavidin (5 .mu.g/ml in PBS) overnight at
4.degree. C. on microtiterplates. After blocking the plate 1 h with
2% BSA in PBST the respective biotinylated siderophore target used
for selection was captured on the coated microtiterplates at a
concentration of 1.5-2.5 .mu.g/ml in PBS/T. Plates coated in the
same manner with biotinylated-aldosterone were used as negative
control target in the screening. Subsequently, 20 .mu.l of
BSA-blocked cultures were added to the coated microtiter plate
containing either captured target or aldosterone and incubated for
1 h at 25.degree. C. Bound muteins were detected after 1 h
incubation with anti-T7 antibody conjugated with horseradish
peroxidase (Merck KgaA, Darmstadt) or anti-Streptag antibody
conjugated with horseradish peroxidase (IBA, Boettingen). For
quantification, 20 .mu.l of QuantaBlu fluorogenic peroxidase
substrate was added and the fluorescence determined at an
excitation wavelength of 320 nm and an emission wavelength of 430
nm. Muteins specifically binding to the respective siderophore
targets were then sequenced.
[0287] To select for muteins with increased affinity and stability
screening was performed with i) reduced antigen concentration
and/or ii) competition with unbiotinylated target and/or iii)
incubation of the screening supernatant at 65.degree. C. or
70.degree. C. before addition to the target plate and/or iv) using
reverse screening formats were the muteins were captured via the
Streptag on microtiter plates coated with anti-Streptag antibody
and different concentrations of biotinylated target was added and
detected via extravidin-HRP (Sigma Aldrich, St. Louis, Mo.).
Example 4: Expression of Muteins
[0288] Unique muteins were expressed with C-terminal sequence
SAWSHPQFEK (SEQ ID NO: 127; including the SA linker and the
Strep-tag.RTM. II, WSHPQFEK (SEQ ID NO: 128) in E. coli in 2YT-Amp
media to purify the muteins after expression using Streptactin
affinity chromatography and preparative size exclusion
chromatography were applicable.
Example 5: Affinity of Muteins to Soluble P. aeruginosa
Siderophores Determined in an ELISA Based Setting
[0289] Solution binding of muteins was assayed by a "Solution
binding ELISA", the principle of which was as follows: a constant
concentration of the tested mutein was incubated with variable
concentrations of ligands (Pvd I s, sa, aKG+/-Fe/Pvd II s, sa,
aKG+/-Fe/Pvd III s, sa, aKG+/-Fe/Pch+/-Fe) for 1 h. After this
pre-incubation in solution, an aliquot of the mutein/ligand mixture
was transferred to an ELISA plate with biotinalyted Pvd I s (+Fe),
Pvd II s (+Fe), Pvd III s (+Fe) or Pch immobilized via Neutravidin
to measure the remaining concentration of free muteins. The
concentration of free (non ligand-bound) muteins was determined via
a quantitative ELISA setup.
[0290] In detail, a 384-well plate suitable for fluorescence
measurements (Greiner FLUOTRAC.TM. 600, black flat bottom,
high-binding) was coated with 20 .mu.l of Neutravidin at a
concentration of 5 .mu.g/ml in PBS over night at 4 C. After
washing, the Neutravidin-coated wells were blocked with 100 .mu.l
blocking buffer containing 0.1% Tween 20 and 2% BSA (PBS-TIBSA) for
1 h at room temperature. After washing again, 20 .mu.l biotinylated
pyoverdine or pyochelin in blocking buffer at a concentration of 1
.mu.g/mL were added for 1 h at room temperature and excess reagent
was removed.
[0291] A fixed concentration of muteins was incubated in solution
with varying concentrations of ligand (Pvd I s, sa, aKG+/-Fe/Pvd II
s, sa, aKG+/-Fe/Pvd III s, sa, aKG+/-Fe/Pch+/-Fe), using a suitable
starting concentration which was serially diluted at a 1:3 ratio
down to the picomolar range in PBS-T/BSA. After 1 h incubation at
room temperature, 20 .mu.l of the reaction mixture was transferred
to the 384-well plate upon which biotinylated pyoverdin or
pyochelin was immobilized to capture unbound (free) muteins for 20
min at RT. To allow for transformation of ELISA readout results
into absolute free mutein concentrations, a standard curve
containing varying concentrations of muteins was prepared in
PBS-T/BSA and incubated for 20 min on the same ELISA plate as
well.
[0292] The residual supernatants were discarded and 20 .mu.l
HRP-labeled anti-hNGAL antibody was added at a predetermined
optimal concentration in PBS-T/BSA and incubated for 1 h at RT. The
anti-hNGAL antibody had been obtained by immunization of rabbits
with a mixture of muteins, and was subsequently coupled to HRP
using a kit (EZ-link Plus Activated Peroxidase, Thermo Scientific)
according to the manufacturer's instructions, to obtain the
antibody-HRP conjugate. After washing, 20 .mu.l fluorogenic HRP
substrate (QuantaBlu, Thermo) was added to each well, and the
reaction was allowed to proceed for 15 to 60 minutes. The
fluorescence intensity of every well on the plate was read using a
fluorescence microplate reader (Tecan or Molecular Devices). To
evaluate the data, free mutein concentration, c(mutein).sub.free,
was calculated based on the standard curve results, and plotted
versus ligand concentration, c(Ligand). To obtain the ligand
concentration at which formation the ligand/mutein complex was
blocked by 50% (IC50), the curves were fitted by nonlinear
regression with a single-sites binding model according to
c(mutein).sub.free=c(mutein).sub.tot/(1+c(Ligand)/IC50)), with the
total tracer concentration c(mutein).sub.tot and the IC50 value as
free parameters. Curve fitting was performed using GraphPad Prism 4
software.
[0293] The resulting IC.sub.50 values are summarized in Tables
1A-D. Muteins selected against biotinylated and iron loaded Pvd I
succinyl, Pvd II succinyl and Pvd III succinyl, respectively bound
to all subtypes of the respective Pvd group i.e. muteins selected
against biotinylated and iron loaded Pvd I succinyl bound with
similar affinity to Pvd I succinyl, -succinamid,
-.alpha.-ketoglutaryl with or without complexed iron ion, muteins
selected against biotinylated and iron loaded Pvd II succinyl bound
with similar affinity to Pvd II succinyl, -succinamid,
-.alpha.-ketoglutaryl with or without complexed iron ion and
muteins selected against biotinylated and iron loaded Pvd III
succinyl bound with similar affinity to Pvd III succinyl,
-succinamid, -.alpha.-ketoglutaryl with or without complexed iron
ion. Most of the selected muteins bound with comparable affinity to
all subtypes of the respective group with or without complexed iron
ion.
[0294] The selection against biotinylated non-iron-loaded pyochelin
resulted in lipocalin muteins binding preferably to non iron-loaded
pyochelin, such as lipocalin muteins SEQ ID NO: 56 and 57 binding
with two- to three digit nM affinity to iron-loaded Pch and with
weak affinity or not at all to non-iron loaded Pch, and in
lipocalin muteins such as SEQ ID NO: 55 binding preferably to
iron-loaded pyochelin.
[0295] Affinity optimization of SEQ ID NO: 56 resulted in lipocalin
muteins binding with improved affinity to non-iron loaded Pch and
still with no or weak affinity to iron loaded Pch, whereas affinity
optimization of SEQ ID NO: 55 resulted in lipocalin muteins binding
with more than 75 fold improved affinity to non-iron loaded Pch but
also with single digit nM affinity to iron loaded Pch.
[0296] Thus, with lipocalin mutein selection and optimization it
was accomplished that only four different muteins are sufficient to
bind all 10 subtypes of P. aeruginosa siderophores with and without
complexed iron ion (Pvd I s, sa, .alpha.KG+/-Fe; Pvd II s, sa,
.alpha.KG+/-Fe; Pvd III s, sa, .alpha.KG+/-Fe; Pch+/-Fe).
TABLE-US-00001 TABLE 1A Binding of muteins to P. aeruginosa
siderophore pyoverdine I succinyl, -succinamid,
-.alpha.-ketoglutaryl +/- Fe.sup.3+ in solution Solution binding
ELISA IC50: nM Pvd I Pvd I Pvd I Pvd I Pvd I s sa aKG Pvd I s sa
aKG (+Fe) (+Fe) (+Fe) (- Fe) (-Fe) (-Fe) SEQ ID NO: 2 24 19 13 26
19 13 SEQ ID NO: 4 97 43 91 57 28 50 SEQ ID NO: 5 97 49 73 57 32 42
SEQ ID NO: 6 44 30 37 48 31 36 SEQ ID NO: 7 173 126 59 290 129 53
SEQ ID NO: 8 2.38 1.33 2.15 2.3 0.98 1.8 SEQ ID NO: 9 3.3 1.37 2.4
3.7 1.6 2.9 SEQ ID NO: 10 3.4 1.1 2.87 3.8 0.92 2.9 SEQ ID NO: 11
2.97 1.9 2.57 4 2 3.1 SEQ ID NO: 12 6.8 4.7 6.4 6.9 4.8 5.6 SEQ ID
NO: 13 0.5 0.27 0.37 0.36 0.2 0.24 SEQ ID NO: 14 2.4 1.7 3.1 2.4
1.1 2.2 SEQ ID NO: 15 1.1 0.59 1.2 0.86 0.42 0.69 SEQ ID NO: 16 1.3
0.84 1.6 1 0.63 0.83 SEQ ID NO: 18 5.3 2.2 3.9 2.8 1.8 2.5
TABLE-US-00002 TABLE 1B Binding of muteins to soluble P. aeruginosa
siderophore pyoverdine II succinyl, -succinamid,
-.alpha.-ketoglutaryl +/- Fe3+ in solution Solution binding ELISA
IC50: nM Pvd II Pvd II Pvd II Pvd II s sa aKG Pvd II Pvd II aKG
(+Fe) (+Fe) (+Fe) s (- Fe) sa (-Fe) (-Fe) SEQ ID NO: 19 30 36 21 23
42 34 SEQ ID NO: 20 48 40 85 63 40 89 SEQ ID NO: 26 0.34 0.39 1.3
0.45 0.45 0.75 SEQ ID NO: 27 0.78 1.53 1.97 1.02 1.12 1.4 SEQ ID
NO: 28 0.91 1.75 2.25 1.14 1.5 1.65 SEQ ID NO: 29 0.68 1.5 1.9 0.95
1.2 1.6 SEQ ID NO: 30 0.29 0.53 3 0.4 0.3 2.85 SEQ ID NO: 31 0.29
0.29 1.1 0.38 0.35 0.64 SEQ ID NO: 32 0.27 0.32 1.25 0.42 0.37 0.72
SEQ ID NO: 33 0.28 0.32 1.3 0.4 0.32 0.7 SEQ ID NO: 34 0.29 0.32
1.6 0.27 0.32 1.2 SEQ ID NO: 35 0.33 0.39 0.76 0.34 0.42 0.99 SEQ
ID NO: 36 0.33 0.39 0.76 0.34 0.42 0.99 SEQ ID NO: 37 0.19 0.28 2.1
0.2 0.3 1.4
TABLE-US-00003 TABLE 1C Binding of muteins to P. aeruginosa
siderophore pyoverdine III succinyl, -succinamid,
-.alpha.-ketoglutaryl +/- Fe3+ in solution Solution binding ELISA
IC50: nM Pvd Pvd Pvd Pvd III III III s III sa aKG Pvd III Pvd III
aKG (+Fe) (+Fe) (+Fe) s (- Fe) sa (-Fe) (-Fe) SEQ ID NO: 39 146 147
23 95 94 23 SEQ ID NO: 42 35 15 78 25 7.2 69 SEQ ID NO: 43 0.31
0.25 1.4 0.6 0.46 1.90 SEQ ID NO: 44 0.35 0.26 0.93 0.35 0.21 1.10
SEQ ID NO: 45 0.75 0.43 1.50 0.41 0.46 1.70 SEQ ID NO: 46 0.69 0.30
1.02 0.44 0.30 1.20 SEQ ID NO: 47 0.37 0.30 0.82 0.17 0.28 0.58 SEQ
ID NO: 48 0.28 0.22 0.95 0.29 0.24 0.64 SEQ ID NO: 49 0.32 0.27
0.79 0.21 0.27 0.62 SEQ ID NO: 50 0.29 0.35 0.95 0.29 0.37 0.82 SEQ
ID NO: 51 0.37 0.37 0.97 0.35 0.34 1.1 SEQ ID NO: 52 0.32 0.31 1
0.31 0.31 1 SEQ ID NO: 53 0.21 0.25 0.54 0.19 0.63 0.33
TABLE-US-00004 TABLE 1D Binding of muteins to P. aeruginosa
siderophore pyochelin +/- Fe3+ in solution Solution binding ELISA
IC50: nM pch pch (+Fe) (-Fe) SEQ ID NO: 55 361 N/A SEQ ID NO: 56
N/A 51 SEQ ID NO: 57 N/A 147 SEQ ID NO: 58 N/A 10 SEQ ID NO: 59 N/A
11 SEQ ID NO: 60 8.6 45 SEQ ID NO: 61 5.1 42 SEQ ID NO: 62 4.7 26
SEQ ID NO: 63 5.6 26
[0297] For high throughput affinity ranking, the same assay was
used however with less different concentrations of ligand.
Example 6: Affinity of Muteins Binding to P. aeruginosa
Siderophores Determined in Biacore
[0298] In a Surface Plasmon Resonance (SPR) based assay a Biacore
T200 instrument (GE Healthcare) was used to measure the binding
affinity of muteins to pyoverdine I succinyl, -succinamid,
-.alpha.-ketoglutaryl with complexed iron ion or to pyoverdine II
succinyl, -succinamid, -.alpha.-ketoglutaryl with complexed iron
ion or to pyoverdine III succinyl, -succinamid,
-.alpha.-ketoglutaryl with complexed iron ion. Muteins selected for
binding to pyoverdines and negative control (SEQ ID NO: 64) were
biotinylated for 2 h at room temperature applying an appropriate
excess of EZ-Link NHS-PEG4-Biotin (Thermo, Cat#21329) followed by
separation of non-reacted Biotin using a Zeba Spin Desalting Plate
(Thermo, Cat#21329) according to the manufactures instructions.
[0299] In the SPR affinity assay, biotinylated muteins and negative
control were captured on a sensor chip CAP using the Biotin CAPture
Kit (GE Healthcare): Sensor Chip CAP is pre-immobilized with an
ssDNA oligo. Undiluted Biotin CAPture Reagent (streptavidin
conjugated with the complementary ss-DNA oligo) was applied at a
flow rate of 2 .mu.l/min for 300 s. Subsequently, 1 .mu.g/ml to 100
.mu.g/mL of biotinylated muteins or negative control were applied
for 300 s at a flow rate of 5 .mu.l/min. The reference channel was
loaded with Biotin CAPture Reagent only.
[0300] To determine the binding affinity, four to five dilutions of
the respective Pvd representatives (Pvd I, II, III, including
succinyl, succinamid, -.alpha.-ketoglutaryl+Fe) at a concentration
in the range of 5-2000 nM were prepared in HBS-EP+ buffer (GE
Healthcare) and applied to the prepared chip surface. Applying a
flow rate of 30 .mu.l/min, a single cycle or multi cycle kinetics
approach was used with a sample contact time of 120-180 s and a
dissociation time of 900-2400 s. Absence of binding to the negative
control SEQ ID NO: 64 was confirmed using a high concentration
(e.g. 1200 nM) of the respective Pvd. After ligand immobilization,
for analysis using single cycle kinetics all 4-5 concentrations of
Pvd were applied consecutively in ascending order before the
dissociation was monitored. For analysis using multi cycle kinetics
4 dilutions of Pvd were applied, each followed a dissociation
phase. All measurements were performed at 25.degree. C.
Regeneration of the Sensor Chip CAP surface was achieved with an
injection of 6 M Gua-HCl with 0.25 M NaOH followed by an extra wash
with running buffer and a stabilization period of 120 s. Data were
evaluated with Biacore T200 Evaluation software (V 1.0). Double
referencing was used. A 1:1 Binding model was used to fit the raw
data.
[0301] The resulting kinetic constants for a selection of lipocalin
muteins are summarized in Tables 2A-C. Lipocalin muteins could be
generated for each Pvd group binding in the subnM to low single
digit nM range to all suptypes of the respective Pvd group. The
natural ligand of wild type hNGAL Fe-enterobactin, however, is not
bound by the Pvd specific lipocalin muteins.
TABLE-US-00005 TABLE 2A Kinetic constants of Pvd I specific
lipocalin muteins to Pvd I succinyl, - succinamid, and
-.alpha.-ketoglutaryl complexed with Fe.sup.3+. Fe- Pvd I s (+Fe)
Pvd I sa (+Fe) Pvd I k (+Fe) Enterobactin k.sub.on k.sub.off
K.sub.D k.sub.on k.sub.off K.sub.D k.sub.on k.sub.off K.sub.D
K.sub.D SEQ ID [1/Ms] [1/s] [nM] [1/Ms] [1/s] [nM] [1/Ms] [1/s]
[nM] [nM] SEQ ID NO: 8 5.37E+04 1.79E-04 3.33 1.11E+05 1.20E-04
1.08 4.74E+04 2.35E-04 4.95 no bdg. SEQ ID NO: 9 3.31E+04 3.30E-04
9.97 8.02E+04 2.57E-04 3.20 3.80E+04 5.32E-04 14.03 no bdg. SEQ ID
NO: 10 3.47E+04 4.78E-04 13.78 8.63E+04 3.04E-04 3.52 5.02E+04
6.31E-04 12.57 no bdg. SEQ ID NO: 11 2.84E+04 4.04E-04 14.22
6.76E+04 2.97E-04 4.40 3.48E+04 5.86E-04 16.84 no bdg. SEQ ID NO:
13 1.17E+05 6.15E-05 0.53 1.65E+05 4.24E-05 0.26 9.51E+04 8.37E-05
0.88 no bdg. SEQ ID NO: 16 3.56E+04 1.88E-04 5.28 5.43E+04 1.56E-04
2.87 3.14E+04 2.54E-04 8.10 no bdg.
TABLE-US-00006 TABLE 2B Kinetic constants of Pvd II specific
lipocalin muteins to Pvd II succinyl, - succinamid, and
-.alpha.-ketoglutaryl complexed with Fe.sup.3+. Fe- Pvd II s (+Fe)
Pvd II sa (+Fe) Pvd II k (+Fe) Enterobactin k.sub.on k.sub.off
K.sub.D k.sub.on k.sub.off K.sub.D k.sub.on k.sub.off K.sub.D
K.sub.D SEQ ID [1/Ms] [1/s] [nM] [1/Ms] [1/s] [nM] [1/Ms] [1/s]
[nM] [nM] SEQ ID NO: 32 1.15E+06 1.09E-03 0.94 1.37E+06 9.55E-04
0.7 1.09E+05 3.74E-04 3.44 no bdg. SEQ ID NO: 33 1.23E+06 1.25E-03
1.02 1.41E+06 1.04E-03 0.74 9.93E+04 4.16E-04 4.19 no bdg. SEQ ID
NO: 35 1.31E+05 4.59E-05 0.35 2.48E+05 4.58E-05 0.18 4.35E+04
1.49E-04 3.42 no bdg. SEQ ID NO: 36 1.10E+05 4.30E-05 0.39 1.38E+05
3.67E-05 0.27 2.86E+04 5.62E-05 1.97 no bdg.
TABLE-US-00007 TABLE 2C Kinetic constants of Pvd III specific
lipocalin muteins to Pvd III succinyl, - succinamid, and
-.alpha.-ketoglutaryl complexed with Fe.sup.3+. Fe- Pvd III s (+Fe)
Pvd III sa (+Fe) Pvd III k (+Fe) Enterobactin k.sub.on k.sub.off
K.sub.D k.sub.on k.sub.off K.sub.D k.sub.on k.sub.off K.sub.D
K.sub.D SEQ ID [1/Ms] [1/s] [nM] [1/Ms] [1/s] [nM] [1/Ms] [1/s]
[nM] [nM] SEQ ID NO: 43 7.05E+04 1.58E-04 2.24 3.52E+04 1.07E-04
3.04 5.73E+04 3.03E-04 5.29 n.d. SEQ ID NO: 44 5.62E+04 1.42E-04
2.53 3.03E+04 8.90E-05 2.94 4.82E+04 2.71E-04 5.64 n.d. SEQ ID NO:
45 5.90E+04 1.59E-04 2.70 3.27E+04 9.91E-05 3.03 4.73E+04 3.30E-04
6.99 n.d. SEQ ID NO: 46 8.32E+04 1.66E-04 2.00 4.36E+04 6.90E-05
1.58 7.67E+04 2.41E-04 3.15 n.d. SEQ ID NO: 47 7.89E+04 7.91E-05
1.00 1.28E+05 2.52E-05 0.20 2.92E+04 2.62E-04 8.97 n.d. SEQ ID NO:
48 6.70E+04 1.06E-04 1.58 1.48E+05 9.51E-05 0.64 2.72E+04 1.58E-04
5.81 n.d. SEQ ID NO: 49 6.88E+04 1.05E-04 1.52 1.34E+05 1.12E-04
0.84 2.81E+04 4.29E-05 1.53 n.d. SEQ ID NO: 53 5.10E+04 4.19E-05
0.82 6.73E+04 3.90E-05 0.58 3.88E+04 1.40E-04 3.60 no bdg.
[0302] In addition, absence of binding to various siderophores not
belonging to the respective pyoverdine subgroup (I, II, III) and to
MMP-9 was confirmed using the assay described above by applying
high concentrations (.gtoreq.1 .mu.M) of the following analytes to
the immobilized mutein: Fe-enterobactin, desferoxamine, pyochelin,
pyoverdines from the respective other subgroups, MMP-9 proform and
activated MMP-9. An overview of this analysis is provided in Table
3.
[0303] For determination of kinetic constants and resulting K.sub.D
for the interaction of mutein SEQ ID NO: 62 with Pch+Fe the mutein
or the negative control SEQ ID NO: 64 was immobilized to the
surface of a CM5 chip using standard amine chemistry: The surface
of the chip was activated using EDC and NHS. Subsequently, 5
.mu.g/mL of mutein or the negative control solution in 10 mM
acetate pH 4.0 was applied at a flow rate of 10 .mu.l/min until a
high immobilization level of approximately 2000 RU was achieved.
Residual activated groups were quenched with ethanolamine. The
reference channels were treated with EDC/NHS following ethanolamine
(blank immobilization).
[0304] To determine the affinity, five dilutions of pyochelin
(+Fe), were prepared in HBS-P+ buffer and applied to the prepared
chip surface. The binding assay was carried out with a contact time
of 180 s, dissociation times of 1200-1800 s and applying a flow
rate of 30 .mu.l/min. Measurements were performed at 25.degree. C.
Regeneration of the immobilized mutein surface was achieved by
three consecutive injections of 10 mM Gly-HCl pH 1.5 (120 s)
followed by an extra wash with running buffer and a stabilization
period. Data were evaluated with Biacore T200 Evaluation software
(V 1.0). Double referencing was used. The 1:1 Binding model was
used to fit the raw data.
[0305] The resulting kinetic constant for SEQ ID NO: 62 is shown in
Table 2D.
[0306] Using the same assay, absence of binding to siderophores
different from pyochelin and to MMP-9 was confirmed by applying
high concentrations (.gtoreq.1 .mu.M) of the following analytes to
the immobilized mutein SEQ ID NO: 62: Fe-enterobactin,
desferoxamine, pyoverdine, MMP-9 proform and activated MMP-9. An
overview of the results is shown in Table 3.
TABLE-US-00008 TABLE 2D Kinetic constants of pyochelin specific
lipocalin mutein SEQ ID NO: 62 to pyochelin complexed with
Fe.sup.3+. pch (+Fe) k.sub.on k.sub.off K.sub.D SEQ ID [1/Ms] [1/s]
[nM] SEQ ID NO: 62 2.25E+06 6.43E-04 0.29
TABLE-US-00009 TABLE 3 Specificity of lipocalin muteins binding to
Pvd I, Pvd II, Pvd III or pyochelin. Pvd I s Pvd II s Pvd III pch
Enterobactin Desferox- proform activated (+Fe) (+Fe) s (+Fe) (+Fe)
(+Fe) amin MMP-9 MMP-9 SEQ + - - - - - - - ID NO: 16 SEQ - + - - -
- - - ID NO: 36 SEQ - - + - - - - - ID NO: 53 SEQ - - - + - - - -
ID NO: 62 SEQ - - - - + - - - ID NO: 64
Example 7: Functional Testing of Muteins Binding to P. aeruginosa
Siderophores; Inhibition of Iron Uptake
[0307] To determine the functional iron uptake inhibition in living
bacteria, a dose range concentration of the lipocalin muteins
binding to P. aeruginosa siderophore are incubated for 1 hour with
100 nM radioactive iron loaded siderophore in a Tris.HCl 50 mM pH
8.0 buffer before being incubated for 30 minutes with bacteria at a
final concentration of OD=1 at 595 nm in a 96 well plate.
Subsequently bacteria are filtered with a cell harvester through a
96 well plate GF/B filter preincubated with a Poly Ethylene Imine
solution at 5% and washed 3 times with Tris buffer. After filtering
and drying, 30 .mu.l of scintillant cocktail are added in each
filter well before counting. To iron load pyoverdine, siderophore
is incubated for 15 minutes with 55Fe--Cl3 in Tris buffer with a 4
to 1 ratio of pyoverdine and iron in a 200 .mu.M final solution.
For loading pyochelin with radioactive iron, a 40 .mu.l solution of
55FeCl3 at 0.25 mM in HCl 0.5 N is added to a methanol solution of
pyochelin at 1 mM. After a 15 minutes incubation time, 940 .mu.l
Tris HCl 50 mM pH 8.0 is added to obtain a 20 .mu.M 55Fe-Pch
solution with a 2 to 1 ratio between pyochelin and iron. The
bacteria are prepared as follow: 10 ml of an overnight culture in
Mueller Hinton Medium inoculated with an isolated clone is
centrifuged and the washed pellet is resuspended in 25 ml of
succinate medium and incubated under shaking for 2 hours. In
parallel, 20 ml of Mueller Hinton Medium are inoculated with 5 ml
of the overnight culture and incubated under shaking for 2 hours to
be used as background iron uptake level. The 25 ml bacteria
cultures are then centrifuged and washed with the corresponding
medium before the pellet is resuspended in Tris.HCL 50 mM pH8.0
buffer and the OD at 595 nm measured to have a final concentration
in the assay of OD=1.
[0308] Percentage of incorporation is calculated for each
concentration point and the inhibition is calculated with in-house
software. For this calculation, the maximum level of iron uptake is
based on the value obtained in Minimum Succinate Medium without any
lipocalin mutein, and the background value is obtained in the rich
Mueller Hinton Medium where the siderophore receptor is not
expressed.
TABLE-US-00010 TABLE 4 Lipocalin muteins block iron uptake of P.
aeruginosa as exemplarily shown for lipocalin muteins SEQ ID NO:
16, 37, 53 and 62. SEQ ID Iron uptake IC50: nM Pvd I s Pvd I sa Pvd
I aKG SEQ ID NO: 16 121 123 183 Pvd II s Pvd II sa Pvd II aKG SEQ
ID NO: 37 118 107 51 Pvd III s Pvd III sa Pvd III aKG SEQ ID NO: 53
74 32 8 Pch SEQ ID NO: 62 54
Example 8: Functional Testing of Muteins Binding to P. aeruginosa
Siderophores; Growth Inhibition
[0309] Bacterial growth inhibition is determined by incubating the
muteins binding to P. aeruginosa siderophores in the Chelex treated
Succinate Medium complemented with a Trace Element Solution and 0.1
mg/ml BSA with a MS bacterial culture diluted at a final OD of 0.05
at 595 nm in a black 96 well plate with transparent bottom. The
plate is incubated over night at 37.degree. C. with an every 20
minutes shaking and OD reading at 595 nm in an IEMS Reader MF from
Thermo Labsystem. Growth inhibition is exemplarily shown for a Pvd
I strain and Pvd I specific mutein SEQ ID NO: 16 in FIG. 4A, for a
Pvd II strain and Pvd II specific mutein SEQ ID NO: 19, and SEQ ID
NO: 36 in FIG. 4B, for a Pvd III strain and Pvd III specific mutein
SEQ ID NO: 53 in FIG. 4C and for a Pvd I knock-out (.DELTA.pvdA)
strain relying on pyochelin for iron uptake to grow and pyochelin
specific mutein SEQ ID NO: 62 in FIG. 4D. Control is bacterial
growth without lipocalin mutein.
Example 9: Stability Assessment of Muteins
[0310] To determine melting temperatures as a general indicator for
overall stability, siderophore-specific muteins (SEQ ID NOs: 13-18;
26, 31-36; 47-53; 58-62) at a protein concentration of 1 mg/ml in
PBS (Gibco) were scanned (25-100.degree. C.) at 1.degree. C./min
using a capillary nanoDSC instrument (CSC 6300, TA Instruments).
The melting temperature (Tm) was calculated from the displayed
thermogram using the integrated Nano Analyze software.
[0311] The resulting melting temperatures as well as the onset of
melting for the lipcalin muteins (SEQ ID NOs: 13-18; 26, 31-36;
47-53; 58-62) are listed in Tables 5A-D below. For all Pvd groups
as well as for pch lipocalin muteins with Tms in the range of
70.degree. C., best lipocalin mutein for each Pvd type and pch
ranging from 68 to 74.degree. C., could be selected indicating good
stability of the molecules.
TABLE-US-00011 TABLE 5A Tm and onset of melting as determined by
nanoDSC of Pvd I specific lipocalin muteins nanoDSC SEQ ID Tm
.degree. C. onset SEQ ID NO: 13 59 51 SEQ ID NO: 14 61 51 SEQ ID
NO: 15 68 59 SEQ ID NO: 16 69 60 SEQ ID NO: 17 61 53 SEQ ID NO: 18
61 54
TABLE-US-00012 TABLE 5B Tm and onset of melting as determined by
nanoDSC of Pvd II specific lipocalin muteins nanoDSC SEQ ID Tm
.degree. C. onset SEQ ID NO: 26 65 58 SEQ ID NO: 31 67 60 SEQ ID
NO: 32 64 56 SEQ ID NO: 33 67 61 SEQ ID NO: 34 67 56 SEQ ID NO: 35
71 63 SEQ ID NO: 36 70 61
TABLE-US-00013 TABLE 5C Tm and onset of melting as determined by
nanoDSC of Pvd III specific lipocalin muteins nanoDSC SEQ ID Tm
.degree. C. onset SEQ ID NO: 47 62 53 SEQ ID NO: 48 64 55 SEQ ID
NO: 49 59 50 SEQ ID NO: 50 61 52 SEQ ID NO: 51 62 53 SEQ ID NO: 52
59 49 SEQ ID NO: 53 68 59
TABLE-US-00014 TABLE 5D Tm and onset of melting as determined by
nanoDSC of pch specific lipocalin muteins nanoDSC SEQ ID Tm
.degree. C. onset SEQ ID NO: 58 63 51 SEQ ID NO: 59 60 54 SEQ ID
NO: 60 68 56 SEQ ID NO: 61 69 63 SEQ ID NO: 62 74 63
[0312] To assess storage and freeze/thaw stability muteins at a
conc. of 1 mg/ml in PBS were incubated for 1 week at 37.degree. C.
or underwent three freeze/thaw cycles. Active mutein was measured
in a quantitative ELISA setting. Monomeric protein was measured in
an analytical size exclusion chromatography. Exemplary data for SEQ
ID NO: 16, 36, 53, 62 are shown in Table 6.
[0313] For assaying protein activity the following ELISA was
applied: A 384-well plate suitable for fluorescence measurements
(Greiner FLUOTRAC.TM. 600, black flat bottom, high-binding) was
coated with 20 .mu.L of Neutravidin (Thermo Scientific) at a
concentration of 5 .mu.g/ml in PBS overnight at 4.degree. C. After
washing, the Neutravidin-coated wells were blocked with 100 .mu.l
blocking buffer (2% w/v BSA in PBS containing 0.1% v/v Tween-20)
for 1 h. After washing again, 20 .mu.l of biotinylated and iron
loaded pyoverdin I succinyl, pyoverdin II succinyl, pyoverdin III
succinyl or biotinylated pyocheline at a concentration of 1
.mu.g/ml in blocking buffer were added. The plate was washed and 20
.mu.l of appropriately diluted protein standard, unstressed
reference sample or stressed sample was transferred to the ELISA
plate and incubated. To quantitate plate-bound protein, the ELISA
plate was washed, residual supernatants were discarded and 20 .mu.l
HRP-labeled anti-hNGAL antibody was added at a predetermined
optimal concentration in blocking buffer and incubated. After
washing, 20 .mu.l fluorogenic HRP substrate (QuantaBlu, Pierce) was
added to each well, and the reaction was allowed to proceed for
20-30 minutes. The fluorescence intensity of every well on the
plate was read using a fluorescence microplate reader (Tecan).
[0314] Unless otherwise stated all incubation steps were performed
at for 1 h at room temperature and after each incubation step the
plate was washed with 100 .mu.l PBS-T buffer (PBS, 0.05% Tween 20)
for five times using a Biotek ELx405 select CW washer.
[0315] For the ELISA described above, a calibration curve including
11 dilutions typically ranging from 0.008-500 ng/mL was prepared
and three different, independent dilutions within the linear range
of the calibration curve were prepared for each sample. Blocking
buffer optionally supplemented with 1% human or murine plasma was
used for the dilutions.
[0316] The calibration curve was fit using a 4 Parameter Logistic
(4PL) nonlinear regression model and used to calculate active
protein concentrations for the tested samples. The determined
active protein concentrations were referenced against an unstressed
sample stored at the same concentration and in the same matrix.
[0317] Analytical size exclusion chromatography was performed on an
Agilent HPLC system with two Superdex 75 5/150 GL columns (GE
Healthcare) in a row using PBS (Gibco) as an eluent at a flow rate
of 0.3 mL/min.
[0318] To assess storage stability in plasma muteins at a conc. of
0.5 mg/ml were incubated for 1 week at 37.degree. C. in human,
mouse and rat plasma. Active mutein was measured in a quantitative
ELISA setting as described.
[0319] All tested lipocalin muteins proved to be stable under all
tested conditions.
TABLE-US-00015 TABLE 6 Stability after 3 freeze/thaw cycles (F/T);
1 week storage in PBS at 37.degree. C. and 1 week storage in human
(hu), mouse (mu) or rat plasma assessed by recovery of activity in
qELISA and monomer content in analytical SEC: stable in qELISA =
100 +/- 15%; stable in aSEC = 100 +/- 5% (recovery of monomer peak
area compared to non- stressed reference sample); for all samples
including references a monomer content of 100 area percent has been
detected. 1 week hu 1 week mu 3xF/T, -20.degree. C. 1 mg/ml 1 week
PBS, 37.degree. C., 1 mg/ml plasma, plasma, 1 week rat % recovery
of % monomer in % recovery of % monomer 37.degree. C. 37.degree. C.
plasma, 37.degree. C. Mutein siderophore activity in qELISA aSEC
activity in qELISA in aSEC % recovery of activity in qELISA SEQ ID
NO: 16 Pvd I 102 98 86 98 86 100 100 SEQ ID NO: 36 Pvd II 99 101
104 98 93 91 110 SEQ ID NO: 53 Pvd III 98 99 107 102 92 83 101 SEQ
ID NO: 62 pch 107 100 95 104 97 102 95
Example 10: In Vivo Potency of Lipocalin Muteins in Mouse Model
[0320] The prophylactic effect of SEQ ID NO: 19 following
intravenous (i.v.) administration in a P. aeruginosa-induced
pulmonary infection in mice was studied.
[0321] SEQ ID NO: 19 was administered 1 hour before infection and
at time of infection. Lung bacteria load was evaluated 24 h after
infection.
[0322] The strain used in this study was P. aeruginosa (ATCC27853).
Starting from P. aeruginosa stored at -80.degree. C. in PBS/15%
Glycerol, an overnight culture was conducted at 37.degree. C. under
shaking in Mueller-Hinton broth, and followed by additional
subculture (100 .mu.l overnight culture+100 ml of MHB) until end of
logarithmic phase of growth. The culture was washed twice and
resuspended in phosphate-buffer saline before to be frozen at 1E+09
CFU/ml. For each experiment a fresh vial was thawed and inoculum
verified by viable counts.
[0323] 7 to 8 weeks-old Male Swiss mice (5 animals/group) purchased
from Janvier laboratories, (Route des ch nes secs, 53940 Le Genest
Saint lie, France), were allowed at least 5 days acclimatization
prior to use. Animals were maintained at temperature of
22.+-.2.degree. C. with relative humidity of 40-70% and 12-15 air
fresh changes/hour. Light cycle 12/12 hours: light 7 a.m. to 7 p.m.
(normal cycle). Temperature and relative humidity derivations are
recorded continuously. Animals were housing 5 per cages and they
allowed access to water and standard diet (AO4 C standard diet
(SAFE)) ad libitum. All experiments were performed with approval of
the ethic committee of Sanofi R&D (CEPAL).
[0324] Lung infection was Induced by intranasal challenge of male
Swiss mice with 1.E+07 CFU/mouse of P. aeruginosa in 50 .mu.l NaCl
0.9%.
[0325] SEQ ID NO: 19 at concentrations of 200, 400, 1000 or 2000
.mu.g/mouse was administered 1 h before infection and at time of
infection, with i.v. bolus.
[0326] Twenty four hours after infection, animals were euthanized
and bacterial count from lung homogenates were determined and
expressed in log 10 CFU/ml as mean.+-.sem.
[0327] Statistical analysis was performed using SAS v9.2. The Excel
software 2003 was used for figure presentations. Comparisons on SEQ
ID NO: 19 doses versus vehicle were evaluated with a one-way
analysis of variance followed by Dunnett's test (ZAR J. H.,
Biostatistical Analysis , Prentice Hall International Editions,
4eme edition, 1999; C. W. Dunnett, "A multiple comparison procedure
for comparing several treatments with a control", J. Amer. Statist.
Assoc., 50 (1955), pp. 1096-1121, 1955).
[0328] In a P. aeruginosa-induced lung infection model in mice, SEQ
ID NO: 19 was administrated 1 hour before and at time of bacteria
challenge and SEQ ID NO: 19 prevented the development of infection
in mice in a dose-dependent manner. A significant prevention effect
was observed for SEQ ID NO: 19 starting at 200 .mu.g/mouse, with a
maximal effect at 2000 .mu.g/mouse.
Example 11: Crystallisation
[0329] To determine the three dimensional structure of SEQ ID NO:
31 protein in complex with Pvd-Fe the following procedure was
applied.
[0330] The protein sequence depicted in FIG. 6 was cloned in the
pET-24a plasmid and expressed as N-terminally tagged
6.fwdarw.His-TEV protease recognition site construct.
[0331] The plasmid was used to transform BL21(DE3) Star E. coli
cells and the resulted clones were inoculated in Overnight Express
Instant TB Medium (Novagen) and the cells were harvested after 47
hours of incubation at 18.degree. C. with 200 RPM agitation at
final OD600 4.7. The cell pellet was resuspended in buffer
containing 500 mM NaCl, 10 mM Imidazole, 1 mM MgCl.sub.2, 1 mM
TCEP, 5% glycerol and 20 mM Tris pH 7.4 and lysed by standard
ultra-sonication procedure. The resulted extract was cleared by low
speed centrifugation and supernatant was filtered throw 22 nm
membrane before loading to Ni NTA (Qiagen) 5 ml column
pre-equilibrated with 100 mM NaCl, 10 mM Imidazole, 100 mM HEPES pH
8 buffer. The protein was eluted by linear gradient of imidazole 10
mM to 300 mM and further dialyzed overnight to 100 mM NaCl, 10 mM
Imidazole, 100 mM HEPES pH 8 buffer. The protein was concentrated
to 20 mg/ml and loaded to Gel filtration Superdex 75 column (GE).
The resulted protein was dialyzed to 100 mM NaCl, 10 mM HEPES pH 8
buffer overnight in the presence of TEV protease (1/50 ratio) to
remove 6.fwdarw.His N-terminal tag following by negative Ni NTA
purification step as described above to separate the cleaved
protein. Final protein was concentrated to 12 mg/ml in 100 mM NaCl,
50 mM HEPES pH 7.5 aliquoted, snap frozen in liquid nitrogen and
stored at -80.degree. C. for further use.
[0332] For crystallization the protein was incubated with 10.times.
times higher molar concentration of Pvd-Fe overnight and plated for
crystallization screening carried out in SBS format plates where
100 nL protein drops were mixed with 100 nL of crystallization
screening solution in vapor diffusion sitting drops format
experiments at 20.degree. C. and 4.degree. C. A number of
crystallization hits were detected and crystallization conditions
were further optimized in order to obtain well diffracting x-ray
quality crystals.
[0333] The crystals diffraction quality was assessed using
synchrotron x-ray source and the best diffracting crystals were
obtained under 20% PEG3350 and 0.2M LiSO4 conditions at 20.degree.
C. The best crystals were cryoprotected by increasing PEG3350
concentration to 35% than snap frozen in liquid nitrogen and 1.8
.ANG. data set was collected at 100K temperature.
[0334] X-ray data were processed by MOSFLM and the protein
structure was determined by molecular replacement method using pdb
1 LKE as a search model and the structural model was further
refined to Rfree=0.233-R=0.200 quality in P41212 with 2 ternary
protein complexes per asymmetric unit.
[0335] The protein structure presents classical lipocalin scaffold
with Pvd-Fe bound to both mutein proteins present in the asymmetric
unit, FIG. 7. The amino acid residues involved in the Pvd-Fe
binding analysed and presented on FIG. 8. The oxygens of the Pvd
directly binding Fe are identified and presented on FIG. 9.
[0336] The present invention pertains to a polypeptide having
binding specificity for pyoverdine type I, II, III or pyochelin,
wherein the polypeptide comprises an hNGAL mutein that binds
pyoverdine type I. II, III or pyochelin with detectable
affinity.
[0337] In one embodiment the hNGAL mutein comprises a mutated amino
acid residue at one or more positions corresponding to positions
28, 34, 36, 39-42, 44-47, 49, 52, 54-55, 65, 68, 70, 72-75, 77,
79-81, 87, 96, 100, 103, 106, 108, 123, 125, 127, 132, 134, 141 and
145 of the linear polypeptide sequence of the mature hNGAL (SEQ ID
NO: 1).
[0338] In another embodiment said mutein is capable of binding
pyoverdine type I complexed with iron with a K.sub.D of about 20 nM
or lower when measured by Biacore T200 instrument in an assay
essentially described in Example 6.
[0339] In another embodiment said hNGAL mutein is capable of
binding Pvd type I succinyl, Pvd type I succinamid and Pvd type I
a-ketoglutaryl with and without complexed iron, with an affinity
measured by an IC50 value of about 200 nM or lower, when measured
in an ELISA assay essentially described in Example 5.
[0340] In another embodiment the hNGAL mutein is capable of
inhibiting iron uptake mediated by pyoverdine type I with an IC50
value of about 150 nM or lower in a competition ELISA format
essentially described in Example 7.
[0341] In another embodiment the hNGAL mutein is capable of
inhibiting bacterial growth of Pvd I strain in an assay essentially
described in Example 8.
[0342] In another embodiment the hNGAL mutein comprises a mutated
amino acid residue at one or more positions corresponding to
positions 28, 36, 39-41, 46, 49, 52, 54-55, 59, 65, 68, 70, 72-75,
77, 79-81, 87, 96, 100, 103, 106, 125, 127, 132, 134 and 136 of the
linear polypeptide sequence of the mature hNGAL (SEQ ID NO: 1).
[0343] In another embodiment the amino acid sequence of the hNGAL
mutein comprises at least one of the following mutated amino acid
residues in comparison with the linear polypeptide sequence of the
mature hNGAL: Leu 36.fwdarw.Asn, Thr, Val, Trp or Phe; Ala
40.fwdarw.Gly, Asn, Thr or Phe; Ile 41.fwdarw.Arg, Ala, Thr, Phe or
Trp; Gln 49.fwdarw.Ile, Leu, Vla, Ala or Pro; Tyr 52.fwdarw.Met,
Trp or Pro; Ser 68.fwdarw.Asp, Vla or Glu; Leu 70.fwdarw.Gln, Trp,
Asp or Thr; Arg 72.fwdarw.Trp, Ala, Ser, Leu, Pro or Glu; Lys
73.fwdarw.Asp, Leu, Ala, Glu or Asn; Asp 77.fwdarw.Arg, Leu, Tyr,
Ser, Gln, Thr, Ile or Asn; Trp 79.fwdarw.Gln, Asp, Ser, Arg, Met or
Glu; Arg 81.fwdarw.Gln, Gly, Ile, Glu, His or Asp; Asn
96.fwdarw.His, Ile, Gly, Tyr or Asp; Tyr 100.fwdarw.Lys, Glu, Asn,
Ser, Phe or Tyr; Leu 103.fwdarw.Lys, Pro, Gln, His, Asp, Tyr, Glu,
Trp or Asn; Tyr 106.fwdarw.His, Gln or Phe; Lys 125.fwdarw.Arg,
Ser, Trp, Tyr, Val or Gly; Ser 127.fwdarw.Trp, Asn, Ala, Thr, Tyr,
His, Ile, Val or Asp; Tyr 132.fwdarw.Trp, Asn, Gly or Lys; and Lys
134.fwdarw.Asn, His, Trp, Gly, Gln or Asp.
[0344] In another embodiment the amino acid sequence of the hNGAL
mutein comprises the following substitution in comparison with the
linear polypeptide sequence of the mature hNGAL: Gln 28.fwdarw.His;
Lys 46.fwdarw.Glu; Thr 54.fwdarw.Vla or Ala; Ile 55.fwdarw.Vla; Lys
59.fwdarw.Arg; Asn 65.fwdarw.Asp or Gln; Ile 80.fwdarw.Thr; Cys
87.fwdarw.Ser or Asn; and Thr 136.fwdarw.Ala.
[0345] In another embodiment the hNGAL mutein comprises at least 1,
2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20
or 21 mutated amino acid residues at the sequence positions 28, 36,
39-41, 46, 49, 52, 54-55, 59, 65, 68, 70, 72-75, 77, 79-81, 87, 96,
100, 103, 106, 125, 127, 132, 134 and 136 of the linear polypeptide
sequence of the mature human NGAL (SEQ ID NO: 1).
[0346] In another embodiment the hNGAL mutein comprises one of the
following sets of amino acid substitutions in comparison with the
linear polypeptide sequence of the mature hNGAL:
[0347] Gln 28.fwdarw.His; Leu 36.fwdarw.Asn; Ala 40.fwdarw.Gly; Ile
41.fwdarw.Trp; Gln 49.fwdarw.Ile; Tyr 52.fwdarw.Met; Ser
68.fwdarw.Val; Leu 70.fwdarw.Gln; Arg 72.fwdarw.Trp; Lys
73.fwdarw.Asp; Asp 77.fwdarw.Leu; Trp 79.fwdarw.Gln; Arg
81.fwdarw.Gln; Cys 87.fwdarw.Ser; Asn 96.fwdarw.His; Tyr
100.fwdarw.Lys; Leu 103.fwdarw.His; Tyr 106.fwdarw.His; Lys
125.fwdarw.Arg; Ser 127.fwdarw.Trp; Tyr 132.fwdarw.Trp; Lys
134.fwdarw.Asp;
[0348] Gln 28.fwdarw.His; Leu 36.fwdarw.Thr; Ala 40.fwdarw.Gly; Ile
41.fwdarw.Phe; Gln 49.fwdarw.Leu; Tyr 52.fwdarw.Trp; Leu
70.fwdarw.Trp; Arg 72.fwdarw.Ala; Lys 73.fwdarw.Leu; Asp
77.fwdarw.Tyr; Trp 79.fwdarw.Asp; Arg 81.fwdarw.Gly; Cys
87.fwdarw.Ser; Asn 96.fwdarw.Ile; Tyr 100.fwdarw.Glu; Leu
103.fwdarw.His; Tyr 106.fwdarw.Gln; Lys 125.fwdarw.Trp; Ser
127.fwdarw.Asn; Tyr 132.fwdarw.Asn; Lys 134.fwdarw.Gln;
[0349] Gln 28.fwdarw.His; Leu 36.fwdarw.Trp; Ala 40.fwdarw.Thr; Ile
41.fwdarw.Thr; Gln 49.fwdarw.Pro; Tyr 52.fwdarw.Pro; Ser
68.fwdarw.Asp; Leu 70.fwdarw.Gln; Arg 72.fwdarw.Ser; Lys
73.fwdarw.Glu; Asp 77.fwdarw.Ser; Trp 79.fwdarw.Ser; Arg
81.fwdarw.Ile; Cys 87.fwdarw.Ser; Asn 96.fwdarw.Gly; Tyr
100.fwdarw.Asn; Leu 103.fwdarw.Lys; Tyr 106.fwdarw.His; Lys
125.fwdarw.Tyr; Ser 127.fwdarw.Ala; Tyr 132.fwdarw.Gly; Lys
134.fwdarw.Asn;
[0350] Gln 28.fwdarw.His; Leu 36.fwdarw.Phe; Ala 40.fwdarw.Asn; Ile
41.fwdarw.Arg; Gln 49.fwdarw.Pro; Tyr 52.fwdarw.Met; Ser
68.fwdarw.Asp; Leu 70.fwdarw.Thr; Arg 72.fwdarw.Glu; Lys
73.fwdarw.Ala; Asp 77.fwdarw.Arg; Trp 79.fwdarw.Arg; Arg
81.fwdarw.Ile; Cys 87.fwdarw.Ser; Asn 96.fwdarw.Tyr; Tyr
100.fwdarw.Lys; Leu 103.fwdarw.Pro; Tyr 106.fwdarw.Phe; Lys
125.fwdarw.Ser; Ser 127.fwdarw.Thr; Tyr 132.fwdarw.Trp; Lys
134.fwdarw.Gly;
[0351] Gln 28.fwdarw.His; Ala 40.fwdarw.Gly; Ile 41.fwdarw.Trp; Gln
49.fwdarw.Val; Tyr 52.fwdarw.Met; Ser 68.fwdarw.Val; Leu
70.fwdarw.Asp; Arg 72.fwdarw.Glu; Lys 73.fwdarw.Leu; Asp
77.fwdarw.Arg; Trp 79.fwdarw.Met; Arg 81.fwdarw.Glu; Cys
87.fwdarw.Ser; Asn 96.fwdarw.Asp; Tyr 100.fwdarw.Phe; Leu
103.fwdarw.Trp; Tyr 106.fwdarw.Gln; Lys 125.fwdarw.Gly; Ser
127.fwdarw.Tyr; Tyr 132.fwdarw.Trp; Lys 134.fwdarw.His;
[0352] Gln 28.fwdarw.His; Leu 36.fwdarw.Val; Ala 40.fwdarw.Phe; Ile
41.fwdarw.Phe; Gln 49.fwdarw.Ala; Tyr 52.fwdarw.Pro; Ser
68.fwdarw.Glu; Leu 70.fwdarw.Trp; Arg 72.fwdarw.Leu; Lys
73.fwdarw.Asn; Asp 77.fwdarw.Gln; Trp 79.fwdarw.Glu; Arg
81.fwdarw.His; Cys 87.fwdarw.Ser; Asn 96.fwdarw.Tyr; Leu
103.fwdarw.Tyr; Tyr 106.fwdarw.His; Lys 125.fwdarw.Val; Ser
127.fwdarw.His; Tyr 132.fwdarw.Lys; Lys 134.fwdarw.Trp;
[0353] Gln 28.fwdarw.His; Leu 36.fwdarw.Trp; Ala 40.fwdarw.Thr; Ile
41.fwdarw.Thr; Gln 49.fwdarw.Pro; Tyr 52.fwdarw.Pro; Ser
68.fwdarw.Asp; Leu 70.fwdarw.Gln; Arg 72.fwdarw.Ser; Lys
73.fwdarw.Glu; Asp 77.fwdarw.Ser; Trp 79.fwdarw.Ser; Ile
80.fwdarw.Thr; Arg 81.fwdarw.Ile; Cys 87.fwdarw.Ser; Asn
96.fwdarw.Gly; Tyr 100.fwdarw.Ser; Leu 103.fwdarw.Gln; Tyr
106.fwdarw.His; Lys 125.fwdarw.Tyr; Ser 127.fwdarw.Ile; Tyr
132.fwdarw.Gly; Lys 134.fwdarw.Asn;
[0354] Gln 28.fwdarw.His; Leu 36.fwdarw.Trp; Ala 40.fwdarw.Thr; Ile
41.fwdarw.Thr; Gln 49.fwdarw.Pro; Tyr 52.fwdarw.Pro; Ser
68.fwdarw.Asp; Leu 70.fwdarw.Gln; Arg 72.fwdarw.Ser; Lys
73.fwdarw.Asp; Asp 77.fwdarw.Ser; Trp 79.fwdarw.Ser; Arg
81.fwdarw.Ile; Cys 87.fwdarw.Ser; Asn 96.fwdarw.Gly; Tyr
100.fwdarw.Asn; Leu 103.fwdarw.Asp; Tyr 106.fwdarw.His; Lys
125.fwdarw.Tyr; Ser 127.fwdarw.Val; Tyr 132.fwdarw.Gly; Lys
134.fwdarw.Asn;
[0355] Gln 28.fwdarw.His; Leu 36.fwdarw.Trp; Ala 40.fwdarw.Thr; Ile
41.fwdarw.Thr; Gln 49.fwdarw.Pro; Tyr 52.fwdarw.Pro; Ser
68.fwdarw.Asp; Leu 70.fwdarw.Gln; Arg 72.fwdarw.Ser; Lys
73.fwdarw.Glu; Asp 77.fwdarw.Thr; Trp 79.fwdarw.Ser; Arg
81.fwdarw.Ile; Cys 87.fwdarw.Ser; Asn 96.fwdarw.Asp; Tyr
100.fwdarw.Asn; Leu 103.fwdarw.Glu; Tyr 106.fwdarw.His; Lys
125.fwdarw.Tyr; Ser 127.fwdarw.Asp; Tyr 132.fwdarw.Gly; Lys
134.fwdarw.Asn;
[0356] Gln 28.fwdarw.His; Leu 36.fwdarw.Trp; Ala 40.fwdarw.Thr; Ile
41.fwdarw.Thr; Gln 49.fwdarw.Pro; Tyr 52.fwdarw.Pro; Ser
68.fwdarw.Asp; Leu 70.fwdarw.Gln; Arg 72.fwdarw.Ser; Lys
73.fwdarw.Asp; Asp 77.fwdarw.Val; Trp 79.fwdarw.Ser; Arg
81.fwdarw.Ile; Cys 87.fwdarw.Ser; Asn 96.fwdarw.Gly; Tyr
100.fwdarw.Asn; Leu 103.fwdarw.Asn; Tyr 106.fwdarw.His; Lys
125.fwdarw.Tyr; Ser 127.fwdarw.Vla; Tyr 132.fwdarw.Gly; Lys
134.fwdarw.Asn;
[0357] Gln 28.fwdarw.His; Ala 40.fwdarw.Gly; Ile 41.fwdarw.Trp; Gln
49.fwdarw.Leu; Tyr 52.fwdarw.Met; Ser 68.fwdarw.Val; Leu
70.fwdarw.Asp; Arg 72.fwdarw.Glu; Lys 73.fwdarw.Leu; Asp
77.fwdarw.Arg; Trp 79.fwdarw.Met; Arg 81.fwdarw.Glu; Cys
87.fwdarw.Ser; Asn 96.fwdarw.Asp; Tyr 100.fwdarw.Ser; Leu
103.fwdarw.Trp; Tyr 106.fwdarw.Gln; Lys 125.fwdarw.Gly; Ser
127.fwdarw.Tyr; Tyr 132.fwdarw.Trp; Lys 134.fwdarw.His;
[0358] Gln 28.fwdarw.His; Leu 36.fwdarw.Trp; Ala 40.fwdarw.Thr; Ile
41.fwdarw.Thr; Gln 49.fwdarw.Pro; Tyr 52.fwdarw.Pro; Thr
54.fwdarw.Val; Ser 68.fwdarw.Asp; Leu 70.fwdarw.Gln; Arg
72.fwdarw.Ser; Lys 73.fwdarw.Glu; Lys 75.fwdarw.Glu; Asp
77.fwdarw.Ser; Trp 79.fwdarw.Ser; Ile 80.fwdarw.Thr; Arg
81.fwdarw.Ile; Cys 87.fwdarw.Ser; Asn 96.fwdarw.Gly; Tyr
100.fwdarw.Ser; Leu 103.fwdarw.Gln; Tyr 106.fwdarw.His; Lys
125.fwdarw.Tyr; Ser 127.fwdarw.Thr; Tyr 132.fwdarw.Gly: Lys
134.fwdarw.Asn;
[0359] Gln 28.fwdarw.His; Ala 40.fwdarw.Gly; Ile 41.fwdarw.Trp; Lys
46.fwdarw.Glu; Gln 49.fwdarw.Leu; Tyr 52.fwdarw.Met; Thr
54.fwdarw.Ala; Ile 55.fwdarw.Vla; Lys 59.fwdarw.Arg; Ser
68.fwdarw.Val; Leu 70.fwdarw.Asp; Arg 72.fwdarw.Glu; Lys
73.fwdarw.Leu; Lys 74.fwdarw.Glu; Lys 75.fwdarw.Glu; Asp
77.fwdarw.Arg; Trp 79.fwdarw.Met; Ile 80.fwdarw.Thr; Arg
81.fwdarw.Glu; Ser 87.fwdarw.Asn; Asn 96.fwdarw.Asp; Tyr
100.fwdarw.sER; Leu 103.fwdarw.Trp; Tyr 106.fwdarw.Gln; Lys
125.fwdarw.Gly; Ser 127.fwdarw.Tyr; Tyr 132.fwdarw.Trp; Lys
134.fwdarw.His;
[0360] Leu 36.fwdarw.Trp; Asn 39.fwdarw.Asp; Ala 40.fwdarw.Thr; Ile
41.fwdarw.Thr; Gln 49.fwdarw.Pro; Tyr 52.fwdarw.Pro; Thr
54.fwdarw.Val; Asn 65.fwdarw.Asp; Ser 68.fwdarw.Asp; Leu
70.fwdarw.Gln; Arg 72.fwdarw.Ser; Lys 73.fwdarw.Glu; Lys
75.fwdarw.Glu; Asp 77.fwdarw.Ser; Trp 79.fwdarw.Ser; Ile
80.fwdarw.Thr; Arg 81.fwdarw.Ile; Cys 87.fwdarw.Ser; Asn
96.fwdarw.Gly; Tyr 100.fwdarw.Ser; Leu 103.fwdarw.Gln; Tyr
106.fwdarw.His; Lys 125.fwdarw.Tyr; Ser 127.fwdarw.Thr; Tyr
132.fwdarw.Gly; Lys 134.fwdarw.Asn; Thr 136.fwdarw.Ala;
[0361] Leu 36.fwdarw.Trp; Ala 40.fwdarw.Thr; Ile 41.fwdarw.Ala; Gln
49.fwdarw.Pro; Tyr 52.fwdarw.Pro; Thr 54.fwdarw.Val; Asn
65.fwdarw.Asp; Ser 68.fwdarw.Asp; Leu 70.fwdarw.Gln; Arg
72.fwdarw.Ser; Lys 73.fwdarw.Glu; Lys 75.fwdarw.Glu; Asp
77.fwdarw.Ser; Trp 79.fwdarw.Ser; Ile 80.fwdarw.Thr; Arg
81.fwdarw.Ile; Cys 87.fwdarw.Ser; Asn 96.fwdarw.Gly; Tyr
100.fwdarw.Ser; Leu 103.fwdarw.Gln; Tyr 106.fwdarw.His; Lys
125.fwdarw.Tyr; Ser 127.fwdarw.Thr; Tyr 132.fwdarw.Gly; Lys
134.fwdarw.Asn; Thr 136.fwdarw.Ala;
[0362] Gln 28.fwdarw.His; Ala 40.fwdarw.Gly; Ile 41.fwdarw.Trp; Lys
46.fwdarw.Glu; Gln 49.fwdarw.Leu; Tyr 52.fwdarw.Met; Thr
54.fwdarw.Ala; Ile 55.fwdarw.Vla; Lys 59.fwdarw.Arg; Asn
65.fwdarw.Asp; Ser 68.fwdarw.Val; Leu 70.fwdarw.Asp; Arg
72.fwdarw.Glu; Lys 73.fwdarw.Leu; Lys 74.fwdarw.Glu; Lys
75.fwdarw.Glu; Asp 77.fwdarw.Arg; Trp 79.fwdarw.Met; Ile
80.fwdarw.Thr; Arg 81.fwdarw.Glu; Ser 87.fwdarw.Asn; Asn
96.fwdarw.Asp; Tyr 100.fwdarw.sER; Leu 103.fwdarw.Trp; Tyr
106.fwdarw.Gln; Lys 125.fwdarw.Gly; Ser 127.fwdarw.Tyr; Tyr
132.fwdarw.Trp; Lys 134.fwdarw.His; or
[0363] Gln 28.fwdarw.His; Ala 40.fwdarw.Gly; Ile 41.fwdarw.Trp; Lys
46.fwdarw.Glu; Gln 49.fwdarw.Leu; Tyr 52.fwdarw.Met; Thr
54.fwdarw.Ala; Ile 55.fwdarw.Vla; Lys 59.fwdarw.Arg; Asn
65.fwdarw.Gln; Ser 68.fwdarw.Val; Leu 70.fwdarw.Asp; Arg
72.fwdarw.Glu; Lys 73.fwdarw.Leu; Lys 74.fwdarw.Glu; Lys
75.fwdarw.Glu; Asp 77.fwdarw.Arg; Trp 79.fwdarw.Met; Ile
80.fwdarw.Thr; Arg 81.fwdarw.Glu; Ser 87.fwdarw.Asn; Asn
96.fwdarw.Asp; Tyr 100.fwdarw.sER; Leu 103.fwdarw.Trp; Tyr
106.fwdarw.Gln; Lys 125.fwdarw.Gly; Ser 127.fwdarw.Tyr; Tyr
132.fwdarw.Trp; Lys 134.fwdarw.His.
[0364] In another embodiment the hNGAL mutein comprises an amino
acid sequence selected from the group consisting of SEQ ID NOs:
2-18 or a fragment or variant thereof.
[0365] In another embodiment said hNGAL mutein is capable of
binding pyoverdine type II complexed with iron with a K.sub.D of
about 20 nM or lower when measured by Biacore T200 instrument in an
assay essentially described in Example 6.
[0366] In another embodiment said hNGAL mutein is capable of
binding Pvd type II succinyl, Pvd type II succinamid and Pvd type
II a-ketoglutaryl with and without complexed iron, with an affinity
measured by an IC50 value of about 200 nM or lower, when measured
in an ELISA assay essentially described in Example 5.
[0367] In another embodiment the hNGAL mutein is capable of
inhibiting iron uptake mediated by pyoverdine type II with an IC50
value of about 150 nM or lower in a competition ELISA format
essentially described in Example 7.
[0368] In another embodiment the hNGAL mutein is capable of
inhibiting bacterial growth of Pvd II strain in an assay
essentially described in Example 8.
[0369] In another embodiment said hNGAL mutein is capable of
inhibiting growth of P. aeruginosa stains expressing pyoverdine
type II in an assay essentially described in Example 9.
[0370] In another embodiment the hNGAL mutein comprises a mutated
amino acid residue at one or more positions corresponding to
positions 28, 36, 40-41, 49, 52, 54, 65, 68, 70, 72-75, 77, 79, 81,
87, 96, 100, 103, 106, 125, 127, 132 and 134 of the linear
polypeptide sequence of the mature hNGAL (SEQ ID NO: 1).
[0371] In another embodiment the amino acid sequence of the hNGAL
mutein comprises at least one of the following mutated amino acid
residues in comparison with the linear polypeptide sequence of the
mature hNGAL: Leu 36.fwdarw.Asn, Ile or Val; Ala 40.fwdarw.Glu,
Gly, Asn, Thr or His; Ile 41.fwdarw.Arg, Val or Thr; Gln
49.fwdarw.Gly, Ala or Pro; Tyr 52.fwdarw.Asn, Gly, Trp or Pro; Ser
68.fwdarw.Asp, Arg or Glu; Leu 70.fwdarw.Arg or Trp; Arg
72.fwdarw.His, Ile, Ala, Ser or Gly; Lys 73.fwdarw.Asn, Met, Pro,
Phe, Gln or Arg; Asp 77.fwdarw.His, Ile, Met, Lys, Gly or Asn; Trp
79.fwdarw.Ser, Tyr, Ala, Asp, Phe or Trp; Arg 81.fwdarw.Glu, Ser,
Tyr or Asp; Asn 96.fwdarw.Met, Ile, Arg, Asp, Lys, Asn or Ala; Tyr
100.fwdarw.Lys, Glu, Asn, Ser, Phe or Tyr; Leu 103.fwdarw.Thr, Ile,
Gln, Gly, Met, His, Trp or Val; Tyr 106.fwdarw.Met, Gln, Ala, Ile,
Asn, Gly, Met or Phe; Lys 125.fwdarw.Ala, Ile or Asn; Ser
127.fwdarw.Lys, Arg, Ser, Met, Asp or Asn; Tyr 132.fwdarw.Met, Phe,
Asn, Ala, Ile, Gly or Val; and Lys 134.fwdarw.Trp or Tyr.
[0372] In another embodiment the amino acid sequence of the hNGAL
mutein comprises the following substitution in comparison with the
linear polypeptide sequence of the mature hNGAL: Gln 28.fwdarw.His;
Thr 54.fwdarw.Ala; Asn 65.fwdarw.Asp or Gln and Cys
87.fwdarw.Ser.
[0373] In another embodiment the hNGAL mutein comprises at least 1,
2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20
or 21 mutated amino acid residues at the sequence positions 28, 36,
40-41, 49, 52, 54, 65, 68, 70, 72-75, 77, 79, 81, 87, 96, 100, 103,
106, 125, 127, 132 and 134 of the linear polypeptide sequence of
the mature human NGAL (SEQ ID NO: 1).
[0374] In another embodiment the hNGAL mutein comprises one of the
following sets of amino acid substitutions in comparison with the
linear polypeptide sequence of the natural wildtype hNGAL:
[0375] Gln 28.fwdarw.His; Leu 36.fwdarw.Val; Ala 40.fwdarw.Glu; Ile
41.fwdarw.Val; Gln 49.fwdarw.Gly; Tyr 52.fwdarw.Pro; Ser
68.fwdarw.Glu; Leu 70.fwdarw.Arg; Arg 72.fwdarw.His; Lys
73.fwdarw.Asn; Asp 77.fwdarw.Asn; Trp 79.fwdarw.Ser; Arg
81.fwdarw.Glu; Cys 87.fwdarw.Ser; Tyr 100.fwdarw.Asn; Leu
103.fwdarw.Gln; Tyr 106.fwdarw.Met; Ser 127.fwdarw.Lys; Tyr
132.fwdarw.Gly; Lys 134.fwdarw.Trp;
[0376] Gln 28.fwdarw.His; Ala 40.fwdarw.Thr; Ile 41.fwdarw.Ile; Gln
49.fwdarw.Gly; Tyr 52.fwdarw.Asn; Ser 68.fwdarw.Asp; Leu
70.fwdarw.Arg; Arg 72.fwdarw.Ile; Lys 73.fwdarw.Met; Asp
77.fwdarw.His; Trp 79.fwdarw.Tyr; Arg 81.fwdarw.Glu; Cys
87.fwdarw.Ser; Asn 96.fwdarw.Ile; Tyr 100.fwdarw.Asn; Leu
103.fwdarw.Thr; Tyr 106.fwdarw.Gln; Lys 125.fwdarw.Ile; Ser
127.fwdarw.Arg; Tyr 132.fwdarw.Met; Lys 134.fwdarw.Trp;
[0377] Gln 28.fwdarw.His; Leu 36.fwdarw.Ile; Ala 40.fwdarw.Thr; Ile
41.fwdarw.Val; Gln 49.fwdarw.Gly; Tyr 52.fwdarw.Pro; Ser
68.fwdarw.Glu; Leu 70.fwdarw.Arg; Arg 72.fwdarw.Ala; Lys
73.fwdarw.Pro; Asp 77.fwdarw.Ile; Trp 79.fwdarw.Ser; Arg
81.fwdarw.Ser; Cys 87.fwdarw.Ser; Asn 96.fwdarw.Met; Tyr
100.fwdarw.Ser; Leu 103.fwdarw.Gly; Tyr 106.fwdarw.Ala; Lys
125.fwdarw.Lys; Tyr 132.fwdarw.Val; Lys 134.fwdarw.Trp;
[0378] Gln 28.fwdarw.His; Ala 40.fwdarw.Asn; Gln 49.fwdarw.Ala; Tyr
52.fwdarw.Pro; Ser 68.fwdarw.Glu; Leu 70.fwdarw.Arg; Arg
72.fwdarw.Ser; Lys 73.fwdarw.Gln; Asp 77.fwdarw.Met; Trp
79.fwdarw.Ala; Arg 81.fwdarw.Tyr; Cys 87.fwdarw.Ser; Asn
96.fwdarw.Arg; Tyr 100.fwdarw.Pro; Leu 103.fwdarw.Thr; Tyr
106.fwdarw.Ile; Lys 125.fwdarw.Lys; Ser 127.fwdarw.Met; Tyr
132.fwdarw.Phe; Lys 134.fwdarw.Trp;
[0379] Gln 28.fwdarw.His; Ala 40.fwdarw.His; Gln 49.fwdarw.Ala; Tyr
52.fwdarw.Pro; Ser 68.fwdarw.Glu; Leu 70.fwdarw.Asp; Arg
72.fwdarw.Gly; Lys 73.fwdarw.Arg; Asp 77.fwdarw.His; Trp
79.fwdarw.Trp; Arg 81.fwdarw.Glu; Cys 87.fwdarw.Ser; Asn
96.fwdarw.Arg; Tyr 100.fwdarw.Asp; Leu 103.fwdarw.Met; Tyr
106.fwdarw.Phe; Lys 125.fwdarw.Ala; Ser 127.fwdarw.Asp; Tyr
132.fwdarw.Asn; Lys 134.fwdarw.Trp;
[0380] Gln 28.fwdarw.His; Leu 36.fwdarw.Asn; Ala 40.fwdarw.Gly; Ile
41.fwdarw.Arg; Gln 49.fwdarw.Pro; Tyr 52.fwdarw.Trp; Ser
68.fwdarw.Arg; Leu 70.fwdarw.Trp; Arg 72.fwdarw.Asn; Lys
73.fwdarw.Gln; Asp 77.fwdarw.Lys; Trp 79.fwdarw.Asp; Arg
81.fwdarw.Glu; Cys 87.fwdarw.Ser; Asn 96.fwdarw.Asp; Tyr
100.fwdarw.Thr; Leu 103.fwdarw.Trp; Tyr 106.fwdarw.Asn; Lys
125.fwdarw.Asn; Ser 127.fwdarw.Met; Tyr 132.fwdarw.Ile; Lys
134.fwdarw.Tyr;
[0381] Gln 28.fwdarw.His; Leu 36.fwdarw.Vla; Ala 40.fwdarw.Thr; Ile
41.fwdarw.Thr; Gln 49.fwdarw.Gly; Tyr 52.fwdarw.Gly; Ser
68.fwdarw.Glu; Leu 70.fwdarw.Arg; Arg 72.fwdarw.Gly; Lys
73.fwdarw.Arg; Asp 77.fwdarw.Gly; Trp 79.fwdarw.Trp; Arg
81.fwdarw.Glu; Cys 87.fwdarw.Ser; Asn 96.fwdarw.Ala; Tyr
100.fwdarw.Trp; Leu 103.fwdarw.Ile; Tyr 106.fwdarw.Gly; Lys
125.fwdarw.Lys; Ser 127.fwdarw.Asn; Tyr 132.fwdarw.Val; Lys
134.fwdarw.Trp;
[0382] Gln 28.fwdarw.His; Leu 36.fwdarw.Val; Ala 40.fwdarw.Glu; Ile
41.fwdarw.Val; Gln 49.fwdarw.Gly; Tyr 52.fwdarw.Pro; Ser
68.fwdarw.Glu; Leu 70.fwdarw.Arg; Arg 72.fwdarw.His; Lys
73.fwdarw.Asn; Asp 77.fwdarw.Asn; Trp 79.fwdarw.Ser; Arg
81.fwdarw.Glu; Cys 87.fwdarw.Ser; Asn 96.fwdarw.Lys; Tyr
100.fwdarw.Asn; Leu 103.fwdarw.Val; Tyr 106.fwdarw.Met; Lys
125.fwdarw.Asn; Ser 127.fwdarw.Lys; Tyr 132.fwdarw.Gly; Lys
134.fwdarw.Trp;
[0383] Gln 28.fwdarw.His; Leu 36.fwdarw.Val; Ala 40.fwdarw.Thr; Ile
41.fwdarw.Val; Gln 49.fwdarw.Gly; Tyr 52.fwdarw.Pro; Ser
68.fwdarw.Glu; Leu 70.fwdarw.Arg; Arg 72.fwdarw.His; Lys
73.fwdarw.Asn; Asp 77.fwdarw.Asn; Trp 79.fwdarw.Ser; Arg
81.fwdarw.Glu; Cys 87.fwdarw.Ser; Leu 103.fwdarw.Gln; Tyr
106.fwdarw.Met; Ser 127.fwdarw.Lys; Tyr 132.fwdarw.Val; Lys
134.fwdarw.Trp;
[0384] Gln 28.fwdarw.His; Leu 36.fwdarw.Val; Ala 40.fwdarw.Thr; Ile
41.fwdarw.Val; Gln 49.fwdarw.Gly; Tyr 52.fwdarw.Pro; Ser
68.fwdarw.Glu; Leu 70.fwdarw.Arg; Arg 72.fwdarw.His; Asp
77.fwdarw.Asn; Trp 79.fwdarw.Phe; Arg 81.fwdarw.Glu; Cys
87.fwdarw.Ser; Asn 96.fwdarw.Lys; Tyr 100.fwdarw.His; Leu
103.fwdarw.Gln; Tyr 106.fwdarw.Met; Ser 127.fwdarw.Lys; Tyr
132.fwdarw.Ala; Lys 134.fwdarw.Trp;
[0385] Gln 28.fwdarw.His; Leu 36.fwdarw.Val; Ala 40.fwdarw.Gly; Ile
41.fwdarw.Val; Gln 49.fwdarw.Gly; Tyr 52.fwdarw.Pro; Ser
68.fwdarw.Glu; Leu 70.fwdarw.Arg; Arg 72.fwdarw.His; Lys
73.fwdarw.Asn; Asp 77.fwdarw.Asn; Trp 79.fwdarw.Trp; Arg
81.fwdarw.Glu; Cys 87.fwdarw.Ser; Tyr 100.fwdarw.Asn; Leu
103.fwdarw.His; Tyr 106.fwdarw.Met; Ser 127.fwdarw.Lys; Tyr
132.fwdarw.Gly; Lys 134.fwdarw.Trp;
[0386] Gln 28.fwdarw.His; Leu 36.fwdarw.Val; Ala 40.fwdarw.Thr; Ile
41.fwdarw.Ile; Gln 49.fwdarw.Gly; Tyr 52.fwdarw.Asn; Ser
68.fwdarw.Asp; Leu 70.fwdarw.Arg; Arg 72.fwdarw.Ile; Lys
73.fwdarw.Phe; Asp 77.fwdarw.His; Trp 79.fwdarw.Tyr; Arg
81.fwdarw.Asp; Cys 87.fwdarw.Ser; Leu 103.fwdarw.Met; Tyr
106.fwdarw.Gln; Lys 125.fwdarw.Ile; Ser 127.fwdarw.Arg; Tyr
132.fwdarw.Ile; Lys 134.fwdarw.Trp;
[0387] Gln 28.fwdarw.His; Leu 36.fwdarw.Val; Ala 40.fwdarw.Thr; Ile
41.fwdarw.Ile; Gln 49.fwdarw.Gly; Tyr 52.fwdarw.Asn; Ser
68.fwdarw.Asp; Leu 70.fwdarw.Arg; Arg 72.fwdarw.Ile; Lys
73.fwdarw.Arg; Asp 77.fwdarw.His; Trp 79.fwdarw.Tyr; Arg
81.fwdarw.Asp; Cys 87.fwdarw.Ser; Leu 103.fwdarw.Thr; Tyr
106.fwdarw.Gln; Lys 125.fwdarw.Ile; Ser 127.fwdarw.Arg; Tyr
132.fwdarw.Ile; Lys 134.fwdarw.Trp;
[0388] Gln 28.fwdarw.His; Leu 36.fwdarw.Val; Ala 40.fwdarw.Glu; Ile
41.fwdarw.Val; Gln 49.fwdarw.Gly; Tyr 52.fwdarw.Pro; Asn
65.fwdarw.Asp; Ser 68.fwdarw.Glu; Leu 70.fwdarw.Arg; Arg
72.fwdarw.His; Lys 73.fwdarw.Asn; Asp 77.fwdarw.Asn; Trp
79.fwdarw.Phe; Arg 81.fwdarw.Glu; Cys 87.fwdarw.Ser; Asn
96.fwdarw.Lys; Tyr 100.fwdarw.Asn; Leu 103.fwdarw.Val; Tyr
106.fwdarw.Met; Lys 125.fwdarw.Asn; Ser 127.fwdarw.Lys; Tyr
132.fwdarw.Gly; Lys 134.fwdarw.Trp;
[0389] Gln 28.fwdarw.His; Leu 36.fwdarw.Val; Ala 40.fwdarw.Glu; Ile
41.fwdarw.Val; Gln 49.fwdarw.Gly; Tyr 52.fwdarw.Pro; Asn
65.fwdarw.Gln; Ser 68.fwdarw.Glu; Leu 70.fwdarw.Arg; Arg
72.fwdarw.His; Lys 73.fwdarw.Asn; Asp 77.fwdarw.Asn; Trp
79.fwdarw.Phe; Arg 81.fwdarw.Glu; Cys 87.fwdarw.Ser; Asn
96.fwdarw.Lys; Tyr 100.fwdarw.Asn; Leu 103.fwdarw.Val; Tyr
106.fwdarw.Met; Lys 125.fwdarw.Asn; Ser 127.fwdarw.Lys; Tyr
132.fwdarw.Gly; Lys 134.fwdarw.Trp;
[0390] Gln 28.fwdarw.His; Leu 36.fwdarw.Val; Ala 40.fwdarw.Thr; Ile
41.fwdarw.Ile; Gln 49.fwdarw.Gly; Tyr 52.fwdarw.Asn; Thr
54.fwdarw.Ala; Asn 65.fwdarw.Asp; Ser 68.fwdarw.Asp; Leu
70.fwdarw.Arg; Arg 72.fwdarw.Ile; Lys 73.fwdarw.Arg; Asp
77.fwdarw.His; Trp 79.fwdarw.Tyr; Arg 81.fwdarw.Asp; Cys
87.fwdarw.Ser: Leu 103.fwdarw.Thr; Tyr 106.fwdarw.Gln; Lys
125.fwdarw.Ile; Ser 127.fwdarw.Arg; Tyr 132.fwdarw.Ile: Lys
134.fwdarw.Trp;
[0391] Gln 28.fwdarw.His; Leu 36.fwdarw.Val; Ala 40.fwdarw.Thr; Ile
41.fwdarw.Ile; Gln 49.fwdarw.Gly; Tyr 52.fwdarw.Asn; Thr
54.fwdarw.Ala; Asn 65.fwdarw.Gln; Ser 68.fwdarw.Asp; Leu
70.fwdarw.Arg; Arg 72.fwdarw.Ile; Lys 73.fwdarw.Arg; Asp
77.fwdarw.His; Trp 79.fwdarw.Tyr; Arg 81.fwdarw.Asp; Cys
87.fwdarw.Ser; Leu 103.fwdarw.Thr; Tyr 106.fwdarw.Gln; Lys
125.fwdarw.Ile; Ser 127.fwdarw.Arg; Tyr 132.fwdarw.Ile; Lys
134.fwdarw.Trp;
[0392] Leu 36.fwdarw.Val; Ala 40.fwdarw.Thr; Ile 41.fwdarw.Ile; Gln
49.fwdarw.Gly; Tyr 52.fwdarw.Asn; Thr 54.fwdarw.Ala; Asn
65.fwdarw.Asp; Ser 68.fwdarw.Asp; Leu 70.fwdarw.Arg; Arg
72.fwdarw.Ile; Lys 73.fwdarw.Arg; Asp 77.fwdarw.His; Trp
79.fwdarw.Tyr; Arg 81.fwdarw.Asp; Cys 87.fwdarw.Ser; Leu
103.fwdarw.Thr; Tyr 106.fwdarw.Gln; Lys 125.fwdarw.Ile; Ser
127.fwdarw.Arg; Tyr 132.fwdarw.Ile; Lys 134.fwdarw.Trp; or
[0393] Leu 36.fwdarw.Val; Ala 40.fwdarw.Thr; Ile 41.fwdarw.Ile; Gln
49.fwdarw.Gly; Tyr 52.fwdarw.Asn; Thr 54.fwdarw.Ala; Asn
65.fwdarw.Gln; Ser 68.fwdarw.Asp; Leu 70.fwdarw.Arg; Arg
72.fwdarw.Ile; Lys 73.fwdarw.Arg; Asp 77.fwdarw.His; Trp
79.fwdarw.Tyr; Arg 81.fwdarw.Asp; Cys 87.fwdarw.Ser; Leu
103.fwdarw.Thr; Tyr 106.fwdarw.Gln; Lys 125.fwdarw.Ile; Ser
127.fwdarw.Arg; Tyr 132.fwdarw.Ile; Lys 134.fwdarw.Trp.
[0394] In another embodiment the hNGAL mutein comprises an amino
acid sequence selected from the group consisting of SEQ ID NOs:
19-37 or a fragment or variant thereof.
[0395] In another embodiment said mutein is capable of binding
pyoverdine type III complexed with iron with a K.sub.D of about 20
nM or lower when measured by Biacore T200 instrument in an assay
essentially described in Example 6.
[0396] In another embodiment said hNGAL mutein is capable of
binding Pvd type III succinyl, Pvd type III succinamid and Pvd type
III a-ketoglutaryl with and without complexed iron, with an
affinity measured by an IC50 value of about 200 nM or lower, when
measured in an assay essentially described in Example 5.
[0397] In another embodiment the hNGAL mutein is capable of
inhibiting iron uptake mediated by pyoverdine type III with an IC50
value of about 150 nM or lower in a competition ELISA format
essentially described in Example 7.
[0398] In another embodiment the hNGAL mutein is capable of
inhibiting bacterial growth of Pvd III strain in an assay
essentially described in Example 8.
[0399] In another embodiment the hNGAL mutein comprises a mutated
amino acid residue at one or more positions corresponding to
positions 28, 36, 40-42, 45-47, 49, 52, 65, 68, 70, 72-73, 77, 79,
81, 87, 96, 100, 103, 105-106, 125, 127, 132, 134 and 145 of the
linear polypeptide sequence of the mature hNGAL (SEQ ID NO: 1).
[0400] In another embodiment the amino acid sequence of the hNGAL
mutein comprises at least one of the following mutated amino acid
residues in comparison with the linear polypeptide sequence of the
mature hNGAL: Leu 36.fwdarw.Phe or Glu; Ala 40.fwdarw.Trp, Leu or
Arg; Ile 41.fwdarw.Met, Arg, Ala, Leu or Trp; Gln 49.fwdarw.His,
Ile, Arg, Lys, Met or Pro; Tyr 52.fwdarw.Asn, Tyr, Arg, Ser or Met;
Ser 68.fwdarw.Asp, Asn, Glu or Gln; Leu 70.fwdarw.Lys, Asn or Arg;
Arg 72.fwdarw.Leu, Arg, Gln or Tyr; Lys 73.fwdarw.His, Leu, Ala,
Pro, Gln or Tyr; Asp 77.fwdarw.Ala, lie, Lys, Gln or Arg; Trp
79.fwdarw.Ser or Asp; Arg 81.fwdarw.His, Ala, Ser or Val; Asn
96.fwdarw.Met, lie, Arg, Gly, Leu or Val; Tyr 100.fwdarw.Ala, Ile,
Asn, Pro or Asp; Leu 103.fwdarw.Gln, Gly, Phe or Pro; Tyr
106.fwdarw.Glu; Lys 125.fwdarw.Trp or Thr; Ser 127.fwdarw.Val, His,
Ile, Phe or Ala; Tyr 132.fwdarw.Phe; and Lys 134.fwdarw.Trp, Gln or
Glu.
[0401] In another embodiment the amino acid sequence of the hNGAL
mutein comprises the following substitution in comparison with the
linear polypeptide sequence of the mature hNGAL: Gln 28.fwdarw.His;
Leu 42.fwdarw.Arg; Asp 45.fwdarw.Gly; Lys 46.fwdarw.Arg; Asp
47.fwdarw.Asn; Asn 65.fwdarw.Asp; Cys 87.fwdarw.Ser; Ser
105.fwdarw.Pro and Thr 145.fwdarw.Pro.
[0402] In another embodiment the hNGAL mutein comprises at least 1,
2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20
or 21 mutated amino acid residues at the sequence positions 28, 36,
40-42, 45-47, 49, 52, 65, 68, 70, 72-73, 77, 79, 81, 87, 96, 100,
103, 105-106, 125, 127, 132, 134 and 145 of the linear polypeptide
sequence of the mature human NGAL (SEQ ID NO: 1)
[0403] In another embodiment the hNGAL mutein comprises one of the
following sets of amino acid substitutions in comparison with the
linear polypeptide sequence of the mature hNGAL:
[0404] Gln 28.fwdarw.His; Leu 36.fwdarw.Phe; Ala 40.fwdarw.Trp; Ile
41.fwdarw.Met; Gln 49.fwdarw.His; Tyr 52.fwdarw.Asn; Ser
68.fwdarw.Glu; Leu 70.fwdarw.Lys; Arg 72.fwdarw.Gln; Lys
73.fwdarw.Ala; Asp 77.fwdarw.Ile; Trp 79.fwdarw.Ser; Arg
81.fwdarw.His; Cys 87.fwdarw.Ser; Asn 96.fwdarw.Ile; Tyr
100.fwdarw.Asn; Leu 103.fwdarw.Gly; Tyr 106.fwdarw.Glu; Lys
125.fwdarw.Trp; Ser 127.fwdarw.His; Tyr 132.fwdarw.Phe; Lys
134.fwdarw.Gln;
[0405] Gln 28.fwdarw.His; Leu 36.fwdarw.Phe; Ala 40.fwdarw.Arg; Ile
41.fwdarw.Trp; Gln 49.fwdarw.Ile; Tyr 52.fwdarw.Tyr; Ser
68.fwdarw.Gln; Leu 70.fwdarw.Asn; Arg 72.fwdarw.Trp; Lys
73.fwdarw.Leu; Asp 77.fwdarw.Ala; Trp 79.fwdarw.Ser; Arg
81.fwdarw.Ser; Cys 87.fwdarw.Ser; Asn 96.fwdarw.Arg; Tyr
100.fwdarw.Ile; Leu 103.fwdarw.Pro; Tyr 106.fwdarw.Glu; Lys
125.fwdarw.Thr; Ser 127.fwdarw.Ile; Tyr 132.fwdarw.Phe; Lys
134.fwdarw.Glu;
[0406] Gln 28.fwdarw.His; Leu 36.fwdarw.Phe; Ala 40.fwdarw.Leu; Ile
41.fwdarw.Leu; Gln 49.fwdarw.Arg; Tyr 52.fwdarw.Arg; Ser
68.fwdarw.Asp; Leu 70.fwdarw.Arg; Arg 72.fwdarw.Leu; Lys
73.fwdarw.Tyr; Asp 77.fwdarw.Ile; Trp 79.fwdarw.Ser; Arg
81.fwdarw.Ala; Cys 87.fwdarw.Ser; Asn 96.fwdarw.Gly; Tyr
100.fwdarw.Ala; Leu 103.fwdarw.Phe; Tyr 106.fwdarw.Glu; Lys
125.fwdarw.Trp; Ser 127.fwdarw.Ala; Lys 134.fwdarw.Glu;
[0407] Gln 28.fwdarw.His; Leu 36.fwdarw.Phe; Ala 40.fwdarw.Trp; Ile
41.fwdarw.Arg; Gln 49.fwdarw.Pro; Tyr 52.fwdarw.Ser; Ser
68.fwdarw.Asn; Leu 70.fwdarw.Arg; Arg 72.fwdarw.Trp; Lys
73.fwdarw.Pro; Asp 77.fwdarw.Arg; Trp 79.fwdarw.Ser; Arg
81.fwdarw.Ser; Cys 87.fwdarw.Ser; Asn 96.fwdarw.Met; Tyr
100.fwdarw.Pro; Leu 103.fwdarw.Gly; Tyr 106.fwdarw.Glu; Lys
125.fwdarw.Trp; Ser 127.fwdarw.Phe; Tyr 132.fwdarw.Phe; Lys
134.fwdarw.Glu;
[0408] Gln 28.fwdarw.His; Leu 36.fwdarw.Glu; Ala 40.fwdarw.Leu; Ile
41.fwdarw.Ala; Gln 49.fwdarw.Lys; Tyr 52.fwdarw.Met; Ser
68.fwdarw.Glu; Leu 70.fwdarw.Arg; Lys 73.fwdarw.His; Asp
77.fwdarw.Gln; Trp 79.fwdarw.Asp; Arg 81.fwdarw.Ala; Cys
87.fwdarw.Ser; Asn 96.fwdarw.Leu; Tyr 100.fwdarw.Asp; Leu
103.fwdarw.Gln; Tyr 106.fwdarw.Glu; Ser 127.fwdarw.Val; Tyr
132.fwdarw.Phe; Lys 134.fwdarw.Trp;
[0409] Gln 28.fwdarw.His; Leu 36.fwdarw.Glu; Ala 40.fwdarw.Leu; Ile
41.fwdarw.Ala; Gln 49.fwdarw.Met; Tyr 52.fwdarw.Met; Ser
68.fwdarw.Glu; Leu 70.fwdarw.Arg; Lys 73.fwdarw.Gln; Asp
77.fwdarw.Lys; Trp 79.fwdarw.Asp; Arg 81.fwdarw.Vla; Cys
87.fwdarw.Ser; Asn 96.fwdarw.Leu; Tyr 100.fwdarw.Asp; Leu
103.fwdarw.Gln; Tyr 106.fwdarw.Glu; Ser 127.fwdarw.Val; Tyr
132.fwdarw.Phe; Lys 134.fwdarw.Trp;
[0410] Gln 28.fwdarw.His; Leu 36.fwdarw.Glu; Ala 40.fwdarw.Leu; Ile
41.fwdarw.Thr; Gln 49.fwdarw.Met; Tyr 52.fwdarw.Met; Ser
68.fwdarw.Glu; Leu 70.fwdarw.Arg; Lys 73.fwdarw.Arg; Asp
77.fwdarw.Lys; Trp 79.fwdarw.Asp; Arg 81.fwdarw.Vla; Cys
87.fwdarw.Ser; Asn 96.fwdarw.Vla; Tyr 100.fwdarw.Asp; Leu
103.fwdarw.Gln; Tyr 106.fwdarw.Glu; Ser 127.fwdarw.Val; Tyr
132.fwdarw.Phe; Lys 134.fwdarw.Trp;
[0411] Gln 28.fwdarw.His; Leu 36.fwdarw.Glu; Ala 40.fwdarw.Leu; Ile
41.fwdarw.Ala; Gln 49.fwdarw.Met; Tyr 52.fwdarw.Met; Ser
68.fwdarw.Glu; Leu 70.fwdarw.Arg; Lys 73.fwdarw.His; Asp
77.fwdarw.Lys; Trp 79.fwdarw.Asp; Arg 81.fwdarw.Vla; Cys
87.fwdarw.Ser; Asn 96.fwdarw.Leu; Tyr 100.fwdarw.Asp; Leu
103.fwdarw.Gln; Tyr 106.fwdarw.Glu; Ser 127.fwdarw.Val; Tyr
132.fwdarw.Phe; Lys 134.fwdarw.Trp;
[0412] Gln 28.fwdarw.His; Leu 36.fwdarw.Glu; Ala 40.fwdarw.Leu; Ile
41.fwdarw.Ala; Gln 49.fwdarw.Lys; Tyr 52.fwdarw.Met; Ser
68.fwdarw.Glu; Leu 70.fwdarw.Arg; Lys 73.fwdarw.Tyr; Asp
77.fwdarw.Gln; Trp 79.fwdarw.Asp; Arg 81.fwdarw.Vla; Cys
87.fwdarw.Ser; Asn 96.fwdarw.-; Tyr 100.fwdarw.Glu; Leu
103.fwdarw.Gln; Tyr 106.fwdarw.Glu; Ser 127.fwdarw.Val; Tyr
132.fwdarw.Phe; Lys 134.fwdarw.Trp;
[0413] Gln 28.fwdarw.His; Leu 36.fwdarw.Glu; Ala 40.fwdarw.Leu; Ile
41.fwdarw.Ala; Leu 42.fwdarw.Arg; Gln 49.fwdarw.Met; Tyr
52.fwdarw.Met; Ser 68.fwdarw.Glu; Leu 70.fwdarw.Arg; Lys
73.fwdarw.His; Asp 77.fwdarw.Lys; Trp 79.fwdarw.Asp; Arg
81.fwdarw.Vla; Cys 87.fwdarw.Ser; Asn 96.fwdarw.Leu; Tyr
100.fwdarw.Asp; Leu 103.fwdarw.Gln; Ser 105.fwdarw.Pro; Tyr
106.fwdarw.Glu; Ser 127.fwdarw.Val; Tyr 132.fwdarw.Phe; Lys
134.fwdarw.Trp;
[0414] Gln 28.fwdarw.His; Leu 36.fwdarw.Glu; Ala 40.fwdarw.Leu; Ile
41.fwdarw.Ala; Asp 47.fwdarw.Asn; Gln 49.fwdarw.Met; Tyr
52.fwdarw.Met; Ser 68.fwdarw.Glu; Leu 70.fwdarw.Arg; Lys
73.fwdarw.His; Asp 77.fwdarw.Lys; Trp 79.fwdarw.Asp; Arg
81.fwdarw.Vla; Cys 87.fwdarw.Ser; Asn 96.fwdarw.Leu; Tyr
100.fwdarw.Asp; Leu 103.fwdarw.Gln; Ser 105.fwdarw.Pro; Tyr
106.fwdarw.Glu; Ser 127.fwdarw.Val; Tyr 132.fwdarw.Phe; Lys
134.fwdarw.Trp; Thr 145.fwdarw.Pro;
[0415] Gln 28.fwdarw.His; Leu 36.fwdarw.Glu; Ala 40.fwdarw.Leu; Ile
41.fwdarw.Ala; Asp 45.fwdarw.Gly; Lys 46.fwdarw.Arg; Gln
49.fwdarw.Met; Tyr 52.fwdarw.Met; Ser 68.fwdarw.Glu; Leu
70.fwdarw.Arg; Lys 73.fwdarw.His; Asp 77.fwdarw.Lys; Trp
79.fwdarw.Asp; Arg 81.fwdarw.Vla; Cys 87.fwdarw.Ser; Asn
96.fwdarw.Leu; Tyr 100.fwdarw.Asp; Leu 103.fwdarw.Gln; Ser
105.fwdarw.Pro; Tyr 106.fwdarw.Glu; Ser 127.fwdarw.Val; Tyr
132.fwdarw.Phe; Lys 134.fwdarw.Trp;
[0416] Gln 28.fwdarw.His; Leu 36.fwdarw.Glu; Ala 40.fwdarw.Leu; Ile
41.fwdarw.Ala; Leu 42.fwdarw.Arg; Gln 49.fwdarw.Met; Tyr
52.fwdarw.Met; Asn 65.fwdarw.Asp; Ser 68.fwdarw.Glu; Leu
70.fwdarw.Arg; Lys 73.fwdarw.His; Asp 77.fwdarw.Lys; Trp
79.fwdarw.Asp; Arg 81.fwdarw.Vla; Cys 87.fwdarw.Ser; Asn
96.fwdarw.Leu; Tyr 100.fwdarw.Asp; Leu 103.fwdarw.Gln; Ser
105.fwdarw.Pro; Tyr 106.fwdarw.Glu; Ser 127.fwdarw.Val; Tyr
132.fwdarw.Phe; Lys 134.fwdarw.Trp;
[0417] Gln 28.fwdarw.His; Leu 36.fwdarw.Glu; Ala 40.fwdarw.Leu; Ile
41.fwdarw.Ala; Asp 47.fwdarw.Asn; Gln 49.fwdarw.Met; Tyr
52.fwdarw.Met; Asn 65.fwdarw.Asp; Ser 68.fwdarw.Glu; Leu
70.fwdarw.Arg; Lys 73.fwdarw.His; Asp 77.fwdarw.Lys; Trp
79.fwdarw.Asp; Arg 81.fwdarw.Vla; Cys 87.fwdarw.Ser; Asn
96.fwdarw.Leu; Tyr 100.fwdarw.Asp; Leu 103.fwdarw.Gln; Ser
105.fwdarw.Pro; Tyr 106.fwdarw.Glu; Ser 127.fwdarw.Val; Tyr
132.fwdarw.Phe; Lys 134.fwdarw.Trp; Thr 145.fwdarw.Pro;
[0418] Gln 28.fwdarw.His; Leu 36.fwdarw.Glu; Ala 40.fwdarw.Leu; Ile
41.fwdarw.Ala; Asp 45.fwdarw.Gly; Lys 46.fwdarw.Arg; Gln
49.fwdarw.Met; Tyr 52.fwdarw.Met; Asn 65.fwdarw.Asp; Ser
68.fwdarw.Glu; Leu 70.fwdarw.Arg; Lys 73.fwdarw.His; Asp
77.fwdarw.Lys; Trp 79.fwdarw.Asp; Arg 81.fwdarw.Vla; Cys
87.fwdarw.Ser; Asn 96.fwdarw.Leu; Tyr 100.fwdarw.Asp; Leu
103.fwdarw.Gln; Ser 105.fwdarw.Pro; Tyr 106.fwdarw.Glu; Ser
127.fwdarw.Val; Tyr 132.fwdarw.Phe; Lys 134.fwdarw.Trp; or
[0419] Leu 36.fwdarw.Glu; Ala 40.fwdarw.Leu; Ile 41.fwdarw.Ala; Leu
42.fwdarw.Arg; Gln 49.fwdarw.Met; Tyr 52.fwdarw.Met; Asn
65.fwdarw.Asp; Ser 68.fwdarw.Glu; Leu 70.fwdarw.Arg; Lys
73.fwdarw.His; Asp 77.fwdarw.Lys; Trp 79.fwdarw.Asp; Arg
81.fwdarw.Vla; Cys 87.fwdarw.Ser; Asn 96.fwdarw.Leu; Tyr
100.fwdarw.Asp; Leu 103.fwdarw.Gln; Ser 105.fwdarw.Pro; Tyr
106.fwdarw.Glu; Ser 127.fwdarw.Val; Tyr 132.fwdarw.Phe; Lys
134.fwdarw.Trp.
[0420] In another embodiment the polypeptide comprises an amino
acid sequence selected from the group consisting of SEQ ID NOs:
38-53 or a fragment or variant thereof.
[0421] In another embodiment said hNGAL mutein is capable of
binding pyochelin complexed with iron with a K.sub.D of about 20 nM
or lower when measured by Biacore T200 instrument in an assay
essentially described in Example 6.
[0422] In another embodiment said hNGAL mutein is capable of
binding pyochelin with complexed iron, with an affinity measured by
an IC50 value of about 500 nM or lower, when measured in an assay
essentially described in Example 5.
[0423] In another embodiment said hNGAL mutein is capable of
binding pyochelin without complexed iron, with an affinity measured
by an IC50 value of about 200 nM or lower, when measured in an
assay essentially described in Example 5.
[0424] In another embodiment said hNGAL mutein is capable of
binding pyochelin with and without complexed iron, with an affinity
measured by an IC50 value of about 200 nM or lower, when measured
in an assay essentially described in Example 5.
[0425] In another embodiment the hNGAL mutein is capable of
inhibiting iron uptake mediated by pyochelin with an IC50 value of
about 150 nM or lower in a competition ELISA format essentially
described in Example 7.
[0426] In another embodiment the hNGAL mutein is capable of
inhibiting bacterial growth of Pvd I knock-out (.DELTA.pvdA) in an
assay essentially described in Example 8 In another embodiment the
hNGAL mutein comprises a mutated amino acid residue at one or more
positions corresponding to positions 28, 34, 36, 40-41, 44-46, 49,
52, 54, 65, 68, 70, 72-74, 77, 79-81, 87, 96, 100, 103, 106, 108,
123, 125, 127, 132, 134 and 141 of the linear polypeptide sequence
of the mature hNGAL (SEQ ID NO: 1).
[0427] In another embodiment the amino acid sequence of the hNGAL
mutein comprises at least one of the following mutated amino acid
residues in comparison with the linear polypeptide sequence of the
mature hNGAL: Leu 36.fwdarw.His, Met or Val; Ala 40.fwdarw.Ile,
Gln, Tyr or Phe; Ile 41.fwdarw.Leu, His or Trp; Gln 49.fwdarw.His,
Arg, Ser or Ala; Tyr 52.fwdarw.Leu, Trp or Pro; Ser 68.fwdarw.Asp
or His; Leu 70.fwdarw.Arg or Trp; Arg 72.fwdarw.His, Ile, Ala, Ser
or Gly; Lys 73.fwdarw.Asn, Met, Pro, Phe, Gln or Arg; Asp
77.fwdarw.Arg, Thr, Pro or Asp; Trp 79.fwdarw.Ala, Arg, Lys or Asp;
Arg 81.fwdarw.Thr, Ile or Trp; Asn 96.fwdarw.Met, Asn, Pro or Ala;
Tyr 100.fwdarw.Gly, His or Glu; Leu 103.fwdarw.Gly, Met, His or
Gln; Tyr 106.fwdarw.Met. Gly, Arg or Trp; Lys 125.fwdarw.Trp, Phe,
Gly or Leu; Ser 127.fwdarw.Arg, Trp, Asp or Ile; Tyr
132.fwdarw.Ala, Glu or Thr; and Lys 134.fwdarw.Leu, Val, Asn or
Phe.
[0428] In another embodiment the amino acid sequence of the hNGAL
mutein comprises the following substitution in comparison with the
linear polypeptide sequence of the mature hNGAL: Gln 28.fwdarw.His;
Val 34.fwdarw.Leu; Glu 44.fwdarw.Gly; Asp 45.fwdarw.Gly;
Lys.fwdarw.Arg or Tyr; Asn 65.fwdarw.Asp; Ile 80.fwdarw.Thr; Cys
87.fwdarw.Ser; Leu 94.fwdarw.Phe; Val 108.fwdarw.Ala; Phe
123.fwdarw.Ser and Thr 141.fwdarw.Ala.
[0429] In another embodiment the hNGAL mutein comprises at least 1,
2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20
or 21 mutated amino acid residues at the sequence positions 28, 34,
36, 40-41, 44-46, 49, 52, 54, 65, 68, 70, 72-74, 77, 79-81, 87, 96,
100, 103, 106, 108, 123, 125, 127, 132, 134 and 141 of the linear
polypeptide sequence of the mature human NGAL (SEQ ID NO: 1).
[0430] In another embodiment the hNGAL mutein comprises one of the
following sets of amino acid substitutions in comparison with the
linear polypeptide sequence of the mature hNGAL:
[0431] Gln 28.fwdarw.His; Ala 40.fwdarw.Ile; Ile 41.fwdarw.Leu; Gln
49.fwdarw.His; Tyr 52.fwdarw.Leu; Ser 68.fwdarw.His; Leu
70.fwdarw.Thr; Arg 72.fwdarw.Lys; Lys 73.fwdarw.Trp; Asp
77.fwdarw.Ile; Trp 79.fwdarw.Ser; Arg 81.fwdarw.His; Cys
87.fwdarw.Ser; Asn 96.fwdarw.Met; Tyr 100.fwdarw.Asn; Leu
103.fwdarw.His; Tyr 106.fwdarw.Met; Lys 125.fwdarw.Trp; Ser
127.fwdarw.Asp; Tyr 132.fwdarw.Glu; Lys 134.fwdarw.Leu;
[0432] Gln 28.fwdarw.His; Leu 36.fwdarw.His; Ala 40.fwdarw.Gln; Ile
41.fwdarw.Trp; Gln 49.fwdarw.Arg; Tyr 52.fwdarw.Trp; Ser
68.fwdarw.Asp; Leu 70.fwdarw.Asp; Arg 72.fwdarw.Ala; Lys
73.fwdarw.Ile; Asp 77.fwdarw.His; Trp 79.fwdarw.Arg; Arg
81.fwdarw.Thr; Cys 87.fwdarw.Ser; Tyr 100.fwdarw.His; Leu
103.fwdarw.Gly; Tyr 106.fwdarw.Gly; Lys 125.fwdarw.Phe; Ser
127.fwdarw.Ile; Tyr 132.fwdarw.Ala; Lys 134.fwdarw.Phe;
[0433] Gln 28.fwdarw.His; Leu 36.fwdarw.Met; Ala 40.fwdarw.Phe; Ile
41.fwdarw.His; Gln 49.fwdarw.Ser; Tyr 52.fwdarw.Pro; Ser
68.fwdarw.His; Leu 70.fwdarw.Pro; Arg 72.fwdarw.Trp; Lys
73.fwdarw.Ala; Asp 77.fwdarw.Ala; Trp 79.fwdarw.Lys; Arg
81.fwdarw.Ile; Cys 87.fwdarw.Ser; Asn 96.fwdarw.Ala; Tyr
100.fwdarw.Gly; Leu 103.fwdarw.Met; Tyr 106.fwdarw.Trp; Lys
125.fwdarw.Gly; Ser 127.fwdarw.Trp; Tyr 132.fwdarw.Thru; Lys
134.fwdarw.Val;
[0434] Gln 28.fwdarw.His; Leu 36.fwdarw.Val; Ala 40.fwdarw.Tyr; Ile
41.fwdarw.Trp; Gln 49.fwdarw.Ala; Ser 68.fwdarw.Asp; Leu
70.fwdarw.Arg; Arg 72.fwdarw.Trp; Lys 73.fwdarw.Arg; Asp
77.fwdarw.Arg; Trp 79.fwdarw.Asp; Arg 81.fwdarw.Trp; Cys
87.fwdarw.Ser; Asn 96.fwdarw.Pro; Tyr 100.fwdarw.Glu; Leu
103.fwdarw.Gln; Tyr 106.fwdarw.Arg; Lys 125.fwdarw.Leu; Ser
127.fwdarw.Arg; Tyr 132.fwdarw.Ala; Lys 134.fwdarw.Asn;
[0435] Gln 28.fwdarw.His; Vla 34.fwdarw.Leu; Leu 36.fwdarw.Met; Ala
40.fwdarw.Phe; Ile 41.fwdarw.His; Gln 49.fwdarw.Ser; Tyr
52.fwdarw.Pro; Ser 68.fwdarw.His; Leu 70.fwdarw.Pro; Arg
72.fwdarw.Trp; Lys 73.fwdarw.Ala; Asp 77.fwdarw.Ala; Trp
79.fwdarw.Lys; Ile 80.fwdarw.Thr; Arg 81.fwdarw.Ile; Cys
87.fwdarw.Ser; Asn 96.fwdarw.Ala; Tyr 100.fwdarw.Gly; Leu
103.fwdarw.Met; Tyr 106.fwdarw.Trp; Phe 123.fwdarw.Ser; Lys
125.fwdarw.Gly; Ser 127.fwdarw.Trp; Tyr 132.fwdarw.Thru; Lys
134.fwdarw.Val; Thr 141.fwdarw.Ala;
[0436] Gln 28.fwdarw.His; Leu 36.fwdarw.Met; Ala 40.fwdarw.Phe; Ile
41.fwdarw.His; Gln 49.fwdarw.Ser; Tyr 52.fwdarw.Pro; Ser
68.fwdarw.His; Leu 70.fwdarw.Pro; Arg 72.fwdarw.Trp; Lys
73.fwdarw.Ala; Asp 77.fwdarw.Ala; Trp 79.fwdarw.Lys; lie
80.fwdarw.Thr; Arg 81.fwdarw.Ile; Cys 87.fwdarw.Ser; Asn
96.fwdarw.Ala; Tyr 100.fwdarw.Gly; Leu 103.fwdarw.Met; Tyr
106.fwdarw.Trp; Phe 123.fwdarw.Ser; Lys 125.fwdarw.Gly; Ser
127.fwdarw.Trp; Tyr 132.fwdarw.Thru; Lys 134.fwdarw.Val;
[0437] Gln 28.fwdarw.His; Leu 36.fwdarw.His; Ala 40.fwdarw.Gln; Ile
41.fwdarw.Trp; Asp 45.fwdarw.Gly; Lys 46.fwdarw.Arg; Gln
49.fwdarw.Arg; Tyr 52.fwdarw.Trp; Ser 68.fwdarw.Asp; Leu
70.fwdarw.Asp; Arg 72.fwdarw.Ala; Lys 73.fwdarw.Ile; Asp
77.fwdarw.Leu; Trp 79.fwdarw.Arg; Arg 81.fwdarw.Thr; Cys
87.fwdarw.Ser; Tyr 100.fwdarw.His; Leu 103.fwdarw.Gly; Tyr
106.fwdarw.Gly; Lys 125.fwdarw.Phe; Ser 127.fwdarw.Ile; Tyr
132.fwdarw.Ala; Lys 134.fwdarw.Phe;
[0438] Gln 28.fwdarw.His; Leu 36.fwdarw.His; Ala 40.fwdarw.Gln; Ile
41.fwdarw.Trp; Glu 44.fwdarw.Gly; Lys 46.fwdarw.Tyr; Gln
49.fwdarw.Arg; Tyr 52.fwdarw.Trp; Ser 68.fwdarw.Asp; Leu
70.fwdarw.Asp; Arg 72.fwdarw.Ala; Lys 73.fwdarw.Ile; Lys
74.fwdarw.Glu; Asp 77.fwdarw.His; Trp 79.fwdarw.Arg; Arg
81.fwdarw.Thr; Cys 87.fwdarw.Ser; Leu 94.fwdarw.Phe; Tyr
100.fwdarw.His; Leu 103.fwdarw.Gly; Tyr 106.fwdarw.Gly; Val
108.fwdarw.Ala; Lys 125.fwdarw.Phe; Ser 127.fwdarw.Ile; Tyr
132.fwdarw.Ala; Lys 134.fwdarw.Phe; or
[0439] Leu 36.fwdarw.His; Ala 40.fwdarw.Gln; Ile 41.fwdarw.Trp; Asp
45.fwdarw.Gly; Lys 46.fwdarw.Arg; Gln 49.fwdarw.Arg; Tyr
52.fwdarw.Trp; Asn 65.fwdarw.Asp; Ser 68.fwdarw.Asp; Leu
70.fwdarw.Asp; Arg 72.fwdarw.Ala; Lys 73.fwdarw.Ile; Asp
77.fwdarw.Leu; Trp 79.fwdarw.Arg; Arg 81.fwdarw.Thr; Cys
87.fwdarw.Ser; Tyr 100.fwdarw.His; Leu 103.fwdarw.Gly; Tyr
106.fwdarw.Gly; Lys 125.fwdarw.Phe; Ser 127.fwdarw.Ile; Tyr
132.fwdarw.Ala; Lys 134.fwdarw.Phe.
[0440] In another embodiment the polypeptide comprises an amino
acid sequence selected from the group consisting of SEQ ID NOs:
54-63 or a fragment or variant thereof.
[0441] In another embodiment the polypeptide comprises an amino
acid sequence selected from the group consisting of SEQ ID NOs:
2-63 or a fragment or variant thereof.
[0442] In another embodiment said hNGAL mutein comprises one or
more non-native cysteine residues substituting one or more amino
acids of a wild type hNGAL.
[0443] In another embodiment said hNGAL mutein comprises at least
one amino acid substitution of a native cysteine residue by another
amino acid.
[0444] In another embodiment said another amino acid is a serine
residue.
[0445] In another embodiment the hNGAL mutein is conjugated to a
compound selected from the group consisting of an organic molecule,
an enzyme label, a radioactive label, a colored label, a
fluorescent label, a chromogenic label, a luminescent label, a
hapten, digoxigenin, biotin, a cytostatic agent, a toxins, a metal
complex, a metal, and colloidal gold.
[0446] In another embodiment the hNGAL mutein is fused at its
N-terminus and/or its C-terminus to a fusion partner which is a
protein, or a protein domain or a peptide.
[0447] In another embodiment the hNGAL mutein is conjugated to a
compound that extends the serum half-life of the polypeptide.
[0448] In another embodiment the polypeptide comprises a compound
that extends the serum half-life is selected from the group
consisting of a polyalkylene glycol molecule, hydroethylstarch, a
Fc part of an immunoglobulin, a CH3 domain of an immunoglobulin, a
CH4 domain of an immunoglobulin, an albumin binding peptide, and an
albumin binding protein.
[0449] In another embodiment the polyalkylene glycol is
polyethylene (PEG) or an activated derivative thereof.
[0450] In another embodiment a nucleic acid molecule is encompassed
comprising a nucleotide sequence encoding any of the polypeptides
mentioned herein.
[0451] In another embodiment the nucleic acid molecule is operably
linked to a regulatory sequence to allow expression of said nucleic
acid molecule.
[0452] In another embodiment the nucleic acid molecule is comprised
in a vector or in a phagemid vector.
[0453] In another embodiment a host cell is encompassed containing
a nucleic acid molecule of any one of the ones mentioned
herein.
[0454] In another embodiment a method of producing any of the
polypeptide described herein is encompassed, wherein the
polypeptide is produced starting from the nucleic acid coding for
the polypeptide by means of genetic engineering methods.
[0455] In another embodiment the polypeptide is produced in a
bacterial or eucaryotic host organism and is isolated from this
host organism or its culture.
[0456] In another embodiment a composition is encompassed
comprising one or more polypeptides selected from the group
consisting of (i) a polypeptide specific for pyoverdine type I,
(ii) a polypeptide specific for pyoverdine type II, (iii) a
polypeptide specific for pyoverdine type III and (iv) a polypeptide
specific for pyochelin.
[0457] In another embodiment the composition comprises two or more
polypeptides selected from the group consisting of (i) a
polypeptide specific for pyoverdine type I, (ii) a polypeptide
specific for pyoverdine type II, (iii) a polypeptide specific for
pyoverdine type III and (iv) a polypeptide specific for
pyochelin.
[0458] In another embodiment the composition comprises three or
four polypeptides selected from the group consisting of (i) a
polypeptide specific for pyoverdine type I, (ii) a polypeptide
specific for pyoverdine type II, (iii) a polypeptide specific for
pyoverdine type III and (iv) a polypeptide specific for
pyochelin.
[0459] In another embodiment the composition comprises the
polypeptide specific for pyoverdine type I.
[0460] In another embodiment the composition comprises the
polypeptide specific for pyoverdine type II.
[0461] In another embodiment the composition comprises the
polypeptide specific for pyoverdine type III.
[0462] In another embodiment the composition comprises the
polypeptide specific for pyochelin.
[0463] In another embodiment said composition further includes at
least one pharmaceutically acceptable adjuvant, diluent or
carrier.
[0464] In another embodiment the method of binding pyoverdine type
I, II, III and/or pyochelin in a subject comprises administering to
said subject an effective amount of any of the compositions
mentioned herein.
[0465] In another embodiment a method is encompassed for inhibiting
or lessening growth of P. aeruginosa in a subject, comprising
administering to said subject an effective amount of the
composition of any of the ones mentioned herein.
[0466] In another embodiment a kit is encompassed comprising one or
more containers, separately or in admixture, and the composition of
any of the ones mentioned herein.
[0467] In another embodiment the use of (i) a polypeptide according
to any polypeptide mentioned herein capable of binding to
pyoverdine type I, (ii) a polypeptide according to any polypeptide
mentioned herein capable of binding to pyoverdine type II, (iii) a
polypeptide according to any polypeptide mentioned herein capable
of binding to pyoverdine type III and/or (iv) a polypeptide
according to any polypeptide mentioned herein capable of binding to
pyochelin is encompassed, for the binding of pyoverdine type I, II,
III and/or pyochelin in a subject.
[0468] In another embodiment the use of (i) a polypeptide according
to any polypeptide mentioned herein capable of binding to
pyoverdine type I, (ii) a polypeptide according to any polypeptide
mentioned herein capable of binding to pyoverdine type II, (iii) a
polypeptide according to any polypeptide mentioned herein capable
of binding to pyoverdine type III and/or (iv) a polypeptide
according to any polypeptide mentioned herein capable of binding to
pyochelin is encompassed, for preventing or reducing iron-uptake by
P. aeruginosa through pyochelin and/or pyoverdine in a subject.
[0469] In another embodiment the use of (i) a polypeptide according
to any polypeptide mentioned herein capable of binding to
pyoverdine type I, (ii) a polypeptide according to any polypeptide
mentioned herein capable of binding to pyoverdine type II, (iii) a
polypeptide according to any polypeptide mentioned herein capable
of binding to pyoverdine type III and/or (iv) a polypeptide
according to any polypeptide mentioned herein capable of binding to
pyochelin is encompassed, for the treatment or alleviation of P.
aeruginosa biofilm infection in a subject.
[0470] In another embodiment the P. aeruginosa biofilm infection is
acute or chronic infection.
[0471] In another embodiment said first, second, third and/or
fourth polypeptides are administered in combination, including
concurrently, concomitantly or in series.
[0472] In another embodiment said first, second, third and/or
fourth polypeptides are administered independent from each other,
including at individual intervals at independent points of
time.
[0473] In another embodiment a combination comprising (i) a
polypeptide according to any polypeptide mentioned herein capable
of binding to pyoverdine type I, (ii) a polypeptide according to
any polypeptide mentioned herein capable of binding to pyoverdine
type II, (iii) a polypeptide according to any polypeptide mentioned
herein capable of binding to pyoverdine type III and/or (iv) a
polypeptide according to any polypeptide mentioned herein capable
of binding to pyochelin.
[0474] Embodiments illustratively described herein may suitably be
practiced in the absence of any element or elements, limitation or
limitations, not specifically disclosed herein. Thus, for example,
the terms "comprising", "including", "containing", etc. shall be
read expansively and without limitation. Additionally, the terms
and expressions employed herein have been used as terms of
description and not of limitation, and there is no intention in the
use of such terms and expressions of excluding any equivalents of
the features shown and described or portions thereof, but it is
recognized that various modifications are possible within the scope
of the invention claimed. Thus, it should be understood that
although the present embodiments have been specifically disclosed
by preferred embodiments and optional features, modification and
variations thereof may be resorted to by those skilled in the art,
and that such modifications and variations are considered to be
within the scope of the invention. All patents, patent
applications, textbooks and peer-reviewed publications described
herein are hereby incorporated by reference in their entirety.
Furthermore, where a definition or use of a term in a reference,
which is incorporated by reference herein is inconsistent or
contrary to the definition of that term provided herein, the
definition of that term provided herein applies and the definition
of that term in the reference does not apply. Each of the narrower
species and subgeneric groupings falling within the generic
disclosure also forms part of the invention. This includes the
generic description of the invention with a proviso or negative
limitation removing any subject matter from the genus, regardless
of whether or not the excised material is specifically recited
herein. In addition, where features are described in terms of
Markush groups, those skilled in the art will recognize that the
disclosure is also thereby described in terms of any individual
member or subgroup of members of the Markush group. Further
embodiments will become apparent from the following claims.
Sequence CWU 1
1
1331178PRTArtificial SequenceNGAL wt 1Gln Asp Ser Thr Ser Asp Leu
Ile Pro Ala Pro Pro Leu Ser Lys Val 1 5 10 15 Pro Leu Gln Gln Asn
Phe Gln Asp Asn Gln Phe Gln Gly Lys Trp Tyr 20 25 30 Val Val Gly
Leu Ala Gly Asn Ala Ile Leu Arg Glu Asp Lys Asp Pro 35 40 45 Gln
Lys Met Tyr Ala Thr Ile Tyr Glu Leu Lys Glu Asp Lys Ser Tyr 50 55
60 Asn Val Thr Ser Val Leu Phe Arg Lys Lys Lys Cys Asp Tyr Trp Ile
65 70 75 80 Arg Thr Phe Val Pro Gly Cys Gln Pro Gly Glu Phe Thr Leu
Gly Asn 85 90 95 Ile Lys Ser Tyr Pro Gly Leu Thr Ser Tyr Leu Val
Arg Val Val Ser 100 105 110 Thr Asn Tyr Asn Gln His Ala Met Val Phe
Phe Lys Lys Val Ser Gln 115 120 125 Asn Arg Glu Tyr Phe Lys Ile Thr
Leu Tyr Gly Arg Thr Lys Glu Leu 130 135 140 Thr Ser Glu Leu Lys Glu
Asn Phe Ile Arg Phe Ser Lys Ser Leu Gly 145 150 155 160 Leu Pro Glu
Asn His Ile Val Phe Pro Val Pro Ile Asp Gln Cys Ile 165 170 175 Asp
Gly 2178PRTArtificial SequenceNGAL mutein Pvd type I binder 1 2Gln
Asp Ser Thr Ser Asp Leu Ile Pro Ala Pro Pro Leu Ser Lys Val 1 5 10
15 Pro Leu Gln Gln Asn Phe Gln Asp Asn Gln Phe His Gly Lys Trp Tyr
20 25 30 Val Val Gly Asn Ala Gly Asn Gly Trp Leu Arg Glu Asp Lys
Asp Pro 35 40 45 Ile Lys Met Met Ala Thr Ile Tyr Glu Leu Lys Glu
Asp Lys Ser Tyr 50 55 60 Asn Val Thr Val Val Gln Phe Trp Asp Lys
Lys Cys Leu Tyr Gln Ile 65 70 75 80 Gln Thr Phe Val Pro Gly Ser Gln
Pro Gly Glu Phe Thr Leu Gly His 85 90 95 Ile Lys Ser Lys Pro Gly
His Thr Ser His Leu Val Arg Val Val Ser 100 105 110 Thr Asn Tyr Asn
Gln His Ala Met Val Phe Phe Lys Arg Val Trp Gln 115 120 125 Asn Arg
Glu Trp Phe Asp Ile Thr Leu Tyr Gly Arg Thr Lys Glu Leu 130 135 140
Thr Ser Glu Leu Lys Glu Asn Phe Ile Arg Phe Ser Lys Ser Leu Gly 145
150 155 160 Leu Pro Glu Asn His Ile Val Phe Pro Val Pro Ile Asp Gln
Cys Ile 165 170 175 Asp Gly 3178PRTArtificial SequenceNGAL mutein
Pvd type I binder 2 3Gln Asp Ser Thr Ser Asp Leu Ile Pro Ala Pro
Pro Leu Ser Lys Val 1 5 10 15 Pro Leu Gln Gln Asn Phe Gln Asp Asn
Gln Phe His Gly Lys Trp Tyr 20 25 30 Val Val Gly Thr Ala Gly Asn
Gly Phe Leu Arg Glu Asp Lys Asp Pro 35 40 45 Leu Lys Met Trp Ala
Thr Ile Tyr Glu Leu Lys Glu Asp Lys Ser Tyr 50 55 60 Asn Val Thr
Ser Val Trp Phe Ala Leu Lys Lys Cys Tyr Tyr Asp Ile 65 70 75 80 Gly
Thr Phe Val Pro Gly Ser Gln Pro Gly Glu Phe Thr Leu Gly Ile 85 90
95 Ile Lys Ser Glu Pro Gly His Thr Ser Gln Leu Val Arg Val Val Ser
100 105 110 Thr Asn Tyr Asn Gln His Ala Met Val Phe Phe Lys Trp Val
Asn Gln 115 120 125 Asn Arg Glu Asn Phe Gln Ile Thr Leu Tyr Gly Arg
Thr Lys Glu Leu 130 135 140 Thr Ser Glu Leu Lys Glu Asn Phe Ile Arg
Phe Ser Lys Ser Leu Gly 145 150 155 160 Leu Pro Glu Asn His Ile Val
Phe Pro Val Pro Ile Asp Gln Cys Ile 165 170 175 Asp Gly
4178PRTArtificial SequenceNGAL mutein Pvd type I binder 3 4Gln Asp
Ser Thr Ser Asp Leu Ile Pro Ala Pro Pro Leu Ser Lys Val 1 5 10 15
Pro Leu Gln Gln Asn Phe Gln Asp Asn Gln Phe His Gly Lys Trp Tyr 20
25 30 Val Val Gly Trp Ala Gly Asn Thr Thr Leu Arg Glu Asp Lys Asp
Pro 35 40 45 Pro Lys Met Pro Ala Thr Ile Tyr Glu Leu Lys Glu Asp
Lys Ser Tyr 50 55 60 Asn Val Thr Asp Val Gln Phe Ser Glu Lys Lys
Cys Ser Tyr Ser Ile 65 70 75 80 Ile Thr Phe Val Pro Gly Ser Gln Pro
Gly Glu Phe Thr Leu Gly Gly 85 90 95 Ile Lys Ser Asn Pro Gly Lys
Thr Ser His Leu Val Arg Val Val Ser 100 105 110 Thr Asn Tyr Asn Gln
His Ala Met Val Phe Phe Lys Tyr Val Ala Gln 115 120 125 Asn Arg Glu
Gly Phe Asn Ile Thr Leu Tyr Gly Arg Thr Lys Glu Leu 130 135 140 Thr
Ser Glu Leu Lys Glu Asn Phe Ile Arg Phe Ser Lys Ser Leu Gly 145 150
155 160 Leu Pro Glu Asn His Ile Val Phe Pro Val Pro Ile Asp Gln Cys
Ile 165 170 175 Asp Gly 5178PRTArtificial SequenceNGAL mutein Pvd
type I binder 4 5Gln Asp Ser Thr Ser Asp Leu Ile Pro Ala Pro Pro
Leu Ser Lys Val 1 5 10 15 Pro Leu Gln Gln Asn Phe Gln Asp Asn Gln
Phe His Gly Lys Trp Tyr 20 25 30 Val Val Gly Phe Ala Gly Asn Asn
Arg Leu Arg Glu Asp Lys Asp Pro 35 40 45 Pro Lys Met Met Ala Thr
Ile Tyr Glu Leu Lys Glu Asp Lys Ser Tyr 50 55 60 Asn Val Thr Asp
Val Thr Phe Glu Ala Lys Lys Cys Arg Tyr Arg Ile 65 70 75 80 Ile Thr
Phe Val Pro Gly Ser Gln Pro Gly Glu Phe Thr Leu Gly Tyr 85 90 95
Ile Lys Ser Lys Pro Gly Pro Thr Ser Phe Leu Val Arg Val Val Ser 100
105 110 Thr Asn Tyr Asn Gln His Ala Met Val Phe Phe Lys Ser Val Thr
Gln 115 120 125 Asn Arg Glu Trp Phe Gly Ile Thr Leu Tyr Gly Arg Thr
Lys Glu Leu 130 135 140 Thr Ser Glu Leu Lys Glu Asn Phe Ile Arg Phe
Ser Lys Ser Leu Gly 145 150 155 160 Leu Pro Glu Asn His Ile Val Phe
Pro Val Pro Ile Asp Gln Cys Ile 165 170 175 Asp Gly
6178PRTArtificial SequenceNGAL mutein Pvd type I binder 5 6Gln Asp
Ser Thr Ser Asp Leu Ile Pro Ala Pro Pro Leu Ser Lys Val 1 5 10 15
Pro Leu Gln Gln Asn Phe Gln Asp Asn Gln Phe His Gly Lys Trp Tyr 20
25 30 Val Val Gly Leu Ala Gly Asn Gly Trp Leu Arg Glu Asp Lys Asp
Pro 35 40 45 Val Lys Met Met Ala Thr Ile Tyr Glu Leu Lys Glu Asp
Lys Ser Tyr 50 55 60 Asn Val Thr Val Val Asp Phe Glu Leu Lys Lys
Cys Arg Tyr Met Ile 65 70 75 80 Glu Thr Phe Val Pro Gly Ser Gln Pro
Gly Glu Phe Thr Leu Gly Asp 85 90 95 Ile Lys Ser Phe Pro Gly Trp
Thr Ser Gln Leu Val Arg Val Val Ser 100 105 110 Thr Asn Tyr Asn Gln
His Ala Met Val Phe Phe Lys Gly Val Tyr Gln 115 120 125 Asn Arg Glu
Trp Phe His Ile Thr Leu Tyr Gly Arg Thr Lys Glu Leu 130 135 140 Thr
Ser Glu Leu Lys Glu Asn Phe Ile Arg Phe Ser Lys Ser Leu Gly 145 150
155 160 Leu Pro Glu Asn His Ile Val Phe Pro Val Pro Ile Asp Gln Cys
Ile 165 170 175 Asp Gly 7178PRTArtificial SequenceNGAL mutein Pvd
type I binder 6 7Gln Asp Ser Thr Ser Asp Leu Ile Pro Ala Pro Pro
Leu Ser Lys Val 1 5 10 15 Pro Leu Gln Gln Asn Phe Gln Asp Asn Gln
Phe His Gly Lys Trp Tyr 20 25 30 Val Val Gly Val Ala Gly Asn Phe
Phe Leu Arg Glu Asp Lys Asp Pro 35 40 45 Ala Lys Met Pro Ala Thr
Ile Tyr Glu Leu Lys Glu Asp Lys Ser Tyr 50 55 60 Asn Val Thr Glu
Val Trp Phe Leu Asn Lys Lys Cys Gln Tyr Glu Ile 65 70 75 80 His Thr
Phe Val Pro Gly Ser Gln Pro Gly Glu Phe Thr Leu Gly Tyr 85 90 95
Ile Lys Ser Tyr Pro Gly Tyr Thr Ser His Leu Val Arg Val Val Ser 100
105 110 Thr Asn Tyr Asn Gln His Ala Met Val Phe Phe Lys Val Val His
Gln 115 120 125 Asn Arg Asp Lys Phe Trp Ile Thr Leu Tyr Gly Arg Thr
Lys Glu Leu 130 135 140 Thr Ser Glu Leu Lys Glu Asn Phe Ile Arg Phe
Ser Lys Ser Leu Gly 145 150 155 160 Leu Pro Glu Asn His Ile Val Phe
Pro Val Pro Ile Asp Gln Cys Ile 165 170 175 Asp Gly
8178PRTArtificial SequenceNGAL mutein Pvd type I binder 7 8Gln Asp
Ser Thr Ser Asp Leu Ile Pro Ala Pro Pro Leu Ser Lys Val 1 5 10 15
Pro Leu Gln Gln Asn Phe Gln Asp Asn Gln Phe His Gly Lys Trp Tyr 20
25 30 Val Val Gly Trp Ala Gly Asn Thr Thr Leu Arg Glu Asp Lys Asp
Pro 35 40 45 Pro Lys Met Pro Ala Thr Ile Tyr Glu Leu Lys Glu Asp
Lys Ser Tyr 50 55 60 Asn Val Thr Asp Val Gln Phe Pro Glu Lys Lys
Cys Ile Tyr Ser Thr 65 70 75 80 Ile Thr Phe Val Pro Gly Ser Gln Pro
Gly Glu Phe Thr Leu Gly Gly 85 90 95 Ile Lys Ser Ser Pro Gly Gln
Thr Ser His Leu Val Arg Val Val Ser 100 105 110 Thr Asn Tyr Asn Gln
His Ala Met Val Phe Phe Lys Tyr Val Ile Gln 115 120 125 Asn Arg Glu
Gly Phe Asn Ile Thr Leu Tyr Gly Arg Thr Lys Glu Leu 130 135 140 Thr
Ser Glu Leu Lys Glu Asn Phe Ile Arg Phe Ser Lys Ser Leu Gly 145 150
155 160 Leu Pro Glu Asn His Ile Val Phe Pro Val Pro Ile Asp Gln Cys
Ile 165 170 175 Asp Gly 9178PRTArtificial SequenceNGAL mutein Pvd
type I binder 8 9Gln Asp Ser Thr Ser Asp Leu Ile Pro Ala Pro Pro
Leu Ser Lys Val 1 5 10 15 Pro Leu Gln Gln Asn Phe Gln Asp Asn Gln
Phe His Gly Lys Trp Tyr 20 25 30 Val Val Gly Trp Ala Gly Asn Thr
Thr Leu Arg Glu Asp Lys Asp Pro 35 40 45 Pro Lys Met Pro Ala Thr
Ile Tyr Glu Leu Lys Glu Asp Lys Ser Tyr 50 55 60 Asn Val Thr Asp
Val Gln Phe Pro Asp Lys Lys Cys Ile Tyr Ser Ile 65 70 75 80 Ile Thr
Phe Val Pro Gly Ser Gln Pro Gly Glu Phe Thr Leu Gly Gly 85 90 95
Ile Lys Ser Asn Pro Gly Asp Thr Ser His Leu Val Arg Val Val Ser 100
105 110 Thr Asn Tyr Asn Gln His Ala Met Val Phe Phe Lys Tyr Val Val
Gln 115 120 125 Asn Arg Glu Gly Phe Asn Ile Thr Leu Tyr Gly Arg Thr
Lys Glu Leu 130 135 140 Thr Ser Glu Leu Lys Glu Asn Phe Ile Arg Phe
Ser Lys Ser Leu Gly 145 150 155 160 Leu Pro Glu Asn His Ile Val Phe
Pro Val Pro Ile Asp Gln Cys Ile 165 170 175 Asp Gly
10178PRTArtificial SequenceNGAL mutein Pvd type I binder 9 10Gln
Asp Ser Thr Ser Asp Leu Ile Pro Ala Pro Pro Leu Ser Lys Val 1 5 10
15 Pro Leu Gln Gln Asn Phe Gln Asp Asn Gln Phe His Gly Lys Trp Tyr
20 25 30 Val Val Gly Trp Ala Gly Asn Thr Thr Leu Arg Glu Asp Lys
Asp Pro 35 40 45 Pro Lys Met Pro Ala Thr Ile Tyr Glu Leu Lys Glu
Asp Lys Ser Tyr 50 55 60 Asn Val Thr Asp Val Gln Phe Pro Glu Lys
Lys Cys Thr Tyr Ser Ile 65 70 75 80 Ile Thr Phe Val Pro Gly Ser Gln
Pro Gly Glu Phe Thr Leu Gly Asp 85 90 95 Ile Lys Ser Asn Pro Gly
Glu Thr Ser His Leu Val Arg Val Met Ser 100 105 110 Thr Asn Tyr Asn
Gln His Ala Met Val Phe Phe Lys Tyr Val Asp Gln 115 120 125 Asn Arg
Glu Gly Phe Asn Ile Thr Leu Tyr Gly Arg Thr Lys Glu Leu 130 135 140
Thr Ser Glu Leu Lys Glu Asn Phe Ile Arg Phe Ser Lys Ser Leu Gly 145
150 155 160 Leu Pro Glu Asn His Ile Val Phe Pro Val Pro Ile Asp Gln
Cys Ile 165 170 175 Asp Gly 11178PRTArtificial SequenceNGAL mutein
Pvd type I binder 10 11Gln Asp Ser Thr Ser Asp Leu Ile Pro Ala Pro
Pro Leu Ser Lys Val 1 5 10 15 Pro Leu Gln Gln Asn Phe Gln Asp Asn
Gln Phe His Gly Lys Trp Tyr 20 25 30 Val Val Gly Trp Ala Gly Asn
Thr Thr Leu Arg Glu Asp Lys Asp Pro 35 40 45 Pro Lys Met Pro Ala
Thr Ile Tyr Glu Leu Lys Glu Asp Lys Ser Tyr 50 55 60 Asn Val Thr
Asp Val Gln Phe Pro Asp Lys Lys Cys Val Tyr Ser Ile 65 70 75 80 Ile
Thr Phe Val Pro Gly Ser Gln Pro Gly Glu Phe Thr Leu Gly Gly 85 90
95 Ile Lys Ser Asn Pro Gly Asn Thr Ser His Leu Val Arg Val Val Ser
100 105 110 Thr Asn Tyr Asn Gln His Ala Met Val Phe Phe Lys Tyr Val
Val Gln 115 120 125 Asn Arg Glu Gly Phe Asn Ile Thr Leu Tyr Gly Arg
Thr Lys Glu Leu 130 135 140 Thr Ser Glu Leu Lys Glu Asn Phe Ile Arg
Phe Ser Lys Ser Leu Gly 145 150 155 160 Leu Pro Glu Asn His Ile Val
Phe Pro Val Pro Ile Asp Gln Cys Ile 165 170 175 Asp Gly
12178PRTArtificial SequenceNGAL mutein Pvd type I binder 11 12Gln
Asp Ser Thr Ser Asp Leu Ile Pro Ala Pro Pro Leu Ser Lys Val 1 5 10
15 Pro Leu Gln Gln Asn Phe Gln Asp Asn Gln Phe His Gly Lys Trp Tyr
20 25 30 Val Val Gly Leu Ala Gly Asn Gly Trp Leu Arg Glu Asp Lys
Asp Pro 35 40 45 Leu Lys Met Met Ala Thr Ile Tyr Glu Leu Lys Glu
Asp Lys Ser Tyr 50 55 60 Asn Val Thr Val Val Asp Phe Glu Leu Lys
Lys Cys Arg Tyr Met Ile 65 70 75 80 Glu Thr Phe Val Pro Gly Ser Gln
Pro Gly Glu Phe Thr Leu Gly Asp 85 90 95 Ile Lys Ser Ser Pro Gly
Trp Thr Ser Gln Leu Val Arg Val Val Ser 100 105 110 Thr Asn Tyr Asn
Gln His Ala Met Val Phe Phe Lys Gly Val Tyr Gln 115 120 125 Asn Arg
Glu Trp Phe His Ile Thr Leu Tyr Gly Arg Thr Lys Glu Leu 130 135 140
Thr Ser Glu Leu Lys Glu Asn Phe Ile Arg Phe Ser Lys Ser Leu Gly 145
150 155 160 Leu Pro Glu Asn His Ile Val Phe Pro Val Pro Ile Asp Gln
Cys Ile 165 170 175 Asp Gly 13178PRTArtificial SequenceNGAL mutein
Pvd type I binder 12 13Gln Asp Ser Thr Ser Asp Leu Ile Pro Ala Pro
Pro Leu Ser Lys Val 1 5 10 15 Pro Leu Gln Gln Asn Phe Gln Asp Asn
Gln Phe His Gly Lys Trp Tyr 20 25 30 Val Val Gly Trp Ala Gly Asn
Thr Thr Leu Arg Glu Asp Lys Asp Pro 35 40 45 Pro Lys Met Pro Ala
Val Ile Tyr Glu Leu Lys Glu Asp Lys Ser Tyr 50 55 60 Asn Val Thr
Asp Val Gln Phe Pro Glu Lys Glu Cys Ile Tyr Ser Thr 65 70 75 80 Ile
Thr Phe Val Pro Gly Ser Gln Pro
Gly Glu Phe Thr Leu Gly Gly 85 90 95 Ile Lys Ser Ser Pro Gly Gln
Thr Ser His Leu Val Arg Val Val Ser 100 105 110 Thr Asn Tyr Asn Gln
His Ala Met Val Phe Phe Lys Tyr Val Thr Gln 115 120 125 Asn Arg Glu
Gly Phe Asn Ile Thr Leu Tyr Gly Arg Thr Lys Glu Leu 130 135 140 Thr
Ser Glu Leu Lys Glu Asn Phe Ile Arg Phe Ser Lys Ser Leu Gly 145 150
155 160 Leu Pro Glu Asn His Ile Val Phe Pro Val Pro Ile Asp Gln Cys
Ile 165 170 175 Asp Gly 14178PRTArtificial SequenceNGAL mutein Pvd
type I binder 13 14Gln Asp Ser Thr Ser Asp Leu Ile Pro Ala Pro Pro
Leu Ser Lys Val 1 5 10 15 Pro Leu Gln Gln Asn Phe Gln Asp Asn Gln
Phe His Gly Lys Trp Tyr 20 25 30 Val Val Gly Leu Ala Gly Asn Gly
Trp Leu Arg Glu Asp Glu Asp Pro 35 40 45 Leu Lys Met Met Ala Ala
Val Tyr Glu Leu Arg Glu Asp Lys Ser Tyr 50 55 60 Asn Val Thr Val
Val Asp Phe Glu Leu Glu Glu Cys Arg Tyr Met Thr 65 70 75 80 Glu Thr
Phe Val Pro Gly Asn Gln Pro Gly Glu Phe Thr Leu Gly Asp 85 90 95
Ile Lys Ser Ser Pro Gly Trp Thr Ser Gln Leu Val Arg Val Val Ser 100
105 110 Thr Asn Tyr Asn Gln His Ala Met Val Phe Phe Lys Gly Val Tyr
Gln 115 120 125 Asn Arg Glu Trp Phe His Ile Thr Leu Tyr Gly Arg Thr
Lys Glu Leu 130 135 140 Thr Ser Glu Leu Lys Glu Asn Phe Ile Arg Phe
Ser Lys Ser Leu Gly 145 150 155 160 Leu Pro Glu Asn His Ile Val Phe
Pro Val Pro Ile Asp Gln Cys Ile 165 170 175 Asp Gly
15178PRTArtificial SequenceNGAL mutein Pvd type I binder 14 15Gln
Asp Ser Thr Ser Asp Leu Ile Pro Ala Pro Pro Leu Ser Lys Val 1 5 10
15 Pro Leu Gln Gln Asn Phe Gln Asp Asn Gln Phe Gln Gly Lys Trp Tyr
20 25 30 Val Val Gly Trp Ala Gly Asp Thr Thr Leu Arg Glu Asp Lys
Asp Pro 35 40 45 Pro Lys Met Pro Ala Val Ile Tyr Glu Leu Lys Glu
Asp Lys Ser Tyr 50 55 60 Asp Val Thr Asp Val Gln Phe Pro Glu Lys
Glu Cys Ile Tyr Ser Thr 65 70 75 80 Ile Thr Phe Val Pro Gly Ser Gln
Pro Gly Glu Phe Thr Leu Gly Gly 85 90 95 Ile Lys Ser Ser Pro Gly
Gln Thr Ser His Leu Val Arg Val Val Ser 100 105 110 Thr Asn Tyr Asn
Gln His Ala Met Val Phe Phe Lys Tyr Val Thr Gln 115 120 125 Asn Arg
Glu Gly Phe Asn Ile Ala Leu Tyr Gly Arg Thr Lys Glu Leu 130 135 140
Thr Ser Glu Leu Lys Glu Asn Phe Ile Arg Phe Ser Lys Ser Leu Gly 145
150 155 160 Leu Pro Glu Asn His Ile Val Phe Pro Val Pro Ile Asp Gln
Cys Ile 165 170 175 Asp Gly 16178PRTArtificial SequenceNGAL mutein
Pvd type I binder 15 16Gln Asp Ser Thr Ser Asp Leu Ile Pro Ala Pro
Pro Leu Ser Lys Val 1 5 10 15 Pro Leu Gln Gln Asn Phe Gln Asp Asn
Gln Phe Gln Gly Lys Trp Tyr 20 25 30 Val Val Gly Trp Ala Gly Asn
Thr Ala Leu Arg Glu Asp Lys Asp Pro 35 40 45 Pro Lys Met Pro Ala
Val Ile Tyr Glu Leu Lys Glu Asp Lys Ser Tyr 50 55 60 Asp Val Thr
Asp Val Gln Phe Pro Glu Lys Glu Cys Ile Tyr Ser Thr 65 70 75 80 Ile
Thr Phe Val Pro Gly Ser Gln Pro Gly Glu Phe Thr Leu Gly Gly 85 90
95 Ile Lys Ser Ser Pro Gly Gln Thr Ser His Leu Val Arg Val Val Ser
100 105 110 Thr Asn Tyr Asn Gln His Ala Met Val Phe Phe Lys Tyr Val
Thr Gln 115 120 125 Asn Arg Glu Gly Phe Asn Ile Ala Leu Tyr Gly Arg
Thr Lys Glu Leu 130 135 140 Thr Ser Glu Leu Lys Glu Asn Phe Ile Arg
Phe Ser Lys Ser Leu Gly 145 150 155 160 Leu Pro Glu Asn His Ile Val
Phe Pro Val Pro Ile Asp Gln Cys Ile 165 170 175 Asp Gly
17178PRTArtificial SequenceNGAL mutein Pvd type I binder 16 17Gln
Asp Ser Thr Ser Asp Leu Ile Pro Ala Pro Pro Leu Ser Lys Val 1 5 10
15 Pro Leu Gln Gln Asn Phe Gln Asp Asn Gln Phe His Gly Lys Trp Tyr
20 25 30 Val Val Gly Leu Ala Gly Asn Gly Trp Leu Arg Glu Asp Glu
Asp Pro 35 40 45 Leu Lys Met Met Ala Ala Val Tyr Glu Leu Arg Glu
Asp Lys Ser Tyr 50 55 60 Asp Val Thr Val Val Asp Phe Glu Leu Glu
Glu Cys Arg Tyr Met Thr 65 70 75 80 Glu Thr Phe Val Pro Gly Asn Gln
Pro Gly Glu Phe Thr Leu Gly Asp 85 90 95 Ile Lys Ser Ser Pro Gly
Trp Thr Ser Gln Leu Val Arg Val Val Ser 100 105 110 Thr Asn Tyr Asn
Gln His Ala Met Val Phe Phe Lys Gly Val Tyr Gln 115 120 125 Asn Arg
Glu Trp Phe His Ile Thr Leu Tyr Gly Arg Thr Lys Glu Leu 130 135 140
Thr Ser Glu Leu Lys Glu Asn Phe Ile Arg Phe Ser Lys Ser Leu Gly 145
150 155 160 Leu Pro Glu Asn His Ile Val Phe Pro Val Pro Ile Asp Gln
Cys Ile 165 170 175 Asp Gly 18178PRTArtificial SequenceNGAL mutein
Pvd type I binder 17 18Gln Asp Ser Thr Ser Asp Leu Ile Pro Ala Pro
Pro Leu Ser Lys Val 1 5 10 15 Pro Leu Gln Gln Asn Phe Gln Asp Asn
Gln Phe His Gly Lys Trp Tyr 20 25 30 Val Val Gly Leu Ala Gly Asn
Gly Trp Leu Arg Glu Asp Glu Asp Pro 35 40 45 Leu Lys Met Met Ala
Ala Val Tyr Glu Leu Arg Glu Asp Lys Ser Tyr 50 55 60 Gln Val Thr
Val Val Asp Phe Glu Leu Glu Glu Cys Arg Tyr Met Thr 65 70 75 80 Glu
Thr Phe Val Pro Gly Asn Gln Pro Gly Glu Phe Thr Leu Gly Asp 85 90
95 Ile Lys Ser Ser Pro Gly Trp Thr Ser Gln Leu Val Arg Val Val Ser
100 105 110 Thr Asn Tyr Asn Gln His Ala Met Val Phe Phe Lys Gly Val
Tyr Gln 115 120 125 Asn Arg Glu Trp Phe His Ile Thr Leu Tyr Gly Arg
Thr Lys Glu Leu 130 135 140 Thr Ser Glu Leu Lys Glu Asn Phe Ile Arg
Phe Ser Lys Ser Leu Gly 145 150 155 160 Leu Pro Glu Asn His Ile Val
Phe Pro Val Pro Ile Asp Gln Cys Ile 165 170 175 Asp Gly
19178PRTArtificial SequenceNGAL mutein Pvd type II binder 1 19Gln
Asp Ser Thr Ser Asp Leu Ile Pro Ala Pro Pro Leu Ser Lys Val 1 5 10
15 Pro Leu Gln Gln Asn Phe Gln Asp Asn Gln Phe His Gly Lys Trp Tyr
20 25 30 Val Val Gly Val Ala Gly Asn Glu Val Leu Arg Glu Asp Lys
Asp Pro 35 40 45 Gly Lys Met Pro Ala Thr Ile Tyr Glu Leu Lys Glu
Asp Lys Ser Tyr 50 55 60 Asn Val Thr Glu Val Arg Phe His Asn Lys
Lys Cys Asn Tyr Ser Ile 65 70 75 80 Glu Thr Phe Val Pro Gly Ser Gln
Pro Gly Glu Phe Thr Leu Gly Asn 85 90 95 Ile Lys Ser Asn Pro Gly
Gln Thr Ser Met Leu Val Arg Val Val Ser 100 105 110 Thr Asn Tyr Asn
Gln His Ala Met Val Phe Phe Lys Lys Val Lys Gln 115 120 125 Asn Arg
Glu Gly Phe Trp Ile Thr Leu Tyr Gly Arg Thr Lys Glu Leu 130 135 140
Thr Ser Glu Leu Lys Glu Asn Phe Ile Arg Phe Ser Lys Ser Leu Gly 145
150 155 160 Leu Pro Glu Asn His Ile Val Phe Pro Val Pro Ile Asp Gln
Cys Ile 165 170 175 Asp Gly 20178PRTArtificial SequenceNGAL mutein
Pvd type II binder 2 20Gln Asp Ser Thr Ser Asp Leu Ile Pro Ala Pro
Pro Leu Ser Lys Val 1 5 10 15 Pro Leu Gln Gln Asn Phe Gln Asp Asn
Gln Phe His Gly Lys Trp Tyr 20 25 30 Val Val Gly Leu Ala Gly Asn
Thr Ile Leu Arg Glu Asp Lys Asp Pro 35 40 45 Gly Lys Met Asn Ala
Thr Ile Tyr Glu Leu Lys Glu Asp Lys Ser Tyr 50 55 60 Asn Val Thr
Asp Val Arg Phe Ile Met Lys Lys Cys His Tyr Tyr Ile 65 70 75 80 Glu
Thr Phe Val Pro Gly Ser Gln Pro Gly Glu Phe Thr Leu Gly Ile 85 90
95 Ile Lys Ser Asn Pro Gly Thr Thr Ser Gln Leu Val Arg Val Val Ser
100 105 110 Thr Asn Tyr Asn Gln His Ala Met Val Phe Phe Lys Ile Val
Arg Gln 115 120 125 Asn Arg Glu Met Phe Trp Ile Thr Leu Tyr Gly Arg
Thr Lys Glu Leu 130 135 140 Thr Ser Glu Leu Lys Glu Asn Phe Ile Arg
Phe Ser Lys Ser Leu Gly 145 150 155 160 Leu Pro Glu Asn His Ile Val
Phe Pro Val Pro Ile Asp Gln Cys Ile 165 170 175 Asp Gly
21178PRTArtificial SequenceNGAL mutein Pvd type II binder 3 21Gln
Asp Ser Thr Ser Asp Leu Ile Pro Ala Pro Pro Leu Ser Lys Val 1 5 10
15 Pro Leu Gln Gln Asn Phe Gln Asp Asn Gln Phe His Gly Lys Trp Tyr
20 25 30 Val Val Gly Ile Ala Gly Asn Thr Val Leu Arg Glu Asp Lys
Asp Pro 35 40 45 Gly Lys Met Pro Ala Thr Ile Tyr Glu Leu Lys Glu
Asp Lys Ser Tyr 50 55 60 Asn Val Thr Glu Val Arg Phe Ala Pro Lys
Lys Cys Ile Tyr Ser Ile 65 70 75 80 Ser Thr Phe Val Pro Gly Ser Gln
Pro Gly Glu Phe Thr Leu Gly Met 85 90 95 Ile Lys Ser Ser Pro Gly
Gly Thr Ser Ala Leu Val Arg Val Val Ser 100 105 110 Thr Asn Tyr Asn
Gln His Ala Met Val Phe Phe Lys Lys Val Ser Gln 115 120 125 Asn Arg
Glu Val Phe Trp Ile Thr Leu Tyr Gly Arg Thr Lys Glu Leu 130 135 140
Thr Ser Glu Leu Lys Glu Asn Phe Ile Arg Phe Ser Lys Ser Leu Gly 145
150 155 160 Leu Pro Glu Asn His Ile Val Phe Pro Val Pro Ile Asp Gln
Cys Ile 165 170 175 Asp Gly 22178PRTArtificial SequenceNGAL mutein
Pvd type II binder 4 22Gln Asp Ser Thr Ser Asp Leu Ile Pro Ala Pro
Pro Leu Ser Lys Val 1 5 10 15 Pro Leu Gln Gln Asn Phe Gln Asp Asn
Gln Phe His Gly Lys Trp Tyr 20 25 30 Val Val Gly Leu Ala Gly Asn
Asn Ile Leu Arg Glu Asp Lys Asp Pro 35 40 45 Ala Lys Met Pro Ala
Thr Ile Tyr Glu Leu Lys Glu Asp Lys Ser Tyr 50 55 60 Asn Val Thr
Glu Val Arg Phe Ser Gln Lys Lys Cys Met Tyr Ala Ile 65 70 75 80 Tyr
Thr Phe Val Pro Gly Ser Gln Pro Gly Glu Phe Thr Leu Gly Arg 85 90
95 Ile Lys Ser Pro Pro Gly Thr Thr Ser Ile Leu Val Arg Val Val Ser
100 105 110 Thr Asn Tyr Asn Gln His Ala Met Val Phe Phe Lys Lys Val
Met Gln 115 120 125 Asn Arg Glu Phe Phe Trp Ile Thr Leu Tyr Gly Arg
Thr Lys Glu Leu 130 135 140 Thr Ser Glu Leu Lys Glu Asn Phe Ile Arg
Phe Ser Lys Ser Leu Gly 145 150 155 160 Leu Pro Glu Asn His Ile Val
Phe Pro Val Pro Ile Asp Gln Cys Ile 165 170 175 Asp Gly
23178PRTArtificial SequenceNGAL mutein Pvd type II binder 5 23Gln
Asp Ser Thr Ser Asp Leu Ile Pro Ala Pro Pro Leu Ser Lys Val 1 5 10
15 Pro Leu Gln Gln Asn Phe Gln Asp Asn Gln Phe His Gly Lys Trp Tyr
20 25 30 Val Val Gly Leu Ala Gly Asn His Ile Leu Arg Glu Asp Lys
Asp Pro 35 40 45 Ala Lys Met Pro Ala Thr Ile Tyr Glu Leu Lys Glu
Asp Lys Ser Tyr 50 55 60 Asn Val Thr Glu Val Arg Phe Gly Arg Lys
Lys Cys His Tyr Trp Ile 65 70 75 80 Glu Thr Phe Val Pro Gly Ser Gln
Pro Gly Glu Phe Thr Leu Gly Arg 85 90 95 Ile Lys Ser Asp Pro Gly
Met Thr Ser Phe Leu Val Arg Val Val Ser 100 105 110 Thr Asn Tyr Asn
Gln His Ala Met Val Phe Phe Lys Ala Val Asp Gln 115 120 125 Asn Arg
Glu Asn Phe Trp Ile Thr Leu Tyr Gly Arg Thr Lys Glu Leu 130 135 140
Thr Ser Glu Leu Lys Glu Asn Phe Ile Arg Phe Ser Lys Ser Leu Gly 145
150 155 160 Leu Pro Glu Asn His Ile Val Phe Pro Val Pro Ile Asp Gln
Cys Ile 165 170 175 Asp Gly 24178PRTArtificial SequenceNGAL mutein
Pvd type II binder 6 24Gln Asp Ser Thr Ser Asp Leu Ile Pro Ala Pro
Pro Leu Ser Lys Val 1 5 10 15 Pro Leu Gln Gln Asn Phe Gln Asp Asn
Gln Phe His Gly Lys Trp Tyr 20 25 30 Val Val Gly Asn Ala Gly Asn
Gly Arg Leu Arg Glu Asp Lys Asp Pro 35 40 45 Pro Lys Met Trp Ala
Thr Ile Tyr Glu Leu Lys Glu Asp Lys Ser Tyr 50 55 60 Asn Val Thr
Arg Val Trp Phe Asn Gln Lys Lys Cys Lys Tyr Asp Ile 65 70 75 80 Glu
Thr Phe Val Pro Gly Ser Gln Pro Gly Glu Phe Thr Leu Gly Asp 85 90
95 Ile Lys Ser Thr Pro Gly Trp Thr Ser Asn Leu Val Arg Val Val Ser
100 105 110 Thr Asn Tyr Asn Gln His Ala Met Val Phe Phe Lys Asn Val
Met Gln 115 120 125 Asn Arg Glu Ile Phe Tyr Ile Thr Leu Tyr Gly Arg
Thr Lys Glu Leu 130 135 140 Thr Ser Glu Leu Lys Glu Asn Phe Ile Arg
Phe Ser Lys Ser Leu Gly 145 150 155 160 Leu Pro Glu Asn His Ile Val
Phe Pro Val Pro Ile Asp Gln Cys Ile 165 170 175 Asp Gly
25178PRTArtificial SequenceNGAL mutein Pvd type II binder 7 25Gln
Asp Ser Thr Ser Asp Leu Ile Pro Ala Pro Pro Leu Ser Lys Val 1 5 10
15 Pro Leu Gln Gln Asn Phe Gln Asp Asn Gln Phe His Gly Lys Trp Tyr
20 25 30 Val Val Gly Val Ala Gly Asn Thr Thr Leu Arg Glu Asp Lys
Asp Pro 35 40 45 Gly Lys Met Gly Ala Thr Ile Tyr Glu Leu Lys Glu
Asp Lys Ser Tyr 50 55 60 Asn Val Thr Glu Val Arg Phe Gly Arg Lys
Lys Cys Gly Tyr Trp Ile 65 70 75 80 Glu Thr Phe Val Pro Gly Ser Gln
Pro Gly Glu Phe Thr Leu Gly Ala 85 90 95 Ile Lys Ser Trp Pro Gly
Ile Thr Ser Gly Leu Val Arg Val Val Ser 100 105 110 Thr Asn Tyr Asn
Gln His Ala Met Val Phe Phe Lys Lys Val Asn Gln 115 120 125 Asn Arg
Glu Val Phe Trp Ile Thr Leu Tyr Gly Arg Thr Lys Glu Leu 130 135 140
Thr Ser Glu Leu Lys Glu Asn Phe Ile Arg Phe Ser Lys Ser Leu Gly 145
150 155 160 Leu Pro Glu Asn His
Ile Val Phe Pro Val Pro Ile Asp Gln Cys Ile 165 170 175 Asp Gly
26178PRTArtificial SequenceNGAL mutein Pvd type II binder 8 26Gln
Asp Ser Thr Ser Asp Leu Ile Pro Ala Pro Pro Leu Ser Lys Val 1 5 10
15 Pro Leu Gln Gln Asn Phe Gln Asp Asn Gln Phe His Gly Lys Trp Tyr
20 25 30 Val Val Gly Val Ala Gly Asn Glu Val Leu Arg Asp Asp Lys
Asp Pro 35 40 45 Gly Lys Met Pro Ala Thr Ile Tyr Glu Leu Lys Glu
Asp Lys Ser Tyr 50 55 60 Asn Val Thr Glu Val Arg Phe His Asn Lys
Lys Cys Asn Tyr Ser Ile 65 70 75 80 Glu Thr Phe Val Pro Gly Ser Gln
Pro Gly Glu Phe Thr Leu Gly Lys 85 90 95 Ile Lys Ser Asn Pro Gly
Val Thr Ser Met Leu Val Arg Val Val Ser 100 105 110 Thr Asn Tyr Asn
Gln His Ala Met Val Phe Phe Lys Asn Val Lys Gln 115 120 125 Asn Arg
Glu Gly Phe Trp Ile Thr Leu Tyr Gly Arg Thr Lys Glu Leu 130 135 140
Thr Ser Glu Leu Lys Glu Asn Phe Ile Arg Phe Ser Lys Ser Leu Gly 145
150 155 160 Leu Pro Glu Asn His Ile Val Phe Pro Val Pro Ile Asp Gln
Cys Ile 165 170 175 Asp Gly 27178PRTArtificial SequenceNGAL mutein
Pvd type II binder 9 27Gln Asp Ser Thr Ser Asp Leu Ile Pro Ala Pro
Pro Leu Ser Lys Val 1 5 10 15 Pro Leu Gln Gln Asn Phe Gln Asp Asn
Gln Phe His Gly Lys Trp Tyr 20 25 30 Val Val Gly Val Ala Gly Asn
Thr Val Leu Arg Asp Asp Lys Asp Pro 35 40 45 Gly Lys Met Pro Ala
Thr Ile Tyr Glu Leu Lys Glu Asp Lys Ser Tyr 50 55 60 Asn Val Thr
Glu Val Arg Phe His Asn Lys Lys Cys Asn Tyr Ser Ile 65 70 75 80 Glu
Thr Phe Val Pro Gly Ser Gln Pro Gly Glu Phe Thr Leu Gly Asn 85 90
95 Ile Lys Ser Tyr Pro Gly Gln Thr Ser Met Leu Val Arg Val Val Ser
100 105 110 Thr Asn Tyr Asn Gln His Ala Met Val Phe Phe Lys Lys Val
Lys Gln 115 120 125 Asn Arg Glu Val Phe Trp Ile Thr Leu Tyr Gly Arg
Thr Lys Glu Leu 130 135 140 Thr Ser Glu Leu Lys Glu Asn Phe Ile Arg
Phe Ser Lys Ser Leu Gly 145 150 155 160 Leu Pro Glu Asn His Ile Val
Phe Pro Val Pro Ile Asp Gln Cys Ile 165 170 175 Asp Gly
28178PRTArtificial SequenceNGAL mutein Pvd type II binder 10 28Gln
Asp Ser Thr Ser Asp Leu Ile Pro Ala Pro Pro Leu Ser Lys Val 1 5 10
15 Pro Leu Gln Gln Asn Phe Gln Asp Asn Gln Phe His Gly Lys Trp Tyr
20 25 30 Val Val Gly Val Ala Gly Asn Thr Val Leu Arg Asp Asp Lys
Asp Pro 35 40 45 Gly Lys Met Pro Ala Thr Ile Tyr Glu Leu Lys Glu
Asp Lys Ser Tyr 50 55 60 Asn Val Thr Glu Val Arg Phe His Lys Lys
Lys Cys Asn Tyr Phe Ile 65 70 75 80 Glu Thr Phe Val Pro Gly Ser Gln
Pro Gly Glu Phe Thr Leu Gly Lys 85 90 95 Ile Lys Ser His Pro Gly
Gln Thr Ser Met Leu Val Arg Val Val Ser 100 105 110 Thr Asn Tyr Asn
Gln His Ala Met Val Phe Phe Lys Lys Val Lys Gln 115 120 125 Asn Arg
Glu Ala Phe Trp Ile Thr Leu Tyr Gly Arg Thr Lys Glu Leu 130 135 140
Thr Ser Glu Leu Lys Glu Asn Phe Ile Arg Phe Ser Lys Ser Leu Gly 145
150 155 160 Leu Pro Glu Asn His Ile Val Phe Pro Val Pro Ile Asp Gln
Cys Ile 165 170 175 Asp Gly 29178PRTArtificial SequenceNGAL mutein
Pvd type II binder 11 29Gln Asp Ser Thr Ser Asp Leu Ile Pro Ala Pro
Pro Leu Ser Lys Val 1 5 10 15 Pro Leu Gln Gln Asn Phe Gln Asp Asn
Gln Phe His Gly Lys Trp Tyr 20 25 30 Val Val Gly Val Ala Gly Asn
Gln Val Leu Arg Asp Asp Lys Asp Pro 35 40 45 Gly Lys Met Pro Ala
Thr Ile Tyr Glu Leu Lys Glu Asp Lys Ser Tyr 50 55 60 Asn Val Thr
Glu Val Arg Phe His Asn Lys Lys Cys Asn Tyr Trp Ile 65 70 75 80 Glu
Thr Phe Val Pro Gly Ser Gln Pro Gly Glu Phe Thr Leu Gly Asn 85 90
95 Ile Lys Ser Asn Pro Gly His Thr Ser Met Leu Val Arg Val Val Ser
100 105 110 Thr Asn Tyr Asn Gln His Ala Met Val Phe Phe Lys Lys Val
Lys Gln 115 120 125 Asn Arg Glu Gly Phe Trp Ile Thr Leu Tyr Gly Arg
Thr Lys Glu Leu 130 135 140 Thr Ser Glu Leu Lys Glu Asn Phe Ile Arg
Phe Ser Lys Ser Leu Gly 145 150 155 160 Leu Pro Glu Asn His Ile Val
Phe Pro Val Pro Ile Asp Gln Cys Ile 165 170 175 Asp Gly
30178PRTArtificial SequenceNGAL mutein Pvd type II binder 12 30Gln
Asp Ser Thr Ser Asp Leu Ile Pro Ala Pro Pro Leu Ser Lys Val 1 5 10
15 Pro Leu Gln Gln Asn Phe Gln Asp Asn Gln Phe His Gly Lys Trp Tyr
20 25 30 Val Val Gly Val Ala Gly Asn Thr Ile Leu Arg Glu Asp Lys
Asp Pro 35 40 45 Gly Lys Met Asn Ala Thr Ile Tyr Glu Leu Lys Glu
Asp Lys Ser Tyr 50 55 60 Asn Val Thr Asp Val Arg Phe Ile Phe Lys
Lys Cys His Tyr Tyr Ile 65 70 75 80 Asp Thr Phe Val Pro Gly Ser Gln
Pro Gly Glu Phe Thr Leu Gly Asn 85 90 95 Ile Lys Ser Tyr Pro Gly
Met Thr Ser Gln Leu Val Arg Val Val Ser 100 105 110 Thr Asn Tyr Asn
Gln His Ala Met Val Phe Phe Lys Ile Val Arg Gln 115 120 125 Asn Arg
Glu Ile Phe Trp Ile Thr Leu Tyr Gly Arg Thr Lys Glu Leu 130 135 140
Thr Ser Glu Leu Lys Glu Asn Phe Ile Arg Phe Ser Lys Ser Leu Gly 145
150 155 160 Leu Pro Glu Asn His Ile Val Phe Pro Val Pro Ile Asp Gln
Cys Ile 165 170 175 Asp Gly 31178PRTArtificial SequenceNGAL mutein
Pvd type II binder 13 31Gln Asp Ser Thr Ser Asp Leu Ile Pro Ala Pro
Pro Leu Ser Lys Val 1 5 10 15 Pro Leu Gln Gln Asn Phe Gln Asp Asn
Gln Phe His Gly Lys Trp Tyr 20 25 30 Val Val Gly Val Ala Gly Asn
Thr Ile Leu Arg Glu Asp Lys Asp Pro 35 40 45 Gly Lys Met Asn Ala
Thr Ile Tyr Glu Leu Lys Glu Asp Lys Ser Tyr 50 55 60 Asn Val Thr
Asp Val Arg Phe Ile Arg Lys Lys Cys His Tyr Tyr Ile 65 70 75 80 Asp
Thr Phe Val Pro Gly Ser Gln Pro Gly Glu Phe Thr Leu Gly Asn 85 90
95 Ile Lys Ser Tyr Pro Gly Thr Thr Ser Gln Leu Val Arg Val Val Ser
100 105 110 Thr Asn Tyr Asn Gln His Ala Met Val Phe Phe Lys Ile Val
Arg Gln 115 120 125 Asn Arg Glu Ile Phe Trp Ile Thr Leu Tyr Gly Arg
Thr Lys Glu Leu 130 135 140 Thr Ser Glu Leu Lys Glu Asn Phe Ile Arg
Phe Ser Lys Ser Leu Gly 145 150 155 160 Leu Pro Glu Asn His Ile Val
Phe Pro Val Pro Ile Asp Gln Cys Ile 165 170 175 Asp Gly
32178PRTArtificial SequenceNGAL mutein Pvd type II binder 14 32Gln
Asp Ser Thr Ser Asp Leu Ile Pro Ala Pro Pro Leu Ser Lys Val 1 5 10
15 Pro Leu Gln Gln Asn Phe Gln Asp Asn Gln Phe His Gly Lys Trp Tyr
20 25 30 Val Val Gly Val Ala Gly Asn Glu Val Leu Arg Asp Asp Lys
Asp Pro 35 40 45 Gly Lys Met Pro Ala Thr Ile Tyr Glu Leu Lys Glu
Asp Lys Ser Tyr 50 55 60 Asp Val Thr Glu Val Arg Phe His Asn Lys
Lys Cys Asn Tyr Phe Ile 65 70 75 80 Glu Thr Phe Val Pro Gly Ser Gln
Pro Gly Glu Phe Thr Leu Gly Lys 85 90 95 Ile Lys Ser Asn Pro Gly
Val Thr Ser Met Leu Val Arg Val Val Ser 100 105 110 Thr Asn Tyr Asn
Gln His Ala Met Val Phe Phe Lys Asn Val Lys Gln 115 120 125 Asn Arg
Glu Gly Phe Trp Ile Thr Leu Tyr Gly Arg Thr Lys Glu Leu 130 135 140
Thr Ser Glu Leu Lys Glu Asn Phe Ile Arg Phe Ser Lys Ser Leu Gly 145
150 155 160 Leu Pro Glu Asn His Ile Val Phe Pro Val Pro Ile Asp Gln
Cys Ile 165 170 175 Asp Gly 33178PRTArtificial SequenceNGAL mutein
Pvd type II binder 15 33Gln Asp Ser Thr Ser Asp Leu Ile Pro Ala Pro
Pro Leu Ser Lys Val 1 5 10 15 Pro Leu Gln Gln Asn Phe Gln Asp Asn
Gln Phe His Gly Lys Trp Tyr 20 25 30 Val Val Gly Val Ala Gly Asn
Glu Val Leu Arg Asp Asp Lys Asp Pro 35 40 45 Gly Lys Met Pro Ala
Thr Ile Tyr Glu Leu Lys Glu Asp Lys Ser Tyr 50 55 60 Gln Val Thr
Glu Val Arg Phe His Asn Lys Lys Cys Asn Tyr Phe Ile 65 70 75 80 Glu
Thr Phe Val Pro Gly Ser Gln Pro Gly Glu Phe Thr Leu Gly Lys 85 90
95 Ile Lys Ser Asn Pro Gly Val Thr Ser Met Leu Val Arg Val Val Ser
100 105 110 Thr Asn Tyr Asn Gln His Ala Met Val Phe Phe Lys Asn Val
Lys Gln 115 120 125 Asn Arg Glu Gly Phe Trp Ile Thr Leu Tyr Gly Arg
Thr Lys Glu Leu 130 135 140 Thr Ser Glu Leu Lys Glu Asn Phe Ile Arg
Phe Ser Lys Ser Leu Gly 145 150 155 160 Leu Pro Glu Asn His Ile Val
Phe Pro Val Pro Ile Asp Gln Cys Ile 165 170 175 Asp Gly
34178PRTArtificial SequenceNGAL mutein Pvd type II binder 16 34Gln
Asp Ser Thr Ser Asp Leu Ile Pro Ala Pro Pro Leu Ser Lys Val 1 5 10
15 Pro Leu Gln Gln Asn Phe Gln Asp Asn Gln Phe His Gly Lys Trp Tyr
20 25 30 Val Val Gly Val Ala Gly Asn Thr Ile Leu Arg Glu Asp Lys
Asp Pro 35 40 45 Gly Lys Met Asn Ala Ala Ile Tyr Glu Leu Lys Glu
Asp Lys Ser Tyr 50 55 60 Asp Val Thr Asp Val Arg Phe Ile Arg Lys
Lys Cys His Tyr Tyr Ile 65 70 75 80 Asp Thr Phe Val Pro Gly Ser Gln
Pro Gly Glu Phe Thr Leu Gly Asn 85 90 95 Ile Lys Ser Tyr Pro Gly
Thr Thr Ser Gln Leu Val Arg Val Val Ser 100 105 110 Thr Asn Tyr Asn
Gln His Ala Met Val Phe Phe Lys Ile Val Arg Gln 115 120 125 Asn Arg
Glu Ile Phe Trp Ile Thr Leu Tyr Gly Arg Thr Lys Glu Leu 130 135 140
Thr Ser Glu Leu Lys Glu Asn Phe Ile Arg Phe Ser Lys Ser Leu Gly 145
150 155 160 Leu Pro Glu Asn His Ile Val Phe Pro Val Pro Ile Asp Gln
Cys Ile 165 170 175 Asp Gly 35178PRTArtificial SequenceNGAL mutein
Pvd type II binder 17 35Gln Asp Ser Thr Ser Asp Leu Ile Pro Ala Pro
Pro Leu Ser Lys Val 1 5 10 15 Pro Leu Gln Gln Asn Phe Gln Asp Asn
Gln Phe His Gly Lys Trp Tyr 20 25 30 Val Val Gly Val Ala Gly Asn
Thr Ile Leu Arg Glu Asp Lys Asp Pro 35 40 45 Gly Lys Met Asn Ala
Ala Ile Tyr Glu Leu Lys Glu Asp Lys Ser Tyr 50 55 60 Gln Val Thr
Asp Val Arg Phe Ile Arg Lys Lys Cys His Tyr Tyr Ile 65 70 75 80 Asp
Thr Phe Val Pro Gly Ser Gln Pro Gly Glu Phe Thr Leu Gly Asn 85 90
95 Ile Lys Ser Tyr Pro Gly Thr Thr Ser Gln Leu Val Arg Val Val Ser
100 105 110 Thr Asn Tyr Asn Gln His Ala Met Val Phe Phe Lys Ile Val
Arg Gln 115 120 125 Asn Arg Glu Ile Phe Trp Ile Thr Leu Tyr Gly Arg
Thr Lys Glu Leu 130 135 140 Thr Ser Glu Leu Lys Glu Asn Phe Ile Arg
Phe Ser Lys Ser Leu Gly 145 150 155 160 Leu Pro Glu Asn His Ile Val
Phe Pro Val Pro Ile Asp Gln Cys Ile 165 170 175 Asp Gly
36178PRTArtificial SequenceNGAL mutein Pvd type II binder 18 36Gln
Asp Ser Thr Ser Asp Leu Ile Pro Ala Pro Pro Leu Ser Lys Val 1 5 10
15 Pro Leu Gln Gln Asn Phe Gln Asp Asn Gln Phe Gln Gly Lys Trp Tyr
20 25 30 Val Val Gly Val Ala Gly Asn Thr Ile Leu Arg Glu Asp Lys
Asp Pro 35 40 45 Gly Lys Met Asn Ala Ala Ile Tyr Glu Leu Lys Glu
Asp Lys Ser Tyr 50 55 60 Asp Val Thr Asp Val Arg Phe Ile Arg Lys
Lys Cys His Tyr Tyr Ile 65 70 75 80 Asp Thr Phe Val Pro Gly Ser Gln
Pro Gly Glu Phe Thr Leu Gly Asn 85 90 95 Ile Lys Ser Tyr Pro Gly
Thr Thr Ser Gln Leu Val Arg Val Val Ser 100 105 110 Thr Asn Tyr Asn
Gln His Ala Met Val Phe Phe Lys Ile Val Arg Gln 115 120 125 Asn Arg
Glu Ile Phe Trp Ile Thr Leu Tyr Gly Arg Thr Lys Glu Leu 130 135 140
Thr Ser Glu Leu Lys Glu Asn Phe Ile Arg Phe Ser Lys Ser Leu Gly 145
150 155 160 Leu Pro Glu Asn His Ile Val Phe Pro Val Pro Ile Asp Gln
Cys Ile 165 170 175 Asp Gly 37178PRTArtificial SequenceNGAL mutein
Pvd type II binder 19 37Gln Asp Ser Thr Ser Asp Leu Ile Pro Ala Pro
Pro Leu Ser Lys Val 1 5 10 15 Pro Leu Gln Gln Asn Phe Gln Asp Asn
Gln Phe His Gly Lys Trp Tyr 20 25 30 Val Val Gly Val Ala Gly Asn
Thr Ile Leu Arg Glu Asp Lys Asp Pro 35 40 45 Gly Lys Met Asn Ala
Thr Ile Tyr Glu Leu Lys Glu Asp Lys Ser Tyr 50 55 60 Gln Val Thr
Asp Val Arg Phe Ile Arg Lys Lys Cys His Tyr Tyr Ile 65 70 75 80 Asp
Thr Phe Val Pro Gly Ser Gln Pro Gly Glu Phe Thr Leu Gly Asn 85 90
95 Ile Lys Ser Tyr Pro Gly Thr Thr Ser Gln Leu Val Arg Val Val Ser
100 105 110 Thr Asn Tyr Asn Gln His Ala Met Val Phe Phe Lys Ile Val
Arg Gln 115 120 125 Asn Arg Glu Ile Phe Trp Ile Thr Leu Tyr Gly Arg
Thr Lys Glu Leu 130 135 140 Thr Ser Glu Leu Lys Glu Asn Phe Ile Arg
Phe Ser Lys Ser Leu Gly 145 150 155 160 Leu Pro Glu Asn His Ile Val
Phe Pro Val Pro Ile Asp Gln Cys Ile 165 170 175 Asp Gly
38178PRTArtificial SequenceNGAL mutein Pvd type III binder 1 38Gln
Asp Ser Thr Ser Asp Leu Ile Pro Ala Pro Pro Leu Ser Lys Val 1 5 10
15 Pro Leu Gln Gln Asn Phe Gln Asp Asn Gln Phe His Gly Lys Trp Tyr
20 25 30 Val Val Gly Phe Ala Gly Asn Trp Met Leu Arg Glu Asp Lys
Asp Pro 35 40 45 His Lys Met Asn Ala Thr
Ile Tyr Glu Leu Lys Glu Asp Lys Ser Tyr 50 55 60 Asn Val Thr Glu
Val Lys Phe Gln Ala Lys Lys Cys Ile Tyr Ser Ile 65 70 75 80 His Thr
Phe Val Pro Gly Ser Gln Pro Gly Glu Phe Thr Leu Gly Ile 85 90 95
Ile Lys Ser Asn Pro Gly Gly Thr Ser Glu Leu Val Arg Val Val Ser 100
105 110 Thr Asn Tyr Asn Gln His Ala Met Val Phe Phe Lys Trp Val His
Gln 115 120 125 Asn Arg Glu Phe Phe Gln Ile Thr Leu Tyr Gly Arg Thr
Lys Glu Leu 130 135 140 Thr Ser Glu Leu Lys Glu Asn Phe Ile Arg Phe
Ser Lys Ser Leu Gly 145 150 155 160 Leu Pro Glu Asn His Ile Val Phe
Pro Val Pro Ile Asp Gln Cys Ile 165 170 175 Asp Gly
39178PRTArtificial SequenceNGAL mutein Pvd type III binder 2 39Gln
Asp Ser Thr Ser Asp Leu Ile Pro Ala Pro Pro Leu Ser Lys Val 1 5 10
15 Pro Leu Gln Gln Asn Phe Gln Asp Asn Gln Phe His Gly Lys Trp Tyr
20 25 30 Val Val Gly Phe Ala Gly Asn Arg Trp Leu Arg Glu Asp Lys
Asp Pro 35 40 45 Ile Lys Met Tyr Ala Thr Ile Tyr Glu Leu Lys Glu
Asp Lys Ser Tyr 50 55 60 Asn Val Thr Gln Val Asn Phe Trp Leu Lys
Lys Cys Ala Tyr Ser Ile 65 70 75 80 Ser Thr Phe Val Pro Gly Ser Gln
Pro Gly Glu Phe Thr Leu Gly Arg 85 90 95 Ile Lys Ser Ile Pro Gly
Pro Thr Ser Glu Leu Val Arg Val Val Ser 100 105 110 Thr Asn Tyr Asn
Gln His Ala Met Val Phe Phe Lys Thr Val Ile Gln 115 120 125 Asn Arg
Glu Phe Phe Glu Ile Thr Leu Tyr Gly Arg Thr Lys Glu Leu 130 135 140
Thr Ser Glu Leu Lys Glu Asn Phe Ile Arg Phe Ser Lys Ser Leu Gly 145
150 155 160 Leu Pro Glu Asn His Ile Val Phe Pro Val Pro Ile Asp Gln
Cys Ile 165 170 175 Asp Gly 40178PRTArtificial SequenceNGAL mutein
Pvd type III binder 2 40Gln Asp Ser Thr Ser Asp Leu Ile Pro Ala Pro
Pro Leu Ser Lys Val 1 5 10 15 Pro Leu Gln Gln Asn Phe Gln Asp Asn
Gln Phe His Gly Lys Trp Tyr 20 25 30 Val Val Gly Phe Ala Gly Asn
Leu Leu Leu Arg Glu Asp Lys Asp Pro 35 40 45 Arg Lys Met Arg Ala
Thr Ile Tyr Glu Leu Lys Glu Asp Lys Ser Tyr 50 55 60 Asn Val Thr
Asp Val Arg Phe Leu Tyr Lys Lys Cys Ile Tyr Ser Ile 65 70 75 80 Ala
Thr Phe Val Pro Gly Ser Gln Pro Gly Glu Phe Thr Leu Gly Gly 85 90
95 Ile Lys Ser Ala Pro Gly Phe Thr Ser Glu Leu Val Arg Val Val Ser
100 105 110 Thr Asn Tyr Asn Gln His Ala Met Val Phe Phe Lys Trp Val
Ala Gln 115 120 125 Asn Arg Glu Tyr Phe Glu Ile Thr Leu Tyr Gly Arg
Thr Lys Glu Leu 130 135 140 Thr Ser Glu Leu Lys Glu Asn Phe Ile Arg
Phe Ser Lys Ser Leu Gly 145 150 155 160 Leu Pro Glu Asn His Ile Val
Phe Pro Val Pro Ile Asp Gln Cys Ile 165 170 175 Asp Gly
41178PRTArtificial SequenceNGAL mutein Pvd type III binder 4 41Gln
Asp Ser Thr Ser Asp Leu Ile Pro Ala Pro Pro Leu Ser Lys Val 1 5 10
15 Pro Leu Gln Gln Asn Phe Gln Asp Asn Gln Phe His Gly Lys Trp Tyr
20 25 30 Val Val Gly Phe Ala Gly Asn Trp Arg Leu Arg Glu Asp Lys
Asp Pro 35 40 45 Pro Lys Met Ser Ala Thr Ile Tyr Glu Leu Lys Glu
Asp Lys Ser Tyr 50 55 60 Asn Val Thr Asn Val Arg Phe Trp Pro Lys
Lys Cys Arg Tyr Ser Ile 65 70 75 80 Ser Thr Phe Val Pro Gly Ser Gln
Pro Gly Glu Phe Thr Leu Gly Met 85 90 95 Ile Lys Ser Pro Pro Gly
Gly Thr Ser Glu Leu Val Arg Val Val Ser 100 105 110 Thr Asn Tyr Asn
Gln His Ala Met Val Phe Phe Lys Trp Val Phe Gln 115 120 125 Asn Arg
Glu Phe Phe Glu Ile Thr Leu Tyr Gly Arg Thr Lys Glu Leu 130 135 140
Thr Ser Glu Leu Lys Glu Asn Phe Ile Arg Phe Ser Lys Ser Leu Gly 145
150 155 160 Leu Pro Glu Asn His Ile Val Phe Pro Val Pro Ile Asp Gln
Cys Ile 165 170 175 Asp Gly 42178PRTArtificial SequenceNGAL mutein
Pvd type III binder 5 42Gln Asp Ser Thr Ser Asp Leu Ile Pro Ala Pro
Pro Leu Ser Lys Val 1 5 10 15 Pro Leu Gln Gln Asn Phe Gln Asp Asn
Gln Phe His Gly Lys Trp Tyr 20 25 30 Val Val Gly Glu Ala Gly Asn
Leu Ala Leu Arg Glu Asp Lys Asp Pro 35 40 45 Lys Lys Met Met Ala
Thr Ile Tyr Glu Leu Lys Glu Asp Lys Ser Tyr 50 55 60 Asn Val Thr
Glu Val Arg Phe Arg His Lys Lys Cys Gln Tyr Asp Ile 65 70 75 80 Ala
Thr Phe Val Pro Gly Ser Gln Pro Gly Glu Phe Thr Leu Gly Leu 85 90
95 Ile Lys Ser Asp Pro Gly Gln Thr Ser Glu Leu Val Arg Val Val Ser
100 105 110 Thr Asn Tyr Asn Gln His Ala Met Val Phe Phe Lys Lys Val
Val Gln 115 120 125 Asn Arg Glu Phe Phe Trp Ile Thr Leu Tyr Gly Arg
Thr Lys Glu Leu 130 135 140 Thr Ser Glu Leu Lys Glu Asn Phe Ile Arg
Phe Ser Lys Ser Leu Gly 145 150 155 160 Leu Pro Glu Asn His Ile Val
Phe Pro Val Pro Ile Asp Gln Cys Ile 165 170 175 Asp Gly
43178PRTArtificial SequenceNGAL mutein Pvd type III binder 6 43Gln
Asp Ser Thr Ser Asp Leu Ile Pro Ala Pro Pro Leu Ser Lys Val 1 5 10
15 Pro Leu Gln Gln Asn Phe Gln Asp Asn Gln Phe His Gly Lys Trp Tyr
20 25 30 Val Val Gly Glu Ala Gly Asn Leu Ala Leu Arg Glu Asp Lys
Asp Pro 35 40 45 Met Lys Met Met Ala Thr Ile Tyr Glu Leu Lys Glu
Asp Lys Ser Tyr 50 55 60 Asn Val Thr Glu Val Arg Phe Arg Gln Lys
Lys Cys Lys Tyr Asp Ile 65 70 75 80 Val Thr Phe Val Pro Gly Ser Gln
Pro Gly Glu Phe Thr Leu Gly Leu 85 90 95 Ile Lys Ser Asp Pro Gly
Gln Thr Ser Glu Leu Val Arg Val Val Ser 100 105 110 Thr Asn Tyr Asn
Gln His Ala Met Val Phe Phe Lys Lys Val Val Gln 115 120 125 Asn Arg
Glu Tyr Phe Trp Ile Thr Leu Tyr Gly Arg Thr Lys Glu Leu 130 135 140
Thr Ser Glu Leu Lys Glu Asn Phe Ile Arg Phe Ser Lys Ser Leu Gly 145
150 155 160 Leu Pro Glu Asn His Ile Val Phe Pro Val Pro Ile Asp Gln
Cys Ile 165 170 175 Asp Gly 44178PRTArtificial SequenceNGAL mutein
Pvd type III binder 7 44Gln Asp Ser Thr Ser Asp Leu Ile Pro Ala Pro
Pro Leu Ser Lys Val 1 5 10 15 Pro Leu Gln Gln Asn Phe Gln Asp Asn
Gln Phe His Gly Lys Trp Tyr 20 25 30 Val Val Gly Glu Ala Gly Asn
Leu Thr Leu Arg Glu Asp Lys Asp Pro 35 40 45 Met Lys Met Met Ala
Thr Ile Tyr Glu Leu Lys Glu Asp Lys Ser Tyr 50 55 60 Asn Val Thr
Glu Val Arg Phe Arg Arg Lys Lys Cys Lys Tyr Asp Ile 65 70 75 80 Val
Thr Phe Val Pro Gly Ser Gln Pro Gly Glu Phe Thr Leu Gly Val 85 90
95 Ile Lys Ser Asp Pro Gly Gln Thr Ser Glu Leu Val Arg Val Val Ser
100 105 110 Thr Asn Tyr Asn Gln His Ala Met Val Phe Phe Lys Lys Val
Val Gln 115 120 125 Asn Arg Glu Tyr Phe Trp Ile Thr Leu Tyr Gly Arg
Thr Lys Glu Leu 130 135 140 Thr Ser Glu Leu Lys Glu Asn Phe Ile Arg
Phe Ser Lys Ser Leu Gly 145 150 155 160 Leu Pro Glu Asn His Ile Val
Phe Pro Val Pro Ile Asp Gln Cys Ile 165 170 175 Asp Gly
45178PRTArtificial SequenceNGAL mutein Pvd type III binder 8 45Gln
Asp Ser Thr Ser Asp Leu Ile Pro Ala Pro Pro Leu Ser Lys Val 1 5 10
15 Pro Leu Gln Gln Asn Phe Gln Asp Asn Gln Phe His Gly Lys Trp Tyr
20 25 30 Val Val Gly Glu Ala Gly Asn Leu Ala Leu Arg Glu Asp Lys
Asp Pro 35 40 45 Met Lys Met Met Ala Thr Ile Tyr Glu Leu Lys Glu
Asp Lys Ser Tyr 50 55 60 Asn Val Thr Glu Val Arg Phe Arg His Lys
Lys Cys Lys Tyr Asp Ile 65 70 75 80 Val Thr Phe Val Pro Gly Ser Gln
Pro Gly Glu Phe Thr Leu Gly Leu 85 90 95 Ile Lys Ser Asp Pro Gly
Gln Thr Ser Glu Leu Val Arg Val Val Ser 100 105 110 Thr Asn Tyr Asn
Gln His Ala Met Val Phe Phe Lys Lys Val Val Gln 115 120 125 Asn Arg
Glu Tyr Phe Trp Ile Thr Leu Tyr Gly Arg Thr Lys Glu Leu 130 135 140
Thr Ser Glu Leu Lys Glu Asn Phe Ile Arg Phe Ser Lys Ser Leu Gly 145
150 155 160 Leu Pro Glu Asn His Ile Val Phe Pro Val Pro Ile Asp Gln
Cys Ile 165 170 175 Asp Gly 46174PRTArtificial SequenceNGAL mutein
Pvd type III binder 9 46Gln Asp Ser Thr Ser Asp Leu Ile Pro Ala Pro
Pro Leu Ser Lys Val 1 5 10 15 Pro Leu Gln Gln Asn Phe Gln Asp Asn
Gln Phe His Gly Lys Trp Tyr 20 25 30 Val Val Gly Glu Ala Gly Asn
Leu Ala Leu Arg Glu Asp Lys Asp Pro 35 40 45 Lys Lys Met Met Ala
Thr Ile Tyr Glu Leu Lys Glu Asp Lys Ser Tyr 50 55 60 Asn Val Thr
Glu Val Arg Phe Arg Tyr Lys Lys Cys Gln Tyr Asp Ile 65 70 75 80 Val
Thr Phe Val Pro Gly Ser Gln Pro Gly Glu Phe Thr Leu Ser Glu 85 90
95 Pro Gly Gln Thr Ser Glu Leu Val Arg Val Val Ser Thr Asn Tyr Asn
100 105 110 Gln His Ala Met Val Phe Phe Lys Lys Val Val Gln Asn Arg
Glu Phe 115 120 125 Phe Trp Ile Thr Leu Tyr Gly Arg Thr Lys Glu Leu
Thr Ser Glu Leu 130 135 140 Lys Glu Asn Phe Ile Arg Phe Ser Lys Ser
Leu Gly Leu Pro Glu Asn 145 150 155 160 His Ile Val Phe Pro Val Pro
Ile Asp Gln Cys Ile Asp Gly 165 170 47178PRTArtificial SequenceNGAL
mutein Pvd type III binder 10 47Gln Asp Ser Thr Ser Asp Leu Ile Pro
Ala Pro Pro Leu Ser Lys Val 1 5 10 15 Pro Leu Gln Gln Asn Phe Gln
Asp Asn Gln Phe His Gly Lys Trp Tyr 20 25 30 Val Val Gly Glu Ala
Gly Asn Leu Ala Arg Arg Glu Asp Lys Asp Pro 35 40 45 Met Lys Met
Met Ala Thr Ile Tyr Glu Leu Lys Glu Asp Lys Ser Tyr 50 55 60 Asn
Val Thr Glu Val Arg Phe Arg His Lys Lys Cys Lys Tyr Asp Ile 65 70
75 80 Val Thr Phe Val Pro Gly Ser Gln Pro Gly Glu Phe Thr Leu Gly
Leu 85 90 95 Ile Lys Ser Asp Pro Gly Gln Thr Pro Glu Leu Val Arg
Val Val Ser 100 105 110 Thr Asn Tyr Asn Gln His Ala Met Val Phe Phe
Lys Lys Val Val Gln 115 120 125 Asn Arg Glu Tyr Phe Trp Ile Thr Leu
Tyr Gly Arg Thr Lys Glu Leu 130 135 140 Thr Ser Glu Leu Lys Glu Asn
Phe Ile Arg Phe Ser Lys Ser Leu Gly 145 150 155 160 Leu Pro Glu Asn
His Ile Val Phe Pro Val Pro Ile Asp Gln Cys Ile 165 170 175 Asp Gly
48178PRTArtificial SequenceNGAL mutein Pvd type III binder 11 48Gln
Asp Ser Thr Ser Asp Leu Ile Pro Ala Pro Pro Leu Ser Lys Val 1 5 10
15 Pro Leu Gln Gln Asn Phe Gln Asp Asn Gln Phe His Gly Lys Trp Tyr
20 25 30 Val Val Gly Glu Ala Gly Asn Leu Ala Leu Arg Glu Asp Lys
Asn Pro 35 40 45 Met Lys Met Met Ala Thr Ile Tyr Glu Leu Lys Glu
Asp Lys Ser Tyr 50 55 60 Asn Val Thr Glu Val Arg Phe Arg His Lys
Lys Cys Lys Tyr Asp Ile 65 70 75 80 Val Thr Phe Val Pro Gly Ser Gln
Pro Gly Glu Phe Thr Leu Gly Leu 85 90 95 Ile Lys Ser Asp Pro Gly
Gln Thr Pro Glu Leu Val Arg Val Val Ser 100 105 110 Thr Asn Tyr Asn
Gln His Ala Met Val Phe Phe Lys Lys Val Val Gln 115 120 125 Asn Arg
Glu Tyr Phe Trp Ile Thr Leu Tyr Gly Arg Thr Lys Glu Leu 130 135 140
Pro Ser Glu Leu Lys Glu Asn Phe Ile Arg Phe Ser Lys Ser Leu Gly 145
150 155 160 Leu Pro Glu Asn His Ile Val Phe Pro Val Pro Ile Asp Gln
Cys Ile 165 170 175 Asp Gly 49178PRTArtificial SequenceNGAL mutein
Pvd type III binder 12 49Gln Asp Ser Thr Ser Asp Leu Ile Pro Ala
Pro Pro Leu Ser Lys Val 1 5 10 15 Pro Leu Gln Gln Asn Phe Gln Asp
Asn Gln Phe His Gly Lys Trp Tyr 20 25 30 Val Val Gly Glu Ala Gly
Asn Leu Ala Leu Arg Glu Gly Arg Asp Pro 35 40 45 Met Lys Met Met
Ala Thr Ile Tyr Glu Leu Lys Glu Asp Lys Ser Tyr 50 55 60 Asn Val
Thr Glu Val Arg Phe Arg His Lys Lys Cys Lys Tyr Asp Ile 65 70 75 80
Val Thr Phe Val Pro Gly Ser Gln Pro Gly Glu Phe Thr Leu Gly Leu 85
90 95 Ile Lys Ser Asp Pro Gly Gln Thr Pro Glu Leu Val Arg Val Val
Ser 100 105 110 Thr Asn Tyr Asn Gln His Ala Met Val Phe Phe Lys Lys
Val Val Gln 115 120 125 Asn Arg Glu Tyr Phe Trp Ile Thr Leu Tyr Gly
Arg Thr Lys Glu Leu 130 135 140 Thr Ser Glu Leu Lys Glu Asn Phe Ile
Arg Phe Ser Lys Ser Leu Gly 145 150 155 160 Leu Pro Glu Asn His Ile
Val Phe Pro Val Pro Ile Asp Gln Cys Ile 165 170 175 Asp Gly
50178PRTArtificial SequenceNGAL mutein Pvd type III binder 13 50Gln
Asp Ser Thr Ser Asp Leu Ile Pro Ala Pro Pro Leu Ser Lys Val 1 5 10
15 Pro Leu Gln Gln Asn Phe Gln Asp Asn Gln Phe His Gly Lys Trp Tyr
20 25 30 Val Val Gly Glu Ala Gly Asn Leu Ala Arg Arg Glu Asp Lys
Asp Pro 35 40 45 Met Lys Met Met Ala Thr Ile Tyr Glu Leu Lys Glu
Asp Lys Ser Tyr 50 55 60 Asp Val Thr Glu Val Arg Phe Arg His Lys
Lys Cys Lys Tyr Asp Ile 65 70 75 80 Val Thr Phe Val Pro Gly Ser Gln
Pro Gly Glu Phe Thr Leu Gly Leu 85 90 95 Ile Lys Ser Asp Pro Gly
Gln Thr Pro Glu Leu Val Arg Val Val Ser 100 105 110 Thr Asn Tyr Asn
Gln His Ala Met Val Phe Phe Lys Lys Val Val Gln 115 120 125 Asn
Arg Glu Tyr Phe Trp Ile Thr Leu Tyr Gly Arg Thr Lys Glu Leu 130 135
140 Thr Ser Glu Leu Lys Glu Asn Phe Ile Arg Phe Ser Lys Ser Leu Gly
145 150 155 160 Leu Pro Glu Asn His Ile Val Phe Pro Val Pro Ile Asp
Gln Cys Ile 165 170 175 Asp Gly 51178PRTArtificial SequenceNGAL
mutein Pvd type III binder 14 51Gln Asp Ser Thr Ser Asp Leu Ile Pro
Ala Pro Pro Leu Ser Lys Val 1 5 10 15 Pro Leu Gln Gln Asn Phe Gln
Asp Asn Gln Phe His Gly Lys Trp Tyr 20 25 30 Val Val Gly Glu Ala
Gly Asn Leu Ala Leu Arg Glu Asp Lys Asn Pro 35 40 45 Met Lys Met
Met Ala Thr Ile Tyr Glu Leu Lys Glu Asp Lys Ser Tyr 50 55 60 Asp
Val Thr Glu Val Arg Phe Arg His Lys Lys Cys Lys Tyr Asp Ile 65 70
75 80 Val Thr Phe Val Pro Gly Ser Gln Pro Gly Glu Phe Thr Leu Gly
Leu 85 90 95 Ile Lys Ser Asp Pro Gly Gln Thr Pro Glu Leu Val Arg
Val Val Ser 100 105 110 Thr Asn Tyr Asn Gln His Ala Met Val Phe Phe
Lys Lys Val Val Gln 115 120 125 Asn Arg Glu Tyr Phe Trp Ile Thr Leu
Tyr Gly Arg Thr Lys Glu Leu 130 135 140 Pro Ser Glu Leu Lys Glu Asn
Phe Ile Arg Phe Ser Lys Ser Leu Gly 145 150 155 160 Leu Pro Glu Asn
His Ile Val Phe Pro Val Pro Ile Asp Gln Cys Ile 165 170 175 Asp Gly
52178PRTArtificial SequenceNGAL mutein Pvd type III binder 15 52Gln
Asp Ser Thr Ser Asp Leu Ile Pro Ala Pro Pro Leu Ser Lys Val 1 5 10
15 Pro Leu Gln Gln Asn Phe Gln Asp Asn Gln Phe His Gly Lys Trp Tyr
20 25 30 Val Val Gly Glu Ala Gly Asn Leu Ala Leu Arg Glu Gly Arg
Asp Pro 35 40 45 Met Lys Met Met Ala Thr Ile Tyr Glu Leu Lys Glu
Asp Lys Ser Tyr 50 55 60 Asp Val Thr Glu Val Arg Phe Arg His Lys
Lys Cys Lys Tyr Asp Ile 65 70 75 80 Val Thr Phe Val Pro Gly Ser Gln
Pro Gly Glu Phe Thr Leu Gly Leu 85 90 95 Ile Lys Ser Asp Pro Gly
Gln Thr Pro Glu Leu Val Arg Val Val Ser 100 105 110 Thr Asn Tyr Asn
Gln His Ala Met Val Phe Phe Lys Lys Val Val Gln 115 120 125 Asn Arg
Glu Tyr Phe Trp Ile Thr Leu Tyr Gly Arg Thr Lys Glu Leu 130 135 140
Thr Ser Glu Leu Lys Glu Asn Phe Ile Arg Phe Ser Lys Ser Leu Gly 145
150 155 160 Leu Pro Glu Asn His Ile Val Phe Pro Val Pro Ile Asp Gln
Cys Ile 165 170 175 Asp Gly 53178PRTArtificial SequenceNGAL mutein
Pvd type III binder 16 53Gln Asp Ser Thr Ser Asp Leu Ile Pro Ala
Pro Pro Leu Ser Lys Val 1 5 10 15 Pro Leu Gln Gln Asn Phe Gln Asp
Asn Gln Phe Gln Gly Lys Trp Tyr 20 25 30 Val Val Gly Glu Ala Gly
Asn Leu Ala Arg Arg Glu Asp Lys Asp Pro 35 40 45 Met Lys Met Met
Ala Thr Ile Tyr Glu Leu Lys Glu Asp Lys Ser Tyr 50 55 60 Asp Val
Thr Glu Val Arg Phe Arg His Lys Lys Cys Lys Tyr Asp Ile 65 70 75 80
Val Thr Phe Val Pro Gly Ser Gln Pro Gly Glu Phe Thr Leu Gly Leu 85
90 95 Ile Lys Ser Asp Pro Gly Gln Thr Pro Glu Leu Val Arg Val Val
Ser 100 105 110 Thr Asn Tyr Asn Gln His Ala Met Val Phe Phe Lys Lys
Val Val Gln 115 120 125 Asn Arg Glu Tyr Phe Trp Ile Thr Leu Tyr Gly
Arg Thr Lys Glu Leu 130 135 140 Thr Ser Glu Leu Lys Glu Asn Phe Ile
Arg Phe Ser Lys Ser Leu Gly 145 150 155 160 Leu Pro Glu Asn His Ile
Val Phe Pro Val Pro Ile Asp Gln Cys Ile 165 170 175 Asp Gly
54178PRTArtificial SequenceNGAL mutein Pch binder 1 54Gln Asp Ser
Thr Ser Asp Leu Ile Pro Ala Pro Pro Leu Ser Lys Val 1 5 10 15 Pro
Leu Gln Gln Asn Phe Gln Asp Asn Gln Phe His Gly Lys Trp Tyr 20 25
30 Val Val Gly Leu Ala Gly Asn Ile Leu Leu Arg Glu Asp Lys Asp Pro
35 40 45 His Lys Met Leu Ala Thr Ile Tyr Glu Leu Lys Glu Asp Lys
Ser Tyr 50 55 60 Asn Val Thr His Val Thr Phe Lys Trp Lys Lys Cys
Tyr Tyr Ala Ile 65 70 75 80 Arg Thr Phe Val Pro Gly Ser Gln Pro Gly
Glu Phe Thr Leu Gly Met 85 90 95 Ile Lys Ser Glu Pro Gly His Thr
Ser Met Leu Val Arg Val Val Ser 100 105 110 Thr Asn Tyr Asn Gln His
Ala Met Val Phe Phe Lys Trp Val Asp Gln 115 120 125 Asn Arg Glu Glu
Phe Leu Ile Thr Leu Tyr Gly Arg Thr Lys Glu Leu 130 135 140 Thr Ser
Glu Leu Lys Glu Asn Phe Ile Arg Phe Ser Lys Ser Leu Gly 145 150 155
160 Leu Pro Glu Asn His Ile Val Phe Pro Val Pro Ile Asp Gln Cys Ile
165 170 175 Asp Gly 55178PRTArtificial SequenceNGAL mutein Pch
binder 2 55Gln Asp Ser Thr Ser Asp Leu Ile Pro Ala Pro Pro Leu Ser
Lys Val 1 5 10 15 Pro Leu Gln Gln Asn Phe Gln Asp Asn Gln Phe His
Gly Lys Trp Tyr 20 25 30 Val Val Gly His Ala Gly Asn Gln Trp Leu
Arg Glu Asp Lys Asp Pro 35 40 45 Arg Lys Met Trp Ala Thr Ile Tyr
Glu Leu Lys Glu Asp Lys Ser Tyr 50 55 60 Asn Val Thr Asp Val Asp
Phe Ala Ile Lys Lys Cys His Tyr Arg Ile 65 70 75 80 Thr Thr Phe Val
Pro Gly Ser Gln Pro Gly Glu Phe Thr Leu Gly Asn 85 90 95 Ile Lys
Ser His Pro Gly Gly Thr Ser Gly Leu Val Arg Val Val Ser 100 105 110
Thr Asn Tyr Asn Gln His Ala Met Val Phe Phe Lys Phe Val Ile Gln 115
120 125 Asn Arg Glu Ala Phe Phe Ile Thr Leu Tyr Gly Arg Thr Lys Glu
Leu 130 135 140 Thr Ser Glu Leu Lys Glu Asn Phe Ile Arg Phe Ser Lys
Ser Leu Gly 145 150 155 160 Leu Pro Glu Asn His Ile Val Phe Pro Val
Pro Ile Asp Gln Cys Ile 165 170 175 Asp Gly 56178PRTArtificial
SequenceNGAL mutein Pch binder 3 56Gln Asp Ser Thr Ser Asp Leu Ile
Pro Ala Pro Pro Leu Ser Lys Val 1 5 10 15 Pro Leu Gln Gln Asn Phe
Gln Asp Asn Gln Phe His Gly Lys Trp Tyr 20 25 30 Val Val Gly Met
Ala Gly Asn Phe His Leu Arg Glu Asp Lys Asp Pro 35 40 45 Ser Lys
Met Pro Ala Thr Ile Tyr Glu Leu Lys Glu Asp Lys Ser Tyr 50 55 60
Asn Val Thr His Val Pro Phe Trp Ala Lys Lys Cys Ala Tyr Lys Ile 65
70 75 80 Ile Thr Phe Val Pro Gly Ser Gln Pro Gly Glu Phe Thr Leu
Gly Ala 85 90 95 Ile Lys Ser Gly Pro Gly Met Thr Ser Trp Leu Val
Arg Val Val Ser 100 105 110 Thr Asn Tyr Asn Gln His Ala Met Val Phe
Phe Lys Gly Val Trp Gln 115 120 125 Asn Arg Glu Thr Phe Val Ile Thr
Leu Tyr Gly Arg Thr Lys Glu Leu 130 135 140 Thr Ser Glu Leu Lys Glu
Asn Phe Ile Arg Phe Ser Lys Ser Leu Gly 145 150 155 160 Leu Pro Glu
Asn His Ile Val Phe Pro Val Pro Ile Asp Gln Cys Ile 165 170 175 Asp
Gly 57178PRTArtificial SequenceNGAL mutein Pch binder 4 57Gln Asp
Ser Thr Ser Asp Leu Ile Pro Ala Pro Pro Leu Ser Lys Val 1 5 10 15
Pro Leu Gln Gln Asn Phe Gln Asp Asn Gln Phe His Gly Lys Trp Tyr 20
25 30 Val Val Gly Val Ala Gly Asn Tyr Trp Leu Arg Glu Asp Lys Asp
Pro 35 40 45 Ala Lys Met Tyr Ala Thr Ile Tyr Glu Leu Lys Glu Asp
Lys Ser Tyr 50 55 60 Asn Val Thr Asp Val Arg Phe Trp Arg Lys Lys
Cys Arg Tyr Asp Ile 65 70 75 80 Trp Thr Phe Val Pro Gly Ser Gln Pro
Gly Glu Phe Thr Leu Gly Pro 85 90 95 Ile Lys Ser Glu Pro Gly Gln
Thr Ser Arg Leu Val Arg Val Val Ser 100 105 110 Thr Asn Tyr Asn Gln
His Ala Met Val Phe Phe Lys Leu Val Arg Gln 115 120 125 Asn Arg Glu
Ala Phe Asn Ile Thr Leu Tyr Gly Arg Thr Lys Glu Leu 130 135 140 Thr
Ser Glu Leu Lys Glu Asn Phe Ile Arg Phe Ser Lys Ser Leu Gly 145 150
155 160 Leu Pro Glu Asn His Ile Val Phe Pro Val Pro Ile Asp Gln Cys
Ile 165 170 175 Asp Gly 58178PRTArtificial SequenceNGAL mutein Pch
binder 5 58Gln Asp Ser Thr Ser Asp Leu Ile Pro Ala Pro Pro Leu Ser
Lys Val 1 5 10 15 Pro Leu Gln Gln Asn Phe Gln Asp Asn Gln Phe His
Gly Lys Trp Tyr 20 25 30 Val Leu Gly Met Ala Gly Asn Phe His Leu
Arg Glu Asp Lys Asp Pro 35 40 45 Ser Lys Met Pro Ala Thr Ile Tyr
Glu Leu Lys Glu Asp Lys Ser Tyr 50 55 60 Asn Val Thr His Val Pro
Phe Trp Ala Lys Lys Cys Ala Tyr Lys Thr 65 70 75 80 Ile Thr Phe Val
Pro Gly Ser Gln Pro Gly Glu Phe Thr Leu Gly Ala 85 90 95 Ile Lys
Ser Gly Pro Gly Met Thr Ser Trp Leu Val Arg Val Val Ser 100 105 110
Thr Asn Tyr Asn Gln His Ala Met Val Phe Ser Lys Gly Val Trp Gln 115
120 125 Asn Arg Glu Thr Phe Val Ile Thr Leu Tyr Gly Arg Ala Lys Glu
Leu 130 135 140 Thr Ser Glu Leu Lys Glu Asn Phe Ile Arg Phe Ser Lys
Ser Leu Gly 145 150 155 160 Leu Pro Glu Asn His Ile Val Phe Pro Val
Pro Ile Asp Gln Cys Ile 165 170 175 Asp Gly 59178PRTArtificial
SequenceNGAL mutein Pch binder 6 59Gln Asp Ser Thr Ser Asp Leu Ile
Pro Ala Pro Pro Leu Ser Lys Val 1 5 10 15 Pro Leu Gln Gln Asn Phe
Gln Asp Asn Gln Phe His Gly Lys Trp Tyr 20 25 30 Val Val Gly Met
Ala Gly Asn Phe His Leu Arg Glu Asp Lys Asp Pro 35 40 45 Ser Lys
Met Pro Ala Thr Ile Tyr Glu Leu Lys Glu Asp Lys Ser Tyr 50 55 60
Asn Val Thr His Val Pro Phe Trp Ala Lys Lys Cys Ala Tyr Lys Thr 65
70 75 80 Ile Thr Phe Val Pro Gly Ser Gln Pro Gly Glu Phe Thr Leu
Gly Ala 85 90 95 Ile Lys Ser Gly Pro Gly Met Thr Ser Trp Leu Val
Arg Val Val Ser 100 105 110 Thr Asn Tyr Asn Gln His Ala Met Val Phe
Ser Lys Gly Val Trp Gln 115 120 125 Asn Arg Glu Thr Phe Val Ile Thr
Leu Tyr Gly Arg Thr Lys Glu Leu 130 135 140 Thr Ser Glu Leu Lys Glu
Asn Phe Ile Arg Phe Ser Lys Ser Leu Gly 145 150 155 160 Leu Pro Glu
Asn His Ile Val Phe Pro Val Pro Ile Asp Gln Cys Ile 165 170 175 Asp
Gly 60178PRTArtificial SequenceNGAL mutein Pch binder 7 60Gln Asp
Ser Thr Ser Asp Leu Ile Pro Ala Pro Pro Leu Ser Lys Val 1 5 10 15
Pro Leu Gln Gln Asn Phe Gln Asp Asn Gln Phe His Gly Lys Trp Tyr 20
25 30 Val Val Gly His Ala Gly Asn Gln Trp Leu Arg Glu Gly Arg Asp
Pro 35 40 45 Arg Lys Met Trp Ala Thr Ile Tyr Glu Leu Lys Glu Asp
Lys Ser Tyr 50 55 60 Asn Val Thr Asp Val Asp Phe Ala Ile Lys Lys
Cys Leu Tyr Arg Ile 65 70 75 80 Thr Thr Phe Val Pro Gly Ser Gln Pro
Gly Glu Phe Thr Leu Gly Asn 85 90 95 Ile Lys Ser His Pro Gly Gly
Thr Ser Gly Leu Val Arg Val Val Ser 100 105 110 Thr Asn Tyr Asn Gln
His Ala Met Val Phe Phe Lys Phe Val Ile Gln 115 120 125 Asn Arg Glu
Ala Phe Phe Ile Thr Leu Tyr Gly Arg Thr Lys Glu Leu 130 135 140 Thr
Ser Glu Leu Lys Glu Asn Phe Ile Arg Phe Ser Lys Ser Leu Gly 145 150
155 160 Leu Pro Glu Asn His Ile Val Phe Pro Val Pro Ile Asp Gln Cys
Ile 165 170 175 Asp Gly 61178PRTArtificial SequenceNGAL mutein Pch
binder 8 61Gln Asp Ser Thr Ser Asp Leu Ile Pro Ala Pro Pro Leu Ser
Lys Val 1 5 10 15 Pro Leu Gln Gln Asn Phe Gln Asp Asn Gln Phe His
Gly Lys Trp Tyr 20 25 30 Val Val Gly His Ala Gly Asn Gln Trp Leu
Arg Gly Asp Tyr Asp Pro 35 40 45 Arg Lys Met Trp Ala Thr Ile Tyr
Glu Leu Lys Glu Asp Lys Ser Tyr 50 55 60 Asn Val Thr Asp Val Asp
Phe Ala Ile Glu Lys Cys His Tyr Arg Ile 65 70 75 80 Thr Thr Phe Val
Pro Gly Ser Gln Pro Gly Glu Phe Thr Phe Gly Asn 85 90 95 Ile Lys
Ser His Pro Gly Gly Thr Ser Gly Leu Ala Arg Val Val Ser 100 105 110
Thr Asn Tyr Asn Gln His Ala Met Val Phe Phe Lys Phe Val Ile Gln 115
120 125 Asn Arg Glu Ala Phe Phe Ile Thr Leu Tyr Gly Arg Thr Lys Glu
Leu 130 135 140 Thr Ser Glu Leu Lys Glu Asn Phe Ile Arg Phe Ser Lys
Ser Leu Gly 145 150 155 160 Leu Pro Glu Asn His Ile Val Phe Pro Val
Pro Ile Asp Gln Cys Ile 165 170 175 Asp Gly 62178PRTArtificial
SequenceNGAL mutein Pch binder 9 62Gln Asp Ser Thr Ser Asp Leu Ile
Pro Ala Pro Pro Leu Ser Lys Val 1 5 10 15 Pro Leu Gln Gln Asn Phe
Gln Asp Asn Gln Phe Gln Gly Lys Trp Tyr 20 25 30 Val Val Gly His
Ala Gly Asn Gln Trp Leu Arg Glu Gly Arg Asp Pro 35 40 45 Arg Lys
Met Trp Ala Thr Ile Tyr Glu Leu Lys Glu Asp Lys Ser Tyr 50 55 60
Asp Val Thr Asp Val Asp Phe Ala Ile Lys Lys Cys Leu Tyr Arg Ile 65
70 75 80 Thr Thr Phe Val Pro Gly Ser Gln Pro Gly Glu Phe Thr Leu
Gly Asn 85 90 95 Ile Lys Ser His Pro Gly Gly Thr Ser Gly Leu Val
Arg Val Val Ser 100 105 110 Thr Asn Tyr Asn Gln His Ala Met Val Phe
Phe Lys Phe Val Ile Gln 115 120 125 Asn Arg Glu Ala Phe Phe Ile Thr
Leu Tyr Gly Arg Thr Lys Glu Leu 130 135 140 Thr Ser Glu Leu Lys Glu
Asn Phe Ile Arg Phe Ser Lys Ser Leu Gly 145 150 155 160 Leu Pro Glu
Asn His Ile Val Phe Pro Val Pro Ile Asp Gln Cys Ile 165 170 175 Asp
Gly 63178PRTArtificial SequenceNGAL mutein Pch binder 10 63Gln Asp
Ser Thr Ser Asp Leu Ile Pro Ala Pro Pro Leu Ser Lys Val 1 5 10 15
Pro Leu Gln Gln Asn Phe Gln Asp Asn Gln Phe His Gly Lys Trp Tyr 20
25 30 Val Val Gly His Ala Gly Asn Gln Trp Leu Arg Gly Asp Tyr
Asp Pro 35 40 45 Arg Lys Met Trp Ala Thr Ile Tyr Glu Leu Lys Glu
Asp Lys Ser Tyr 50 55 60 Asp Val Thr Asp Val Asp Phe Ala Ile Glu
Lys Cys His Tyr Arg Ile 65 70 75 80 Thr Thr Phe Val Pro Gly Ser Gln
Pro Gly Glu Phe Thr Phe Gly Asn 85 90 95 Ile Lys Ser His Pro Gly
Gly Thr Ser Gly Leu Ala Arg Val Val Ser 100 105 110 Thr Asn Tyr Asn
Gln His Ala Met Val Phe Phe Lys Phe Val Ile Gln 115 120 125 Asn Arg
Glu Ala Phe Phe Ile Thr Leu Tyr Gly Arg Thr Lys Glu Leu 130 135 140
Thr Ser Glu Leu Lys Glu Asn Phe Ile Arg Phe Ser Lys Ser Leu Gly 145
150 155 160 Leu Pro Glu Asn His Ile Val Phe Pro Val Pro Ile Asp Gln
Cys Ile 165 170 175 Asp Gly 64178PRTArtificial SequenceExpressed
protein amino acid sequence 64Gln Asp Ser Thr Ser Asp Leu Ile Pro
Ala Pro Pro Leu Ser Lys Val 1 5 10 15 Pro Leu Gln Gln Asn Phe Gln
Asp Asn Gln Phe His Gly Lys Trp Tyr 20 25 30 Val Val Gly Leu Ala
Gly Asn Ala Ile Leu Arg Glu Asp Lys Asp Pro 35 40 45 Gln Lys Met
Tyr Ala Thr Ile Tyr Glu Leu Lys Glu Asp Lys Ser Tyr 50 55 60 Asn
Val Thr Ser Val Leu Phe Arg Lys Lys Lys Cys Asp Tyr Trp Ile 65 70
75 80 Arg Thr Phe Val Pro Gly Ser Gln Pro Gly Glu Phe Thr Leu Gly
Asn 85 90 95 Ile Lys Ser Tyr Pro Gly Leu Thr Ser Tyr Leu Val Arg
Val Val Ser 100 105 110 Thr Asn Tyr Asn Gln His Ala Met Val Phe Phe
Lys Lys Val Ser Gln 115 120 125 Asn Arg Glu Tyr Phe Lys Ile Thr Leu
Tyr Gly Arg Thr Lys Glu Leu 130 135 140 Thr Ser Glu Leu Lys Glu Asn
Phe Ile Arg Phe Ser Lys Ser Leu Gly 145 150 155 160 Leu Pro Glu Asn
His Ile Val Phe Pro Val Pro Ile Asp Gln Cys Ile 165 170 175 Asp Gly
65534DNAArtificial SequenceS0466.12C05 65caggactcca cctcagacct
gatcccagcc ccacctctga gcaaggtccc tctgcagcag 60aacttccagg acaaccaatt
ccatgggaaa tggtatgtcg tgggcaatgc cggaaatgga 120tggctgcgtg
aggataagga tccgatcaaa atgatggcga ccatttacga gttgaaagaa
180gataaatcat ataacgtcac cgttgtgcaa ttttgggaca agaaatgcct
gtaccaaatt 240caaacctttg tgccggggag ccagccgggc gagtttactt
taggccacat taaaagtaaa 300ccgggccaca catcacactt ggtccgcgtc
gtgagcacca actacaacca gcatgccatg 360gtgttcttca agcgtgtgtg
gcagaaccgc gagtggtttg acatcacact gtacgggcgc 420acgaaagaac
tgacaagcga gctgaaggaa aattttatcc gcttttccaa atctctgggc
480ctccctgaaa accacatcgt cttccctgtc ccaatcgacc agtgtatcga cggc
53466534DNAArtificial SequenceDNA encoding an expressed protein
amino acid sequence 66caggactcca cctcagacct gatcccagcc ccacctctga
gcaaggtccc tctgcagcag 60aacttccagg acaaccaatt ccatgggaaa tggtatgtcg
tgggcaccgc cggaaatgga 120ttcctgcgtg aggataagga tccgctgaaa
atgtgggcga ccatttacga gttgaaagaa 180gataaatcat ataacgtcac
cagcgtgtgg tttgcactga agaaatgcta ctacgacatt 240ggaacctttg
tgccggggag ccagccgggc gagtttactt taggcatcat taaaagtgag
300ccgggccaca catcacaatt ggtccgcgtc gtgagcacca actacaacca
gcatgccatg 360gtgttcttca agtgggtgaa tcagaaccgc gagaattttc
aaatcacact gtacgggcgc 420acgaaagaac tgacaagcga gctgaaggaa
aattttatcc gcttttccaa atctctgggc 480ctccctgaaa accacatcgt
cttccctgtc ccaatcgacc agtgtatcga cggc 53467534DNAArtificial
SequenceDNA encoding an expressed protein amino acid sequence
67caggactcca cctcagacct gatcccagcc ccacctctga gcaaggtccc tctgcagcag
60aacttccagg acaaccaatt ccatgggaaa tggtatgtcg tgggctgggc cggaaatacc
120accctgcgtg aggataagga tccgcctaaa atgcctgcga ccatttacga
gttgaaagaa 180gataaatcat ataacgtcac cgacgtgcaa tttagcgaga
agaaatgcag ctacagcatt 240atcacctttg tgccggggag ccagccgggc
gagtttactt taggcggaat taaaagtaat 300ccgggcaaaa catcacactt
ggtccgcgtc gtgagcacca actacaacca gcatgccatg 360gtgttcttca
agtacgtggc acagaaccgc gagggattta atatcacact gtacgggcgc
420acgaaagaac tgacaagcga gctgaaggaa aattttatcc gcttttccaa
atctctgggc 480ctccctgaaa accacatcgt cttccctgtc ccaatcgacc
agtgtatcga cggc 53468534DNAArtificial SequenceDNA encoding an
expressed protein amino acid sequence 68caggactcca cctcagacct
gatcccagcc ccacctctga gcaaggtccc tctgcagcag 60aacttccagg acaaccaatt
ccatgggaaa tggtatgtcg tgggcttcgc cggaaataat 120cgtctgcgtg
aggataagga tccgcctaaa atgatggcga ccatttacga gttgaaagaa
180gataaatcat ataacgtcac cgacgtgacc tttgaggcaa agaaatgccg
ttaccgtatt 240atcacctttg tgccggggag ccagccgggc gagtttactt
taggctacat taaaagtaaa 300ccgggcccta catcattctt ggtccgcgtc
gtgagcacca actacaacca gcatgccatg 360gtgttcttca agagcgtgac
ccagaaccgc gagtggtttg gaatcacact gtacgggcgc 420acgaaagaac
tgacaagcga gctgaaggaa aattttatcc gcttttccaa atctctgggc
480ctccctgaaa accacatcgt cttccctgtc ccaatcgacc agtgtatcga cggc
53469534DNAArtificial SequenceDNA encoding an expressed protein
amino acid sequence 69caggactcca cctcagacct gatcccagcc ccacctctga
gcaaggtccc tctgcagcag 60aacttccagg acaaccaatt ccatgggaaa tggtatgtcg
tgggcctggc cggaaatgga 120tggctgcgtg aggataagga tccggttaaa
atgatggcga ccatttacga gttgaaagaa 180gataaatcat ataacgtcac
cgttgtggac tttgagctga agaaatgccg ttacatgatt 240gagacctttg
tgccggggag ccagccgggc gagtttactt taggcgacat taaaagtttc
300ccgggctgga catcacaatt ggtccgcgtc gtgagcacca actacaacca
gcatgccatg 360gtgttcttca agggagtgta ccagaaccgc gagtggtttc
acatcacact gtacgggcgc 420acgaaagaac tgacaagcga gctgaaggaa
aattttatcc gcttttccaa atctctgggc 480ctccctgaaa accacatcgt
cttccctgtc ccaatcgacc agtgtatcga cggc 53470534DNAArtificial
SequenceDNA encoding an expressed protein amino acid sequence
70caggactcca cctcagacct gatcccagcc ccacctctga gcaaggtccc tctgcagcag
60aacttccagg acaaccaatt ccatgggaaa tggtatgtcg tgggcgttgc cggaaatttc
120ttcctgcgtg aggataagga tccggcaaaa atgcctgcga ccatttacga
gttgaaagaa 180gataaatcat ataacgtcac cgaggtgtgg tttctgaata
agaaatgcca atacgagatt 240cacacctttg tgccggggag ccagccgggc
gagtttactt taggctacat taaaagttac 300ccgggctaca catcacactt
ggtccgcgtc gtgagcacca actacaacca gcatgccatg 360gtgttcttca
aggttgtgca ccagaaccgc gataaatttt ggatcacact gtacgggcgc
420acgaaagaac tgacaagcga gctgaaggaa aattttatcc gcttttccaa
atctctgggc 480ctccctgaaa accacatcgt cttccctgtc ccaatcgacc
agtgtatcga cggc 53471534DNAArtificial SequenceDNA encoding an
expressed protein amino acid sequence 71caggactcca cctcagacct
gatcccagcc ccacctctga gcaaggtccc tctgcagcag 60aacttccagg acaaccaatt
ccatgggaaa tggtatgtcg tgggctgggc cggaaatacg 120acgctgcgtg
aggataagga tccgcctaaa atgcctgcga ccatttacga gttgaaagaa
180gataaatcat ataacgtcac cgatgtgcag tttcctgaga agaaatgcat
ttactctact 240attacctttg tgccggggag ccagccgggc gagtttactt
taggcggtat taaaagtagt 300ccgggccaga catcacattt ggtccgcgtc
gtgagcacca actacaacca gcatgccatg 360gtgttcttca agtatgtgat
tcagaaccgc gaggggttta atatcacact gtacgggcgc 420acgaaagaac
tgacaagcga gctgaaggaa aattttatcc gcttttccaa atctctgggc
480ctccctgaaa accacatcgt cttccctgtc ccaatcgacc agtgtatcga cggc
53472534DNAArtificial SequenceDNA encoding an expressed protein
amino acid sequence 72caggactcca cctcagacct gatcccagcc ccacctctga
gcaaggtccc tctgcagcag 60aacttccagg acaaccaatt ccatgggaaa tggtatgtcg
tgggctgggc cggaaatacg 120acgctgcgtg aggataagga tccgcctaaa
atgcctgcga ccatttacga gttgaaagaa 180gataaatcat ataacgtcac
cgatgtgcag tttccggata agaaatgcat ttactcgatt 240attacctttg
tgccggggag ccagccgggc gagtttactt taggcgggat taaaagtaat
300ccgggcgata catcacattt ggtccgcgtc gtgagcacca actacaacca
gcatgccatg 360gtgttcttca agtatgtggt gcagaaccgc gagggtttta
atatcacact gtacgggcgc 420acgaaagaac tgacaagcga gctgaaggaa
aattttatcc gcttttccaa atctctgggc 480ctccctgaaa accacatcgt
cttccctgtc ccaatcgacc agtgtatcga cggc 53473534DNAArtificial
SequenceDNA encoding an expressed protein amino acid sequence
73caggactcca cctcagacct gatcccagcc ccacctctga gcaaggtccc tctgcagcag
60aacttccagg acaaccaatt ccatgggaaa tggtatgtcg tgggctgggc cggaaatacg
120acgctgcgtg aggataagga tccgcctaaa atgcctgcga ccatttacga
gttgaaagaa 180gataaatcat ataacgtcac cgatgtgcag tttcctgaga
agaaatgcac gtactcgatt 240attacctttg tgccggggag ccagccgggc
gagtttactt taggcgatat taaaagtaat 300ccgggcgaga catcacattt
ggtccgcgtc atgagcacca actacaacca gcatgccatg 360gtgttcttca
agtatgtgga tcagaaccgc gaggggttta atatcacact gtacgggcgc
420acgaaagaac tgacaagcga gctgaaggaa aattttatcc gcttttccaa
atctctgggc 480ctccctgaaa accacatcgt cttccctgtc ccaatcgacc
agtgtatcga cggc 53474534DNAArtificial SequenceDNA encoding an
expressed protein amino acid sequence 74caggactcca cctcagacct
gatcccagcc ccacctctga gcaaggtccc tctgcagcag 60aacttccagg acaaccaatt
ccatgggaaa tggtatgtcg tgggctgggc cggaaatact 120acgctgcgtg
aggataagga tccgcctaaa atgcctgcga ccatttacga gttgaaagaa
180gataaatcat ataacgtcac cgatgtgcag tttccggata agaaatgcgt
gtactcgatt 240attacctttg tgccggggag ccagccgggc gagtttactt
taggcgggat taaaagtaat 300ccgggcaata catcacattt ggtccgcgtc
gtgagcacca actacaacca gcatgccatg 360gtgttcttca agtatgtggt
gcagaaccgc gaggggttta atatcacact gtacgggcgc 420acgaaagaac
tgacaagcga gctgaaggaa aattttatcc gcttttccaa atctctgggc
480ctccctgaaa accacatcgt cttccctgtc ccaatcgacc agtgtatcga cggc
53475534DNAArtificial SequenceDNA encoding an expressed protein
amino acid sequence 75caggactcca cctcagacct gatcccagcc ccacctctga
gcaaggtccc tctgcagcag 60aacttccagg acaaccaatt ccatgggaaa tggtatgtcg
tgggccttgc cggaaatggt 120tggctgcgtg aggataagga tccgcttaaa
atgatggcga ccatttacga gttgaaagaa 180gataaatcat ataacgtcac
cgtggtggat tttgagctta agaaatgcag gtacatgatt 240gagacctttg
tgccggggag ccagccgggc gagtttactt taggcgatat taaaagttct
300ccgggctgga catcacagtt ggtccgcgtc gtgagcacca actacaacca
gcatgccatg 360gtgttcttca agggggtgta tcagaaccgc gagtggtttc
atatcacact gtacgggcgc 420acgaaagaac tgacaagcga gctgaaggaa
aattttatcc gcttttccaa atctctgggc 480ctccctgaaa accacatcgt
cttccctgtc ccaatcgacc agtgtatcga cggc 53476534DNAArtificial
SequenceDNA encoding an expressed protein amino acid sequence
76caggactcca cctcagacct gatcccagcc ccacctctga gcaaggtccc tctgcagcag
60aacttccagg acaaccaatt ccatgggaaa tggtatgtcg tgggctgggc cggaaatacg
120acgctgcgtg aggataagga tccgcctaaa atgcctgcgg tcatttacga
gttgaaagaa 180gataaatcat ataacgtcac cgatgtgcag tttcccgaga
aggaatgcat ttactctact 240attacctttg tgccggggag ccagccgggc
gagtttactt taggcggtat taaaagtagt 300ccgggccaga catcacattt
ggtccgcgtc gtgagcacca actacaacca gcatgccatg 360gtgttcttca
agtatgtgac tcagaaccgc gaggggttta atatcacgct gtacgggcgc
420acgaaagaac tgacaagcga gctgaaggaa aattttatcc gcttttccaa
atctctgggc 480ctccctgaaa accacatcgt cttccctgtc ccaatcgacc
agtgtatcga cggc 53477534DNAArtificial SequenceDNA encoding an
expressed protein amino acid sequence 77caggactcca cctcagacct
gatcccagcc ccacctctga gcaaggtccc tctgcagcag 60aacttccagg acaaccaatt
ccatgggaaa tggtatgtcg tgggccttgc cggaaatggt 120tggctgcgtg
aggatgagga tccgcttaaa atgatggcgg ccgtttacga gttgagagaa
180gataaatcat ataacgtcac cgtggtggat tttgagcttg aggaatgcag
gtacatgact 240gagacctttg tgccggggaa ccagccgggc gagtttactt
taggcgatat taaaagttct 300ccgggctgga catcacagct ggtccgcgtc
gtgagcacca actacaacca gcatgccatg 360gtgttcttca agggggtgta
tcagaaccgc gagtggtttc atatcacact gtacgggcgc 420acgaaagaac
tgacaagcga gctgaaggaa aattttatcc gcttttccaa atctctgggc
480ctccctgaaa accacatcgt cttccctgtc ccaatcgacc agtgtatcga cggc
53478534DNAArtificial SequenceDNA encoding an expressed protein
amino acid sequence 78caggactcca cctcagacct gatcccagcc ccacctctga
gcaaggtccc tctgcagcag 60aacttccagg acaaccaatt ccaagggaaa tggtatgtcg
tgggctgggc cggagatacg 120acgctgcgtg aggataagga tccgcctaaa
atgcctgcgg tcatttacga gttgaaagaa 180gataaatcat atgatgtcac
cgatgtgcag tttcccgaga aggaatgcat ttactctact 240attacctttg
tgccggggag ccagccgggc gagtttactt taggcggtat taaaagtagt
300ccgggccaga catcacattt ggtccgcgtc gtgagcacca actacaacca
gcatgccatg 360gtgttcttca agtatgtgac tcagaaccgc gaggggttta
atatcgcgct gtacgggcgc 420acgaaagaac tgacaagcga gctgaaggaa
aattttatcc gcttttccaa atctctgggc 480ctccctgaaa accacatcgt
cttccctgtc ccaatcgacc agtgtatcga cggc 53479534DNAArtificial
SequenceDNA encoding an expressed protein amino acid sequence
79caggactcca cctcagacct gatcccagcc ccacctctga gcaaggtccc tctgcagcag
60aacttccagg acaaccaatt ccaagggaaa tggtatgtcg tgggctgggc cggaaatacg
120gctctgcgtg aggataagga tccgcctaaa atgcctgcgg tcatttacga
gttgaaagaa 180gataaatcat atgatgtcac cgatgtgcag tttcccgaga
aggaatgcat ttactctact 240attacctttg tgccggggag ccagccgggc
gagtttactt taggcggtat taaaagtagt 300ccgggccaga catcacattt
ggtccgcgtc gtgagcacca actacaacca gcatgccatg 360gtgttcttca
agtatgtgac tcagaaccgc gaggggttta atatcgctct gtacgggcgc
420acgaaagaac tgacaagcga gctgaaggaa aattttatcc gcttttccaa
atctctgggc 480ctccctgaaa accacatcgt cttccctgtc ccaatcgacc
agtgtatcga cggc 53480534DNAArtificial SequenceDNA encoding an
expressed protein amino acid sequence 80caggactcca cctcagacct
gatcccagcc ccacctctga gcaaggtccc tctgcagcag 60aacttccagg acaaccaatt
ccatgggaaa tggtatgtcg tgggccttgc cggaaatggt 120tggctgcgtg
aggatgagga tccgcttaaa atgatggcgg ccgtttacga gttgagagaa
180gataaatcat atgacgtcac cgtggtggat tttgagcttg aggaatgcag
gtacatgact 240gagacctttg tgccggggaa ccagccgggc gagtttactt
taggcgatat taaaagttct 300ccgggctgga catcacagct ggtccgcgtc
gtgagcacca actacaacca gcatgccatg 360gtgttcttca agggggtgta
tcagaaccgc gagtggtttc atatcacact gtacgggcgc 420acgaaagaac
tgacaagcga gctgaaggaa aattttatcc gcttttccaa atctctgggc
480ctccctgaaa accacatcgt cttccctgtc ccaatcgacc agtgtatcga cggc
53481534DNAArtificial SequenceDNA encoding an expressed protein
amino acid sequence 81caggactcca cctcagacct gatcccagcc ccacctctga
gcaaggtccc tctgcagcag 60aacttccagg acaaccaatt ccatgggaaa tggtatgtcg
tgggccttgc cggaaatggt 120tggctgcgtg aggatgagga tccgcttaaa
atgatggcgg ccgtttacga gttgagagaa 180gataaatcat atcaggtcac
cgtggtggat tttgagcttg aggaatgcag gtacatgact 240gagacctttg
tgccggggaa ccagccgggc gagtttactt taggcgatat taaaagttct
300ccgggctgga catcacagct ggtccgcgtc gtgagcacca actacaacca
gcatgccatg 360gtgttcttca agggggtgta tcagaaccgc gagtggtttc
atatcacact gtacgggcgc 420acgaaagaac tgacaagcga gctgaaggaa
aattttatcc gcttttccaa atctctgggc 480ctccctgaaa accacatcgt
cttccctgtc ccaatcgacc agtgtatcga cggc 53482534DNAArtificial
SequenceDNA encoding an expressed protein amino acid sequence
82caggactcca cctcagacct gatcccagcc ccacctctga gcaaggtccc tctgcagcag
60aacttccagg acaaccaatt ccatgggaaa tggtatgtcg tgggcgttgc cggaaatgag
120gttctgcgtg aggataagga tccgggaaaa atgcctgcga ccatttacga
gttgaaagaa 180gataaatcat ataacgtcac cgaggtgcgt tttcacaata
agaaatgcaa ttacagcatt 240gagacctttg tgccggggag ccagccgggc
gagtttactt taggcaatat taaaagtaat 300ccgggccaaa catcaatgtt
ggtccgcgtc gtgagcacca actacaacca gcatgccatg 360gtgttcttca
agaaagtgaa acagaaccgc gagggatttt ggatcacact gtacgggcgc
420acgaaagaac tgacaagcga gctgaaggaa aattttatcc gcttttccaa
atctctgggc 480ctccctgaaa accacatcgt cttccctgtc ccaatcgacc
agtgtatcga cggc 53483534DNAArtificial SequenceDNA encoding an
expressed protein amino acid sequence 83caggactcca cctcagacct
gatcccagcc ccacctctga gcaaggtccc tctgcagcag 60aacttccagg acaaccaatt
ccatgggaaa tggtatgtcg tgggcctggc cggaaatacc 120atcctgcgtg
aggataagga tccgggaaaa atgaatgcga ccatttacga gttgaaagaa
180gataaatcat ataacgtcac cgacgtgcgt tttatcatga agaaatgcca
ctactacatt 240gagacctttg tgccggggag ccagccgggc gagtttactt
taggcatcat taaaagtaat 300ccgggcacca catcacaatt ggtccgcgtc
gtgagcacca actacaacca gcatgccatg 360gtgttcttca agatcgtgcg
tcagaaccgc gagatgtttt ggatcacact gtacgggcgc 420acgaaagaac
tgacaagcga gctgaaggaa aattttatcc gcttttccaa atctctgggc
480ctccctgaaa accacatcgt cttccctgtc ccaatcgacc agtgtatcga cggc
53484534DNAArtificial SequenceDNA encoding an expressed protein
amino acid sequence 84caggactcca cctcagacct gatcccagcc ccacctctga
gcaaggtccc tctgcagcag 60aacttccagg acaaccaatt ccatgggaaa tggtatgtcg
tgggcatcgc cggaaatacc 120gttctgcgtg aggataagga tccgggaaaa
atgcctgcga ccatttacga gttgaaagaa 180gataaatcat ataacgtcac
cgaggtgcgt tttgcaccta agaaatgcat ctacagcatt 240agcacctttg
tgccggggag ccagccgggc gagtttactt taggcatgat taaaagtagc
300ccgggcggaa catcagcatt ggtccgcgtc gtgagcacca actacaacca
gcatgccatg 360gtgttcttca agaaagtgag ccagaaccgc gaggtttttt
ggatcacact gtacgggcgc 420acgaaagaac tgacaagcga gctgaaggaa
aattttatcc gcttttccaa atctctgggc 480ctccctgaaa accacatcgt
cttccctgtc ccaatcgacc agtgtatcga cggc 53485534DNAArtificial
SequenceDNA encoding an expressed protein amino acid sequence
85caggactcca cctcagacct gatcccagcc ccacctctga gcaaggtccc tctgcagcag
60aacttccagg acaaccaatt ccatgggaaa tggtatgtcg tgggcctggc cggaaataat
120atcctgcgtg aggataagga tccggcaaaa atgcctgcga ccatttacga
gttgaaagaa 180gataaatcat ataacgtcac cgaggtgcgt tttagccaaa
agaaatgcat gtacgcaatt 240tacacctttg tgccggggag ccagccgggc
gagtttactt taggccgtat taaaagtcct 300ccgggcacca catcaatctt
ggtccgcgtc gtgagcacca actacaacca gcatgccatg 360gtgttcttca
agaaagtgat gcagaaccgc gagttctttt ggatcacact gtacgggcgc
420acgaaagaac tgacaagcga gctgaaggaa aattttatcc gcttttccaa
atctctgggc 480ctccctgaaa accacatcgt
cttccctgtc ccaatcgacc agtgtatcga cggc 53486534DNAArtificial
SequenceDNA encoding an expressed protein amino acid sequence
86caggactcca cctcagacct gatcccagcc ccacctctga gcaaggtccc tctgcagcag
60aacttccagg acaaccaatt ccatgggaaa tggtatgtcg tgggcctggc cggaaatcac
120atcctgcgtg aggataagga tccggcaaaa atgcctgcga ccatttacga
gttgaaagaa 180gataaatcat ataacgtcac cgaggtgcgt tttggacgta
agaaatgcca ctactggatt 240gagacctttg tgccggggag ccagccgggc
gagtttactt taggccgtat taaaagtgac 300ccgggcatga catcattctt
ggtccgcgtc gtgagcacca actacaacca gcatgccatg 360gtgttcttca
aggcagtgga ccagaaccgc gagaattttt ggatcacact gtacgggcgc
420acgaaagaac tgacaagcga gctgaaggaa aattttatcc gcttttccaa
atctctgggc 480ctccctgaaa accacatcgt cttccctgtc ccaatcgacc
agtgtatcga cggc 53487534DNAArtificial SequenceDNA encoding an
expressed protein amino acid sequence 87caggactcca cctcagacct
gatcccagcc ccacctctga gcaaggtccc tctgcagcag 60aacttccagg acaaccaatt
ccatgggaaa tggtatgtcg tgggcaatgc cggaaatgga 120cgtctgcgtg
aggataagga tccgcctaaa atgtgggcga ccatttacga gttgaaagaa
180gataaatcat ataacgtcac ccgtgtgtgg tttaatcaaa agaaatgcaa
atacgacatt 240gagacctttg tgccggggag ccagccgggc gagtttactt
taggcgacat taaaagtacc 300ccgggctgga catcaaattt ggtccgcgtc
gtgagcacca actacaacca gcatgccatg 360gtgttcttca agaatgtgat
gcagaaccgc gagatctttt acatcacact gtacgggcgc 420acgaaagaac
tgacaagcga gctgaaggaa aattttatcc gcttttccaa atctctgggc
480ctccctgaaa accacatcgt cttccctgtc ccaatcgacc agtgtatcga cggc
53488534DNAArtificial SequenceDNA encoding an expressed protein
amino acid sequence 88caggactcca cctcagacct gatcccagcc ccacctctga
gcaaggtccc tctgcagcag 60aacttccagg acaaccaatt ccatgggaaa tggtatgtcg
tgggcgttgc cggaaatacc 120accctgcgtg aggataagga tccgggaaaa
atgggagcga ccatttacga gttgaaagaa 180gataaatcat ataacgtcac
cgaggtgcgt tttggacgta agaaatgcgg atactggatt 240gagacctttg
tgccggggag ccagccgggc gagtttactt taggcgcaat taaaagttgg
300ccgggcatca catcaggatt ggtccgcgtc gtgagcacca actacaacca
gcatgccatg 360gtgttcttca agaaagtgaa tcagaaccgc gaggtttttt
ggatcacact gtacgggcgc 420acgaaagaac tgacaagcga gctgaaggaa
aattttatcc gcttttccaa atctctgggc 480ctccctgaaa accacatcgt
cttccctgtc ccaatcgacc agtgtatcga cggc 53489534DNAArtificial
SequenceDNA encoding an expressed protein amino acid sequence
89caggactcca cctcagacct gatcccagcc ccacctctga gcaaggtccc tctgcagcag
60aacttccagg acaaccaatt ccatgggaaa tggtatgtcg tgggcgtggc cggaaatgag
120gtgctgcgtg atgataagga tccggggaaa atgcctgcga ccatttacga
gttgaaagaa 180gataaatcat ataacgtcac cgaggtgagg tttcataata
agaaatgcaa ttactcgatt 240gagacctttg tgccggggag ccagccgggc
gagtttactt taggcaagat taaaagtaat 300ccgggcgtga catcaatgtt
ggtccgcgtc gtgagcacca actacaacca gcatgccatg 360gtgttcttca
agaatgtgaa gcagaaccgc gaggggtttt ggatcacact gtacgggcgc
420acgaaagaac tgacaagcga gctgaaggaa aattttatcc gcttttccaa
atctctgggc 480ctccctgaaa accacatcgt cttccctgtc ccaatcgacc
agtgtatcga cggc 53490534DNAArtificial SequenceDNA encoding an
expressed protein amino acid sequence 90caggactcca cctcagacct
gatcccagcc ccacctctga gcaaggtccc tctgcagcag 60aacttccagg acaaccaatt
ccatgggaaa tggtatgtcg tgggcgtggc cggaaatact 120gtgctgcgtg
atgataagga tccggggaaa atgcctgcga ccatttacga gttgaaagaa
180gataaatcat ataacgtcac cgaggtgagg tttcataata agaaatgcaa
ttactctatt 240gagacctttg tgccggggag ccagccgggc gagtttactt
taggcaatat taaaagttat 300ccgggccaga catcaatgtt ggtccgcgtc
gtgagcacca actacaacca gcatgccatg 360gtgttcttca agaaggtgaa
gcagaaccgc gaggtgtttt ggatcacact gtacgggcgc 420acgaaagaac
tgacaagcga gctgaaggaa aattttatcc gcttttccaa atctctgggc
480ctccctgaaa accacatcgt cttccctgtc ccaatcgacc agtgtatcga cggc
53491534DNAArtificial SequenceDNA encoding an expressed protein
amino acid sequence 91caggactcca cctcagacct gatcccagcc ccacctctga
gcaaggtccc tctgcagcag 60aacttccagg acaaccaatt ccatgggaaa tggtatgtcg
tgggcgttgc cggaaatacg 120gtgctgcgtg acgataagga tccgggtaaa
atgcctgcga ccatttacga gttgaaagaa 180gataaatcat ataacgtcac
cgaggtgcgg tttcataaga agaaatgcaa ttactttatt 240gagacctttg
tgccggggag ccagccgggc gagtttactt taggcaagat taaaagtcat
300ccgggccaga catcaatgtt ggtccgcgtc gtgagcacca actacaacca
gcatgccatg 360gtgttcttca agaaggtgaa gcagaaccgc gaggcgtttt
ggatcacact gtacgggcgc 420acgaaagaac tgacaagcga gctgaaggaa
aattttatcc gcttttccaa atctctgggc 480ctccctgaaa accacatcgt
cttccctgtc ccaatcgacc agtgtatcga cggc 53492534DNAArtificial
SequenceDNA encoding an expressed protein amino acid sequence
92caggactcca cctcagacct gatcccagcc ccacctctga gcaaggtccc tctgcagcag
60aacttccagg acaaccaatt ccatgggaaa tggtatgtcg tgggcgttgc cggaaatcag
120gtgctgcgtg atgataagga tccgggtaaa atgcctgcga ccatttacga
gttgaaagaa 180gataaatcat ataacgtcac cgaggtgagg tttcataata
agaaatgcaa ttactggatt 240gagacctttg tgccggggag ccagccgggc
gagtttactt taggcaatat taaaagtaat 300ccgggccata catcaatgtt
ggtccgcgtc gtgagcacca actacaacca gcatgccatg 360gtgttcttca
agaaggtgaa gcagaaccgc gagggttttt ggatcacact gtacgggcgc
420acgaaagaac tgacaagcga gctgaaggaa aattttatcc gcttttccaa
atctctgggc 480ctccctgaaa accacatcgt cttccctgtc ccaatcgacc
agtgtatcga cggc 53493534DNAArtificial SequenceDNA encoding an
expressed protein amino acid sequence 93caggactcca cctcagacct
gatcccagcc ccacctctga gcaaggtccc tctgcagcag 60aacttccagg acaaccaatt
ccatgggaaa tggtatgtcg tgggcgttgc cggaaatacg 120attctgcgtg
aggataagga tccggggaaa atgaatgcga ccatttacga gttgaaagaa
180gataaatcat ataacgtcac cgatgtgagg tttattttta agaaatgcca
ttactatatt 240gatacctttg tgccggggag ccagccgggc gagtttactt
taggcaatat taaaagttat 300ccgggcatga catcacagtt ggtccgcgtc
gtgagcacca actacaacca gcatgccatg 360gtgttcttca agattgtgag
gcagaaccgc gagatttttt ggatcacact gtacgggcgc 420acgaaagaac
tgacaagcga gctgaaggaa aattttatcc gcttttccaa atctctgggc
480ctccctgaaa accacatcgt cttccctgtc ccaatcgacc agtgtatcga cggc
53494534DNAArtificial SequenceDNA encoding an expressed protein
amino acid sequence 94caggactcca cctcagacct gatcccagcc ccacctctga
gcaaggtccc tctgcagcag 60aacttccagg acaaccaatt ccatgggaaa tggtatgtcg
tgggcgtggc cggaaatact 120attctgcgtg aggataagga tccggggaaa
atgaatgcaa ccatttacga gttgaaagaa 180gataaatcat ataacgtcac
cgatgtgagg tttattagga agaaatgcca ttactatatt 240gatacctttg
tgccggggag ccagccgggc gagtttactt taggcaatat taaaagttat
300ccgggcacta catcacagtt ggtccgcgtc gtgagcacca actacaacca
gcatgccatg 360gtgttcttca agattgtgag gcagaaccgc gagatttttt
ggatcacact gtacgggcgc 420acgaaagaac tgacaagcga gctgaaggaa
aattttatcc gcttttccaa atctctgggc 480ctccctgaaa accacatcgt
cttccctgtc ccaatcgacc agtgtatcga cggc 53495534DNAArtificial
SequenceS0475.06L06_N65D_S79F 95caggactcca cctcagacct gatcccagcc
ccacctctga gcaaggtccc tctgcagcag 60aacttccagg acaaccaatt ccatgggaaa
tggtatgtcg tgggcgtggc cggaaatgag 120gtgctgcgtg atgataagga
tccggggaaa atgcctgcga ccatttacga gttgaaagaa 180gataaatcat
atgatgtcac cgaggtgagg tttcataata agaaatgcaa ttacttcatt
240gagacctttg tgccggggag ccagccgggc gagtttactt taggcaagat
taaaagtaat 300ccgggcgtga catcaatgtt ggtccgcgtc gtgagcacca
actacaacca gcatgccatg 360gtgttcttca agaatgtgaa gcagaaccgc
gaggggtttt ggatcacact gtacgggcgc 420acgaaagaac tgacaagcga
gctgaaggaa aattttatcc gcttttccaa atctctgggc 480ctccctgaaa
accacatcgt cttccctgtc ccaatcgacc agtgtatcga cggc
53496534DNAArtificial SequenceDNA encoding an expressed protein
amino acid sequence 96caggactcca cctcagacct gatcccagcc ccacctctga
gcaaggtccc tctgcagcag 60aacttccagg acaaccaatt ccatgggaaa tggtatgtcg
tgggcgtggc cggaaatgag 120gtgctgcgtg atgataagga tccggggaaa
atgcctgcga ccatttacga gttgaaagaa 180gataaatcat atcaggtcac
cgaggtgagg tttcataata agaaatgcaa ttacttcatt 240gagacctttg
tgccggggag ccagccgggc gagtttactt taggcaagat taaaagtaat
300ccgggcgtga catcaatgtt ggtccgcgtc gtgagcacca actacaacca
gcatgccatg 360gtgttcttca agaatgtgaa gcagaaccgc gaggggtttt
ggatcacact gtacgggcgc 420acgaaagaac tgacaagcga gctgaaggaa
aattttatcc gcttttccaa atctctgggc 480ctccctgaaa accacatcgt
cttccctgtc ccaatcgacc agtgtatcga cggc 53497534DNAArtificial
SequenceDNA encoding an expressed protein amino acid sequence
97caggactcca cctcagacct gatcccagcc ccacctctga gcaaggtccc tctgcagcag
60aacttccagg acaaccaatt ccatgggaaa tggtatgtcg tgggcgtggc cggaaatact
120attctgcgtg aggataagga tccggggaaa atgaatgcag ccatttacga
gttgaaagaa 180gataaatcat atgatgtcac cgatgtgagg tttattagga
agaaatgcca ttactatatt 240gatacctttg tgccggggag ccagccgggc
gagtttactt taggcaatat taaaagttat 300ccgggcacta catcacagtt
ggtccgcgtc gtgagcacca actacaacca gcatgccatg 360gtgttcttca
agattgtgag gcagaaccgc gagatttttt ggatcacact gtacgggcgc
420acgaaagaac tgacaagcga gctgaaggaa aattttatcc gcttttccaa
atctctgggc 480ctccctgaaa accacatcgt cttccctgtc ccaatcgacc
agtgtatcga cggc 53498534DNAArtificial SequenceDNA encoding an
expressed protein amino acid sequence 98caggactcca cctcagacct
gatcccagcc ccacctctga gcaaggtccc tctgcagcag 60aacttccagg acaaccaatt
ccatgggaaa tggtatgtcg tgggcgtggc cggaaatact 120attctgcgtg
aggataagga tccggggaaa atgaatgcag ccatttacga gttgaaagaa
180gataaatcat atcaggtcac cgatgtgagg tttattagga agaaatgcca
ttactatatt 240gatacctttg tgccggggag ccagccgggc gagtttactt
taggcaatat taaaagttat 300ccgggcacta catcacagtt ggtccgcgtc
gtgagcacca actacaacca gcatgccatg 360gtgttcttca agattgtgag
gcagaaccgc gagatttttt ggatcacact gtacgggcgc 420acgaaagaac
tgacaagcga gctgaaggaa aattttatcc gcttttccaa atctctgggc
480ctccctgaaa accacatcgt cttccctgtc ccaatcgacc agtgtatcga cggc
53499534DNAArtificial SequenceDNA encoding an expressed protein
amino acid sequence 99caggactcca cctcagacct gatcccagcc ccacctctga
gcaaggtccc tctgcagcag 60aacttccagg acaaccaatt ccaagggaaa tggtatgtcg
tgggcgtggc cggaaatact 120attctgcgtg aggataagga tccggggaaa
atgaatgcag ccatttacga gttgaaagaa 180gataaatcat atgatgtcac
cgatgtgagg tttattagga agaaatgcca ttactatatt 240gatacctttg
tgccggggag ccagccgggc gagtttactt taggcaatat taaaagttat
300ccgggcacta catcacagtt ggtccgcgtc gtgagcacca actacaacca
gcatgccatg 360gtgttcttca agattgtgag gcagaaccgc gagatttttt
ggatcacact gtacgggcgc 420acgaaagaac tgacaagcga gctgaaggaa
aattttatcc gcttttccaa atctctgggc 480ctccctgaaa accacatcgt
cttccctgtc ccaatcgacc agtgtatcga cggc 534100534DNAArtificial
SequenceDNA encoding an expressed protein amino acid sequence
100caggactcca cctcagacct gatcccagcc ccacctctga gcaaggtccc
tctgcagcag 60aacttccagg acaaccaatt ccatgggaaa tggtatgtcg tgggcgtggc
cggaaatact 120attctgcgtg aggataagga tccggggaaa atgaatgcaa
ccatttacga gttgaaagaa 180gataaatcat atcaggtcac cgatgtgagg
tttattagga agaaatgcca ttactatatt 240gatacctttg tgccggggag
ccagccgggc gagtttactt taggcaatat taaaagttat 300ccgggcacta
catcacagtt ggtccgcgtc gtgagcacca actacaacca gcatgccatg
360gtgttcttca agattgtgag gcagaaccgc gagatttttt ggatcacact
gtacgggcgc 420acgaaagaac tgacaagcga gctgaaggaa aattttatcc
gcttttccaa atctctgggc 480ctccctgaaa accacatcgt cttccctgtc
ccaatcgacc agtgtatcga cggc 534101534DNAArtificial SequenceDNA
encoding an expressed protein amino acid sequence 101caggactcca
cctcagacct gatcccagcc ccacctctga gcaaggtccc tctgcagcag 60aacttccagg
acaaccaatt ccatgggaaa tggtatgtcg tgggcttcgc cggaaattgg
120atgctgcgtg aggataagga tccgcacaaa atgaatgcga ccatttacga
gttgaaagaa 180gataaatcat ataacgtcac cgaggtgaaa tttcaagcaa
agaaatgcat ctacagcatt 240cacacctttg tgccggggag ccagccgggc
gagtttactt taggcatcat taaaagtaat 300ccgggcggaa catcagagtt
ggtccgcgtc gtgagcacca actacaacca gcatgccatg 360gtgttcttca
agtgggtgca ccagaaccgc gagttctttc aaatcacact gtacgggcgc
420acgaaagaac tgacaagcga gctgaaggaa aattttatcc gcttttccaa
atctctgggc 480ctccctgaaa accacatcgt cttccctgtc ccaatcgacc
agtgtatcga cggc 534102534DNAArtificial SequenceDNA encoding an
expressed protein amino acid sequence 102caggactcca cctcagacct
gatcccagcc ccacctctga gcaaggtccc tctgcagcag 60aacttccagg acaaccaatt
ccatgggaaa tggtatgtcg tgggcttcgc cggaaatcgt 120tggctgcgtg
aggataagga tccgatcaaa atgtacgcga ccatttacga gttgaaagaa
180gataaatcat ataacgtcac ccaagtgaat ttttggctga agaaatgcgc
atacagcatt 240agcacctttg tgccggggag ccagccgggc gagtttactt
taggccgtat taaaagtatc 300ccgggcccta catcagagtt ggtccgcgtc
gtgagcacca actacaacca gcatgccatg 360gtgttcttca agaccgtgat
ccagaaccgc gagttctttg agatcacact gtacgggcgc 420acgaaagaac
tgacaagcga gctgaaggaa aattttatcc gcttttccaa atctctgggc
480ctccctgaaa accacatcgt cttccctgtc ccaatcgacc agtgtatcga cggc
534103534DNAArtificial SequenceDNA encoding an expressed protein
amino acid sequence 103caggactcca cctcagacct gatcccagcc ccacctctga
gcaaggtccc tctgcagcag 60aacttccagg acaaccaatt ccatgggaaa tggtatgtcg
tgggcttcgc cggaaatctg 120ctgctgcgtg aggataagga tccgcgtaaa
atgcgtgcga ccatttacga gttgaaagaa 180gataaatcat ataacgtcac
cgacgtgcgt tttctgtaca agaaatgcat ctacagcatt 240gcaacctttg
tgccggggag ccagccgggc gagtttactt taggcggaat taaaagtgca
300ccgggcttca catcagagtt ggtccgcgtc gtgagcacca actacaacca
gcatgccatg 360gtgttcttca agtgggtggc acagaaccgc gagtactttg
agatcacact gtacgggcgc 420acgaaagaac tgacaagcga gctgaaggaa
aattttatcc gcttttccaa atctctgggc 480ctccctgaaa accacatcgt
cttccctgtc ccaatcgacc agtgtatcga cggc 534104534DNAArtificial
SequenceDNA encoding an expressed protein amino acid sequence
104caggactcca cctcagacct gatcccagcc ccacctctga gcaaggtccc
tctgcagcag 60aacttccagg acaaccaatt ccatgggaaa tggtatgtcg tgggcttcgc
cggaaattgg 120cgtctgcgtg aggataagga tccgcctaaa atgagcgcga
ccatttacga gttgaaagaa 180gataaatcat ataacgtcac caatgtgcgt
ttttggccta agaaatgccg ttacagcatt 240agcacctttg tgccggggag
ccagccgggc gagtttactt taggcatgat taaaagtcct 300ccgggcggaa
catcagagtt ggtccgcgtc gtgagcacca actacaacca gcatgccatg
360gtgttcttca agtgggtgtt ccagaaccgc gagttctttg agatcacact
gtacgggcgc 420acgaaagaac tgacaagcga gctgaaggaa aattttatcc
gcttttccaa atctctgggc 480ctccctgaaa accacatcgt cttccctgtc
ccaatcgacc agtgtatcga cggc 534105534DNAArtificial SequenceDNA
encoding an expressed protein amino acid sequence 105caggactcca
cctcagacct gatcccagcc ccacctctga gcaaggtccc tctgcagcag 60aacttccagg
acaaccaatt ccatgggaaa tggtatgtcg tgggcgaggc cggaaatctg
120gcactgcgtg aggataagga tccgaaaaaa atgatggcga ccatttacga
gttgaaagaa 180gataaatcat ataacgtcac cgaggtgcgt tttcgtcaca
agaaatgcca atacgacatt 240gcaacctttg tgccggggag ccagccgggc
gagtttactt taggcctgat taaaagtgac 300ccgggccaaa catcagagtt
ggtccgcgtc gtgagcacca actacaacca gcatgccatg 360gtgttcttca
agaaagtggt tcagaaccgc gagttctttt ggatcacact gtacgggcgc
420acgaaagaac tgacaagcga gctgaaggaa aattttatcc gcttttccaa
atctctgggc 480ctccctgaaa accacatcgt cttccctgtc ccaatcgacc
agtgtatcga cggc 534106534DNAArtificial SequenceDNA encoding an
expressed protein amino acid sequence 106caggactcca cctcagacct
gatcccagcc ccacctctga gcaaggtccc tctgcagcag 60aacttccagg acaaccaatt
ccatgggaaa tggtatgtcg tgggcgaggc cggaaatctt 120gctctgcgtg
aggataagga tccgatgaaa atgatggcga ccatttacga gttgaaagaa
180gataaatcat ataacgtcac cgaggtgagg tttaggcaga agaaatgcaa
gtacgatatt 240gttacctttg tgccggggag ccagccgggc gagtttactt
taggccttat taaaagtgat 300ccgggccaga catcagagtt ggtccgcgtc
gtgagcacca actacaacca gcatgccatg 360gtgttcttca agaaggtggt
tcagaaccgc gagtattttt ggatcacact gtacgggcgc 420acgaaagaac
tgacaagcga gctgaaggaa aattttatcc gcttttccaa atctctgggc
480ctccctgaaa accacatcgt cttccctgtc ccaatcgacc agtgtatcga cggc
534107534DNAArtificial SequenceDNA encoding an expressed protein
amino acid sequence 107caggactcca cctcagacct gatcccagcc ccacctctga
gcaaggtccc tctgcagcag 60aacttccagg acaaccaatt ccatgggaaa tggtatgtcg
tgggcgaggc cggaaatctt 120actctgcgtg aggataagga tccgatgaaa
atgatggcga ccatttacga gttgaaagaa 180gataaatcat ataacgtcac
cgaggtgagg tttaggcgta agaaatgcaa gtacgatatt 240gttacctttg
tgccggggag ccagccgggc gagtttactt taggcgtgat taaaagtgat
300ccgggccaga catcagagtt ggtccgcgtc gtgagcacca actacaacca
gcatgccatg 360gtgttcttca agaaggtggt tcagaaccgc gagtattttt
ggatcacact gtacgggcgc 420acgaaagaac tgacaagcga gctgaaggaa
aattttatcc gcttttccaa atctctgggc 480ctccctgaaa accacatcgt
cttccctgtc ccaatcgacc agtgtatcga cggc 534108534DNAArtificial
SequenceDNA encoding an expressed protein amino acid sequence
108caggactcca cctcagacct gatcccagcc ccacctctga gcaaggtccc
tctgcagcag 60aacttccagg acaaccaatt ccatgggaaa tggtatgtcg tgggcgaggc
cggaaatctt 120gctctgcgtg aggataagga tccgatgaaa atgatggcga
ccatttacga gttgaaagaa 180gataaatcat ataacgtcac cgaggtgagg
tttaggcata agaaatgcaa gtacgatatt 240gttacctttg tgccggggag
ccagccgggc gagtttactt taggccttat taaaagtgat 300ccgggccaga
catcagagtt ggtccgcgtc gtgagcacca actacaacca gcatgccatg
360gtgttcttca agaaggtggt tcagaaccgc gagtattttt ggatcacact
gtacgggcgc 420acgaaagaac tgacaagcga gctgaaggaa aattttatcc
gcttttccaa atctctgggc 480ctccctgaaa accacatcgt cttccctgtc
ccaatcgacc agtgtatcga cggc 534109522DNAArtificial SequenceDNA
encoding an expressed protein amino acid sequence 109caggactcca
cctcagacct gatcccagcc ccacctctga gcaaggtccc tctgcagcag 60aacttccagg
acaaccaatt ccatgggaaa tggtatgtcg tgggcgaggc cggaaatctt
120gctctgcgtg aggataagga tccgaagaaa atgatggcga ccatttacga
gttgaaagaa 180gataaatcat ataacgtcac cgaggtgagg tttcggtata
agaaatgcca gtacgatatt 240gttacctttg tgccggggag ccagccgggc
gagtttactt taagtgagcc gggccagaca 300tcagagttgg tccgcgtcgt
gagcaccaac tacaaccagc atgccatggt gttcttcaag 360aaggtggtgc
agaaccgcga gtttttttgg atcacactgt acgggcgcac gaaagaactg
420acaagcgagc tgaaggaaaa ttttatccgc ttttccaaat ctctgggcct
ccctgaaaac 480cacatcgtct tccctgtccc aatcgaccag tgtatcgacg gc
522110534DNAArtificial SequenceDNA encoding an expressed protein
amino acid sequence 110caggactcca cctcagacct gatcccagcc ccacctctga
gcaaggtccc tctgcagcag 60aacttccagg acaaccaatt
ccatgggaaa tggtatgtcg tgggcgaggc cggaaatctt 120gctcggcgtg
aggataagga tccgatgaaa atgatggcga ccatttacga gttgaaagaa
180gataaatcat ataacgtcac cgaggtgagg tttaggcata agaaatgcaa
gtacgatatt 240gttacctttg tgccggggag ccagccgggc gagtttactt
taggccttat taaaagtgat 300ccgggccaga caccagagtt ggtccgcgtc
gtgagcacca actacaacca gcatgccatg 360gtgttcttca agaaggtggt
ccagaaccgc gagtattttt ggatcacact gtacgggcgc 420acgaaagaac
tgacaagcga gctgaaggaa aattttatcc gcttttccaa atctctgggc
480ctccctgaaa accacatcgt cttccctgtc ccaatcgacc agtgtatcga cggc
534111534DNAArtificial SequenceDNA encoding an expressed protein
amino acid sequence 111caggactcca cctcagacct gatcccagcc ccacctctga
gcaaggtccc tctgcagcag 60aacttccagg acaaccaatt ccatgggaaa tggtatgtcg
tgggcgaggc cggaaatctt 120gctctgcgtg aggataagaa tccgatgaaa
atgatggcga ccatttacga gttgaaagaa 180gataaatcat ataacgtcac
cgaggtgagg tttaggcata agaaatgcaa gtacgatatt 240gttaccttcg
tgccggggag ccagccgggc gagtttactt taggccttat taaaagtgat
300ccgggccaga cgccagagtt ggtccgcgtc gtgagcacca actacaacca
gcatgccatg 360gtgttcttca agaaggtggt tcagaaccgc gagtattttt
ggatcacact gtacgggcgc 420acgaaagaac tgccaagcga gctgaaggaa
aattttatcc gcttttccaa atctctgggc 480ctccctgaaa accacatcgt
cttccctgtc ccaatcgacc agtgtatcga cggc 534112534DNAArtificial
SequenceDNA encoding an expressed protein amino acid sequence
112caggactcca cctcagacct gatcccagcc ccacctctga gcaaggtccc
tctgcagcag 60aacttccagg acaaccaatt ccatgggaaa tggtatgtcg tgggcgaggc
cggaaatctt 120gctctgcgtg agggtaggga tccgatgaaa atgatggcga
ccatttacga gttgaaagaa 180gataaatcat ataacgtcac cgaggtgagg
tttaggcata agaaatgcaa gtacgatatt 240gttacctttg tgccggggag
ccagccgggc gagtttactt taggccttat taaaagtgat 300ccgggccaga
caccagagtt ggtccgcgtc gtgagcacca actacaacca gcatgccatg
360gtgttcttca agaaggtggt tcagaaccgc gagtattttt ggatcacact
gtacgggcgc 420acgaaagaac tgacaagcga gctgaaggaa aattttatcc
gcttttccaa atctctgggc 480ctccctgaaa accacatcgt cttccctgtc
ccaatcgacc agtgtatcga cggc 534113534DNAArtificial SequenceDNA
encoding an expressed protein amino acid sequence 113caggactcca
cctcagacct gatcccagcc ccacctctga gcaaggtccc tctgcagcag 60aacttccagg
acaaccaatt ccatgggaaa tggtatgtcg tgggcgaggc cggaaatctt
120gctcggcgtg aggataagga tccgatgaaa atgatggcga ccatttacga
gttgaaagaa 180gataaatcat atgacgtcac cgaggtgagg tttaggcata
agaaatgcaa gtacgatatt 240gttacctttg tgccggggag ccagccgggc
gagtttactt taggccttat taaaagtgat 300ccgggccaga caccagagtt
ggtccgcgtc gtgagcacca actacaacca gcatgccatg 360gtgttcttca
agaaggtggt ccagaaccgc gagtattttt ggatcacact gtacgggcgc
420acgaaagaac tgacaagcga gctgaaggaa aattttatcc gcttttccaa
atctctgggc 480ctccctgaaa accacatcgt cttccctgtc ccaatcgacc
agtgtatcga cggc 534114534DNAArtificial SequenceDNA encoding an
expressed protein amino acid sequence 114caggactcca cctcagacct
gatcccagcc ccacctctga gcaaggtccc tctgcagcag 60aacttccagg acaaccaatt
ccatgggaaa tggtatgtcg tgggcgaggc cggaaatctt 120gctctgcgtg
aggataagaa tccgatgaaa atgatggcga ccatttacga gttgaaagaa
180gataaatcat atgacgtcac cgaggtgagg tttaggcata agaaatgcaa
gtacgatatt 240gttaccttcg tgccggggag ccagccgggc gagtttactt
taggccttat taaaagtgat 300ccgggccaga cgccagagtt ggtccgcgtc
gtgagcacca actacaacca gcatgccatg 360gtgttcttca agaaggtggt
tcagaaccgc gagtattttt ggatcacact gtacgggcgc 420acgaaagaac
tgccaagcga gctgaaggaa aattttatcc gcttttccaa atctctgggc
480ctccctgaaa accacatcgt cttccctgtc ccaatcgacc agtgtatcga cggc
534115534DNAArtificial SequenceDNA encoding an expressed protein
amino acid sequence 115caggactcca cctcagacct gatcccagcc ccacctctga
gcaaggtccc tctgcagcag 60aacttccagg acaaccaatt ccatgggaaa tggtatgtcg
tgggcgaggc cggaaatctt 120gctctgcgtg agggtaggga tccgatgaaa
atgatggcga ccatttacga gttgaaagaa 180gataaatcat atgacgtcac
cgaggtgagg tttaggcata agaaatgcaa gtacgatatt 240gttacctttg
tgccggggag ccagccgggc gagtttactt taggccttat taaaagtgat
300ccgggccaga caccagagtt ggtccgcgtc gtgagcacca actacaacca
gcatgccatg 360gtgttcttca agaaggtggt tcagaaccgc gagtattttt
ggatcacact gtacgggcgc 420acgaaagaac tgacaagcga gctgaaggaa
aattttatcc gcttttccaa atctctgggc 480ctccctgaaa accacatcgt
cttccctgtc ccaatcgacc agtgtatcga cggc 534116534DNAArtificial
SequenceDNA encoding an expressed protein amino acid sequence
116caggactcca cctcagacct gatcccagcc ccacctctga gcaaggtccc
tctgcagcag 60aacttccagg acaaccaatt ccaagggaaa tggtatgtcg tgggcgaggc
cggaaatctt 120gctcggcgtg aggataagga tccgatgaaa atgatggcga
ccatttacga gttgaaagaa 180gataaatcat atgacgtcac cgaggtgagg
tttaggcata agaaatgcaa gtacgatatt 240gttacctttg tgccggggag
ccagccgggc gagtttactt taggccttat taaaagtgat 300ccgggccaga
caccagagtt ggtccgcgtc gtgagcacca actacaacca gcatgccatg
360gtgttcttca agaaggtggt ccagaaccgc gagtattttt ggatcacact
gtacgggcgc 420acgaaagaac tgacaagcga gctgaaggaa aattttatcc
gcttttccaa atctctgggc 480ctccctgaaa accacatcgt cttccctgtc
ccaatcgacc agtgtatcga cggc 534117534DNAArtificial SequenceDNA
encoding an expressed protein amino acid sequence 117caggactcca
cctcagacct gatcccagcc ccacctctga gcaaggtccc tctgcagcag 60aacttccagg
acaaccaatt ccatgggaaa tggtatgtcg tgggcctggc cggaaatatc
120ctgctgcgtg aggataagga tccgcacaaa atgctggcga ccatttacga
gttgaaagaa 180gataaatcat ataacgtcac ccacgtgacc tttaaatgga
agaaatgcta ctacgcaatt 240cgtacctttg tgccggggag ccagccgggc
gagtttactt taggcatgat taaaagtgag 300ccgggccaca catcaatgtt
ggtccgcgtc gtgagcacca actacaacca gcatgccatg 360gtgttcttca
agtgggtgga ccagaaccgc gaggagtttc tgatcacact gtacgggcgc
420acgaaagaac tgacaagcga gctgaaggaa aattttatcc gcttttccaa
atctctgggc 480ctccctgaaa accacatcgt cttccctgtc ccaatcgacc
agtgtatcga cggc 534118534DNAArtificial SequenceDNA encoding an
expressed protein amino acid sequence 118caggactcca cctcagacct
gatcccagcc ccacctctga gcaaggtccc tctgcagcag 60aacttccagg acaaccaatt
ccatgggaaa tggtatgtcg tgggccacgc cggaaatcaa 120tggctgcgtg
aggataagga tccgcgtaaa atgtgggcga ccatttacga gttgaaagaa
180gataaatcat ataacgtcac cgacgtggac tttgcaatca agaaatgcca
ctaccgtatt 240accacctttg tgccggggag ccagccgggc gagtttactt
taggcaatat taaaagtcac 300ccgggcggaa catcaggatt ggtccgcgtc
gtgagcacca actacaacca gcatgccatg 360gtgttcttca agttcgtgat
ccagaaccgc gaggcatttt tcatcacact gtacgggcgc 420acgaaagaac
tgacaagcga gctgaaggaa aattttatcc gcttttccaa atctctgggc
480ctccctgaaa accacatcgt cttccctgtc ccaatcgacc agtgtatcga cggc
534119534DNAArtificial SequenceDNA encoding an expressed protein
amino acid sequence 119caggactcca cctcagacct gatcccagcc ccacctctga
gcaaggtccc tctgcagcag 60aacttccagg acaaccaatt ccatgggaaa tggtatgtcg
tgggcatggc cggaaatttc 120cacctgcgtg aggataagga tccgagcaaa
atgcctgcga ccatttacga gttgaaagaa 180gataaatcat ataacgtcac
ccacgtgcct ttttgggcaa agaaatgcgc atacaaaatt 240atcacctttg
tgccggggag ccagccgggc gagtttactt taggcgcaat taaaagtgga
300ccgggcatga catcatggtt ggtccgcgtc gtgagcacca actacaacca
gcatgccatg 360gtgttcttca agggagtgtg gcagaaccgc gagacctttg
ttatcacact gtacgggcgc 420acgaaagaac tgacaagcga gctgaaggaa
aattttatcc gcttttccaa atctctgggc 480ctccctgaaa accacatcgt
cttccctgtc ccaatcgacc agtgtatcga cggc 534120534DNAArtificial
SequenceDNA encoding an expressed protein amino acid sequence
120caggactcca cctcagacct gatcccagcc ccacctctga gcaaggtccc
tctgcagcag 60aacttccagg acaaccaatt ccatgggaaa tggtatgtcg tgggcgttgc
cggaaattac 120tggctgcgtg aggataagga tccggcaaaa atgtacgcga
ccatttacga gttgaaagaa 180gataaatcat ataacgtcac cgacgtgcgt
ttttggcgta agaaatgccg ttacgacatt 240tggacctttg tgccggggag
ccagccgggc gagtttactt taggccctat taaaagtgag 300ccgggccaaa
catcacggtt ggtccgcgtc gtgagcacca actacaacca gcatgccatg
360gtgttcttca agctggtgcg tcagaaccgc gaggcattta atatcacact
gtacgggcgc 420acgaaagaac tgacaagcga gctgaaggaa aattttatcc
gcttttccaa atctctgggc 480ctccctgaaa accacatcgt cttccctgtc
ccaatcgacc agtgtatcga cggc 534121534DNAArtificial SequenceDNA
encoding an expressed protein amino acid sequence 121caggactcca
cctcagacct gatcccagcc ccacctctga gcaaggtccc tctgcagcag 60aacttccagg
acaaccaatt ccatgggaaa tggtatgtcc tgggcatggc cggaaatttc
120cacctgcgtg aggataagga tccgagcaag atgcctgcga ccatttacga
gttgaaagaa 180gataaatcat ataacgtcac ccacgtgcct ttttgggcaa
agaaatgcgc atacaaaact 240atcacctttg tgccggggag ccagccgggc
gagtttactt taggcgcaat taaaagtgga 300ccgggcatga catcatggtt
ggtccgcgtc gtgagcacca actacaacca gcatgccatg 360gtgttctcca
agggagtgtg gcagaaccgc gagacctttg ttatcacact gtacgggcgc
420gcgaaagaac tgacaagcga gctgaaggaa aattttatcc gcttttccaa
atctctgggc 480ctccctgaaa accacatcgt cttccctgtc ccaatcgacc
agtgtatcga cggc 534122534DNAArtificial SequenceDNA encoding an
expressed protein amino acid sequence 122caggactcca cctcagacct
gatcccagcc ccacctctga gcaaggtccc tctgcagcag 60aacttccagg acaaccaatt
ccatgggaaa tggtatgtcg tgggcatggc cggaaatttc 120cacctgcgtg
aggataagga tccgagcaaa atgcctgcga ccatttacga gttgaaagaa
180gataaatcat ataacgtcac ccacgtgcct ttttgggcaa agaaatgcgc
atacaaaact 240atcacctttg tgccggggag ccagccgggc gagtttactt
taggcgcaat taaaagtgga 300ccgggcatga catcatggtt ggtccgcgtc
gtgagcacca actacaacca gcatgccatg 360gtgttctcca agggagtgtg
gcagaaccgt gagacctttg ttatcacact gtacgggcgc 420acgaaagaac
tgacaagcga gctgaaggaa aattttatcc gcttttccaa atctctgggc
480ctccctgaaa accacatcgt cttccctgtc ccaatcgacc agtgtatcga cggc
534123534DNAArtificial SequenceDNA encoding an expressed protein
amino acid sequence 123caggactcca cctcagacct gatcccagcc ccacctctga
gcaaggtccc tctgcagcag 60aacttccagg acaaccaatt ccatgggaaa tggtatgtcg
tgggccacgc cggaaatcaa 120tggctgcgtg agggtaggga tccgcgtaaa
atgtgggcga ccatttacga gttgaaagaa 180gataaatcat ataacgtcac
cgacgtggac tttgcaatca agaaatgcct ctaccgtatt 240accacctttg
tgccagggag ccagccgggc gagtttactt taggcaatat taaaagtcac
300ccgggcggaa catcaggatt ggtccgcgtc gtgagcacca actacaacca
gcatgccatg 360gtgttcttca agttcgtgat ccagaaccgc gaggcatttt
tcatcacact gtacgggcgc 420acgaaagaac tgacaagcga gctgaaggaa
aattttatcc gcttttccaa atctctgggc 480ctccctgaaa accacatcgt
cttccctgtc ccaatcgacc agtgtatcga cggc 534124534DNAArtificial
SequenceDNA encoding an expressed protein amino acid sequence
124caggactcca cctcagacct gatcccagcc ccacctctga gcaaggtccc
tctgcagcag 60aacttccagg acaaccaatt ccatgggaaa tggtatgtcg tgggccacgc
cggaaatcaa 120tggctgcgtg gggattacga tccgcgtaaa atgtgggcga
ccatttacga gttgaaagaa 180gataaatcat ataacgtcac cgacgtggac
tttgcaatcg agaaatgcca ctaccgtatt 240accacctttg tgccggggag
ccagccgggc gagtttactt ttggcaatat aaaaagtcac 300ccgggcggaa
catcaggatt ggcccgcgtc gtgagcacca actacaacca gcatgccatg
360gtgttcttca agttcgtgat ccagaaccgc gaggcatttt tcatcacact
gtacgggcgc 420acgaaagaac tgacaagcga gctgaaggaa aattttatcc
gcttttccaa atctctgggc 480ctccctgaaa accacatcgt cttccctgtc
ccaatcgacc agtgtatcga cggc 534125534DNAArtificial SequenceDNA
encoding an expressed protein amino acid sequence 125caggactcca
cctcagacct gatcccagcc ccacctctga gcaaggtccc tctgcagcag 60aacttccagg
acaaccaatt ccaagggaaa tggtatgtcg tgggccacgc cggaaatcaa
120tggctgcgtg agggtaggga tccgcgtaaa atgtgggcga ccatttacga
gttgaaagaa 180gataaatcat atgacgtcac cgacgtggac tttgcaatca
agaaatgcct ctaccgtatt 240accacctttg tgccagggag ccagccgggc
gagtttactt taggcaatat taaaagtcac 300ccgggcggaa catcaggatt
ggtccgcgtc gtgagcacca actacaacca gcatgccatg 360gtgttcttca
agttcgtgat ccagaaccgc gaggcatttt tcatcacact gtacgggcgc
420acgaaagaac tgacaagcga gctgaaggaa aattttatcc gcttttccaa
atctctgggc 480ctccctgaaa accacatcgt cttccctgtc ccaatcgacc
agtgtatcga cggc 534126534DNAArtificial SequenceDNA encoding an
expressed protein amino acid sequence 126caggactcca cctcagacct
gatcccagcc ccacctctga gcaaggtccc tctgcagcag 60aacttccagg acaaccaatt
ccatgggaaa tggtatgtcg tgggccacgc cggaaatcaa 120tggctgcgtg
gggattacga tccgcgtaaa atgtgggcga ccatttacga gttgaaagaa
180gataaatcat atgacgtcac cgacgtggac tttgcaatcg agaaatgcca
ctaccgtatt 240accacctttg tgccggggag ccagccgggc gagtttactt
ttggcaatat aaaaagtcac 300ccgggcggaa catcaggatt ggcccgcgtc
gtgagcacca actacaacca gcatgccatg 360gtgttcttca agttcgtgat
ccagaaccgc gaggcatttt tcatcacact gtacgggcgc 420acgaaagaac
tgacaagcga gctgaaggaa aattttatcc gcttttccaa atctctgggc
480ctccctgaaa accacatcgt cttccctgtc ccaatcgacc agtgtatcga cggc
53412710PRTArtificial SequenceC-terminal sequence of muteins 127Ser
Ala Trp Ser His Pro Gln Phe Glu Lys 1 5 10 1288PRTArtificial
SequenceSA linker and the Strep Tag II 128Trp Ser His Pro Gln Phe
Glu Lys 1 5 129200PRTArtificial SequenceExpressed protein amino
acid sequence 129Met Lys His His His His His His Asp Tyr Asp Ile
Pro Thr Thr Glu 1 5 10 15 Asn Leu Tyr Phe Gln Gly Gln Asp Ser Thr
Ser Asp Leu Ile Pro Ala 20 25 30 Pro Pro Leu Ser Lys Val Pro Leu
Gln Gln Asn Phe Gln Asp Asn Gln 35 40 45 Phe His Gly Lys Trp Tyr
Val Val Gly Val Ala Gly Asn Thr Ile Leu 50 55 60 Arg Glu Asp Lys
Asp Pro Gly Lys Met Asn Ala Thr Ile Tyr Glu Leu 65 70 75 80 Lys Glu
Asp Lys Ser Tyr Asn Val Thr Asp Val Arg Phe Ile Arg Lys 85 90 95
Lys Cys His Tyr Tyr Ile Asp Thr Phe Val Pro Gly Ser Gln Pro Gly 100
105 110 Glu Phe Thr Leu Gly Asn Ile Lys Ser Tyr Pro Gly Thr Thr Ser
Gln 115 120 125 Leu Val Arg Val Val Ser Thr Asn Tyr Asn Gln His Ala
Met Val Phe 130 135 140 Phe Lys Ile Val Arg Gln Asn Arg Glu Ile Phe
Trp Ile Thr Leu Tyr 145 150 155 160 Gly Arg Thr Lys Glu Leu Thr Ser
Glu Leu Lys Glu Asn Phe Ile Arg 165 170 175 Phe Ser Lys Ser Leu Gly
Leu Pro Glu Asn His Ile Val Phe Pro Val 180 185 190 Pro Ile Asp Gln
Cys Ile Asp Gly 195 200 1304PRTArtificial Sequencepositions 95-98
of the WT NGAL 130Gly Asn Ile Lys 1 1316PRTArtificial
Sequenceexamples of albumin binding peptidesMISC_FEATURE(2)..(2)Xaa
can be any of Asp, Asn, Ser, Thr, or TrpMISC_FEATURE(3)..(3)Xaa can
be any of Asn, Gln, His, Ile, Leu, or LysMISC_FEATURE(4)..(4)Xaa
can be any of Ala, Asp, Phe, Trp, or TyrMISC_FEATURE(5)..(5)Xaa can
be any of Asp, Gly, Leu, Phe, Ser, or Thr 131Cys Xaa Xaa Xaa Xaa
Cys 1 5 1327PRTArtificial SequenceLinker 132Asp Tyr Asp Ile Pro Thr
Thr 1 5 1337PRTArtificial Sequenceprotease cleavage site 133Glu Asn
Leu Tyr Phe Gln Gly 1 5
* * * * *