U.S. patent application number 14/480004 was filed with the patent office on 2015-05-14 for bacterial toxin vaccine.
This patent application is currently assigned to IDEMITSU KOSAN CO., LTD.. The applicant listed for this patent is IDEMITSU KOSAN CO., LTD., NATIONAL UNIVERSITY CORPORATION NARA INSTITUTE OF SCIENCE AND TECHNOLOGY. Invention is credited to Takeshi Matsui, Kazutoshi SAWADA, Kazuya Yoshida.
Application Number | 20150133635 14/480004 |
Document ID | / |
Family ID | 41255098 |
Filed Date | 2015-05-14 |
United States Patent
Application |
20150133635 |
Kind Code |
A1 |
SAWADA; Kazutoshi ; et
al. |
May 14, 2015 |
BACTERIAL TOXIN VACCINE
Abstract
A bacterial toxin protein such as a Shiga toxin protein is
efficiently produced using plant cells. The plant cells are
transformed using a DNA construct containing DNA encoding a hybrid
protein in which the bacterial toxin proteins such as the Shiga
toxin proteins are tandemly linked through a peptide having the
following characteristics (A) and (B) to produce the bacterial
toxin protein in the plant cells: (A) a number of amino acids is 12
to 30; and (B) a content of proline is 20 to 35%.
Inventors: |
SAWADA; Kazutoshi;
(Sodegaura-shi, JP) ; Yoshida; Kazuya; (Ikoma-shi,
JP) ; Matsui; Takeshi; (Ikoma-shi, JP) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
IDEMITSU KOSAN CO., LTD.
NATIONAL UNIVERSITY CORPORATION NARA INSTITUTE OF SCIENCE AND
TECHNOLOGY |
Chiyoda-ku
Ikoma-shi |
|
JP
JP |
|
|
Assignee: |
IDEMITSU KOSAN CO., LTD.
Chiyoda-ku
JP
NATIONAL UNIVERSITY CORPORATION NARA INSTITUTE OF SCIENCE AND
TECHNOLOGY
Ikoma-shi
JP
|
Family ID: |
41255098 |
Appl. No.: |
14/480004 |
Filed: |
September 8, 2014 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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12990597 |
Nov 1, 2010 |
8846052 |
|
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PCT/JP09/58345 |
Apr 28, 2009 |
|
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14480004 |
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Current U.S.
Class: |
530/350 ;
435/320.1; 435/419; 800/298 |
Current CPC
Class: |
A61K 39/00 20130101;
C12N 15/8258 20130101; Y02A 50/474 20180101; A61P 31/04 20180101;
A61K 39/0258 20130101; C07K 2319/55 20130101; C07K 14/28 20130101;
C07K 2319/00 20130101; C07K 14/245 20130101; A61K 2039/517
20130101; C07K 14/25 20130101; Y02A 50/30 20180101 |
Class at
Publication: |
530/350 ;
435/320.1; 435/419; 800/298 |
International
Class: |
C07K 14/245 20060101
C07K014/245; C07K 14/28 20060101 C07K014/28 |
Foreign Application Data
Date |
Code |
Application Number |
May 2, 2008 |
JP |
2008-120573 |
Claims
1-24. (canceled)
25. A hybrid protein comprising two or three toxin proteins
selected from the group consisting of Shiga toxin protein (Stx),
cholera toxin protein (CT) and Escherichia coli heat-labile toxin
protein (LT), wherein said toxin proteins are tandemly linked
through a peptide having the following characteristics (A) to (D):
(A) a number of amino acids is 12 to 30; and (B) a content of
proline is 20 to 35%, (C) proline is allocated with an interval of
two or three amino acids, (D) the total content of serine and
glycine in the amino acids other than proline is 70% or more.
26. The hybrid protein according to claim 25, wherein said peptide
further has the following characteristics (D): (D) the total
content of serine and glycine in the amino acids other than proline
is 80% or more.
27. The hybrid protein according to claim 25, wherein Shiga toxin
protein (Stx) or cholera toxin protein (CT) is tandemly linked to
Escherichia coli heat-labile toxin protein (LT) through said
peptide.
28. The hybrid protein according to claim 25, wherein said peptide
further has the following characteristics (E): (E) the total
content of alanine, methionine and glutamic acid in the amino acids
other than proline is 10% or less.
29. The hybrid protein according to claim 25, wherein said peptide
further has the following characteristics (F): (F) the total
content of tryptophan, leucine, isoleucine, tyrosine, phenylalanine
and valine in the amino acids other than proline is 5% or less.
30. The hybrid protein according to claim 25, wherein said peptide
further has the following characteristics (G): (G) the total
content of serine, glycine and asparagine in the amino acids other
than proline is 90% or more.
31. The hybrid protein according to claim 25, wherein the Shiga
toxin proteins are Stx2e protein B subunits, and the cholera toxin
proteins are cholera toxin protein B subunits.
32. A DNA construct comprising DNA encoding the hybrid protein
according in claim 25.
33. The DNA construct according to claim 32, wherein DNA encoding
the hybrid protein is operably-linked to a 5'-untranslated region
of an alcohol dehydrogenase gene derived from a plant.
34. The DNA construct according to claim 33, wherein said plant is
Nicotiana tabacum.
35. A recombinant vector comprising the DNA construct according to
claim 32.
36. A transformant transformed with the recombinant vector
according to claim 35.
37. The transformant according to claim 36, wherein the
transformant is a transformed plant cell or a transformed
plant.
38. A seed, which is obtained from the transformant according to
claim 36.
39. A hybrid protein comprising: (a) two or three toxin proteins
selected from the group consisting of Shiga toxin proteins, cholera
toxin proteins, Escherichia coli heat-labile toxin proteins and
combinations thereof, and (b) a peptide having an amino acid
sequence which has at least 60% identity to the amino acid sequence
represented by SEQ ID NO: 2, 82, or 84 and which is tandemly linked
to the C-terminus of each of the toxin proteins, wherein said
hybrid protein causes an immune response when administered to an
animal.
40. The hybrid protein according to claim 39, wherein said peptide
has an amino acid sequence which has at least 70% identity to the
amino acid sequence represented by SEQ ID NO: 2, 82, or 84.
41. The hybrid protein according to claim 39, wherein said peptide
has an amino acid sequence which has at least 80% identity to the
amino acid sequence represented by SEQ ID NO: 2, 82, or 84.
42. A peptide having an amino acid sequence which has at least 70%
identity to the amino acid sequence represented by SEQ ID NO: 2,
82, or 84.
43. The peptide according to claim 42, wherein said peptide has at
least 80% identity to the amino acid sequence represented by SEQ ID
NO: 2, 82, or 84.
44. The peptide according to claim 42, wherein said peptide has at
least 90% identity to the amino acid sequence represented by SEQ ID
NO: 2, 82, or 84.
45. A hybrid protein comprising one toxin protein selected from the
group consisting of Shiga toxin protein (Stx), cholera toxin
protein (CT) and Escherichia coli heat-labile toxin protein (LT),
wherein said toxin protein is linked with a peptide having the
following characteristics (A) to (D): (A) a number of amino acids
is 12 to 30; and (B) a content of proline is 20 to 35%. (C) proline
is allocated with an interval of two or three amino acids. (D) the
total content of serine and glycine in the amino acids other than
proline is 70% or more.
46. A hybrid protein comprising: (a) one toxin protein selected
from the group consisting of Shiga toxin protein (Stx), cholera
toxin protein (CT) and Escherichia coli heat-labile toxin protein
(LT) and combinations thereof, and (b) a peptide having the amino
acid sequence represented by SEQ ID NO:2, 82, 84 or an amino acid
sequence which has at least 80% identity to the amino acid sequence
represented by SEQ ID NO:2, 82, 84 and which is linked with the
toxin protein, wherein said hybrid protein cause an immune response
when administered to an animal.
47. A hybrid protein comprising: (a) two Shiga toxin proteins, and
(b) a peptide having an amino acid sequence which has at least 70%
identity to the amino acid sequence represented by SEQ ID NO: 2,
82, or 84 and which links said two Shiga toxin proteins, wherein
said hybrid protein causes an immune response when administered to
an animal.
48. The hybrid protein according to claim 47, wherein said peptide
has an amino acid sequence which has at least 80% identity to the
amino acid sequence represented by SEQ ID NO: 2, 82, or 84.
49. The hybrid protein according to claim 47, wherein said peptide
has an amino acid sequence which has at least 90% identity to the
amino acid sequence represented by SEQ ID NO: 2, 82, or 84.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application is a Continuation of U.S. application Ser.
No. 12/990,597, filed, Nov. 1, 2010, which is a 35 U.S.C. .sctn.371
National Stage patent application of International patent
application PCT/JP2009/058345, filed on Apr. 28, 2009, which claims
priority to Japanese patent application JP 2008-120573, filed on
May 2, 2008.
TECHNICAL FIELD
[0002] The present invention relates to a hybrid protein used for
vaccines for diseases caused by bacterial toxins such as Shiga
toxins, cholera toxins, and Escherichia coli heat-labile toxins,
and a DNA construct for producing the hybrid protein.
BACKGROUND ART
[0003] Shiga toxins (Stxs, verotoxins) are proteinous exotoxins
produced by enterohemorrhagic Escherichia coli of pathogenic
Escherichia coli species. The Shiga toxins cause hemorrhagic
enteritis, hemolytic uremic syndrome, encephalopathy, and the
like.
[0004] The Shiga toxins are broadly classified into Stx1 and Stx2,
each of which is further classified into subclasses. An example of
the Stx2 includes Stx2e which causes swine edema disease. The swine
edema disease is known to frequently occur in baby pigs one to two
weeks after weaning. A fatality due to infection with edema disease
bacteria is 50 to 90%, which is extremely high.
[0005] Further, cholera toxins (CTs) are proteinous exotoxins
produced by Vibrio cholerae. The CTs are known to cause severe
diarrhea and emesis.
[0006] Still further, Escherichia coli heat-labile toxins (LTs) are
proteinous endotoxins produced by enterotoxigenic Escherichia coli.
The LTs are known to cause diarrhea and emesis.
[0007] The bacterial toxins, Stxs, LTs, and CTs are all known to
include a B-subunit pentamer involved in adhesion to cells and an
A-subunit monomer having a toxicity. The LTs and the CTs are also
known to be similar structurally and functionally.
[0008] As a method of preventing the diseases caused by those
bacterial toxins, methods of administering a vaccine by an
injection or a nasal spray and administering the vaccine orally are
known.
[0009] For example, a technology where an attenuated Stx2e protein
is produced using recombinant Escherichia coli and administered to
pigs by an injection is known (Non-patent Document 1). However, for
example, an amount of the attenuated Stx2e protein produced by the
recombinant Escherichia coli is not sufficient and the
administration of the vaccine by an injection requires human labor.
This has been a problem.
[0010] Further, the method of administering the vaccine orally
draws increasing attention in terms of reducing the labor in a
stockbreeding field. In such a context, a technology where the
bacterial toxin protein is produced by plants using a transgenic
technology has been being developed. For example, a transgenic
plant containing DNA encoding an LT protein B subunit (LTB) and
expressing the DNA has been described (Patent Documents 1 and 2). A
transgenic plant expressing DNA encoding the LT protein or the CT
protein has been also described (Patent Document 3). However, there
has been a problem that the amount of the produced protein is not
sufficient in those technologies. An example of producing the LTB
in Lactuca sativa has been reported (Non-patent Document 2). In
this study, a gene of the LT protein B subunit including modified
codons is expressed in Lactuca sativa using both a cauliflower
mosaic virus 35S RNA promoter (CaMV35S) which is a promoter
expressed highly in a plant and Kozak sequence which is an
enhancer. As a result, it has been reported that the LT protein B
subunit is accumulated in an amount of about 2.0% by mass of a
total soluble protein of Lactuca sativa. However, this extent of
the accumulated protein is thought to be insufficient to
efficiently prevent a bacterial disease by utilizing the transgenic
plant. That is, it is necessary to efficiently produce and
accumulate the target bacterial toxin protein in plant cells.
[0011] The inventors of the present invention found that the Stx2e
protein could be produced efficiently in a plant such as Lactuca
sativa and accumulated at a high concentration in a plant body by
expressing the Stx2e protein where a secretory signal peptide
derived from a plant had been added to its amino terminus, using a
5'-untranslated region (ADH 5'-UTR) of an alcohol dehydrogenase
gene derived from a plant, and filed the patent (Patent Document
4). [0012] [Patent Document 1] JP 10-507916 A [0013] [Patent
Document 2] JP 2000-166411 A [0014] [Patent Document 3] JP
2002-533068 A [0015] [Patent Document 4] WO 2009/004842 A1 [0016]
[Non-patent Document 1] Makino et al., Microbial Pathogenesis,
Volume 31, Number 1, July 2001, pp. 1-8(08) [0017] [Non-patent
Document 2] Kim et al., Protein Expression and Purification, Volume
51, Number 1, January 2006, pp. 22-27(06)
SUMMARY OF INVENTION
[0018] It is an object of the present invention to more efficiently
produce a Stx protein and other bacterial toxin proteins having a
conformation similar thereto using plant cells.
[0019] Through production of a hybrid protein in which two or three
bacterial toxin proteins such as Stx2e and CT are tandemly linked
through a peptide having a particular sequence in plant cells, the
inventors of the present invention have succeeded in accumulating
the bacterial toxin protein at a high concentration in the plant
cells and completed the present invention.
[0020] The present invention is as follows.
(1) a hybrid protein, in which two or three of Shiga toxin
proteins, cholera toxin proteins, or Escherichia coli heat-labile
toxin proteins are each tandemly linked through a peptide having
the following characteristics (A) and (B):
[0021] (A) the number of amino acids is 12 to 30; and
[0022] (B) the content of proline is 20 to 35%;
(2) the hybrid protein according to Item (1), in which the peptide
further has the following characteristic (C):
[0023] (C) proline is allocated every two or three amino acids;
(3) the hybrid protein according to Item (2), in which the peptide
has an amino acid sequence represented by SEQ ID NO: 2, 82, or 84;
(4) the hybrid protein according to Item (3), in which two of the
Shiga toxin proteins, cholera toxin proteins, or Escherichia coli
heat-labile toxin proteins are tandemly linked through the peptide
having the amino acid sequence represented by SEQ ID NO: 2; (5) the
hybrid protein according to any one of Items (1) to (4), in which
the Shiga toxin proteins are Shiga toxin protein B subunits; (6)
the hybrid protein according to any one of Items (1) to (5), in
which the Shiga toxin proteins are Stx2e proteins; (7) the hybrid
protein according to any one of Items (1) to (4), in which the
cholera toxin proteins are cholera toxin protein B subunits; (8)
the hybrid protein according to Item (4), including an amino acid
sequence represented by SEQ ID NO: 10, 12, 14, or 16; (9) the
hybrid protein according to Item (3), including an amino acid
sequence represented by SEQ ID NO: 86, 88, 90, 92, 94, 96, 98, or
100; (10) the hybrid protein according to any one of Items (1) to
(9), in which a secretory signal peptide derived from a plant is
added to its amino terminus; (11) the hybrid protein according to
Item (10), in which an endoplasmic reticulum retention signal
peptide is added to its carboxyl terminus; (12) the hybrid protein
according to any one of Items (1) to (9), in which a chloroplast
transit signal peptide is added to its amino terminus; (13) a DNA
construct, including DNA encoding the hybrid protein according to
any one of Items (1) to (12); (14) the DNA construct according to
Item (13), including DNA having a base sequence represented by SEQ
ID NO: 9, 11, 13, or 15; (15) the DNA construct according to Item
(13), including DNA having a base sequence represented by SEQ ID
NO: 85, 87, 89, 91, 93, 95, 97, or 99; (16) the DNA construct
according to any one of Items (13) to (15), in which DNA encoding a
hybrid protein is operably-linked to a 5'-untranslated region of an
alcohol dehydrogenase gene derived from a plant; (17) the DNA
construct according to Item (16), in which the 5'-untranslated
region of the alcohol dehydrogenase gene derived from the plant is
derived from Nicotiana tabacum; (18) a DNA construct according to
Item (17), including a base sequence represented by any one of SEQ
ID NOS: 24 to 29; (19) a DNA construct according to Item (17),
including a base sequence represented by any one of SEQ ID NOS: 101
to 111; (20) a recombinant vector, including the DNA construct
according to any one of Items (13) to (19); (21) a transformant
transformed with the recombinant vector according to Item (20);
(22) a transformant according to Item (21), in which the
transformant is a transformed plant cell or a transformed plant;
(23) a seed, which is obtained from the transformant according to
Item (21) or (22); and (24) a peptide, having an amino acid
sequence represented by SEQ ID NO: 2, 82, or 84.
BRIEF DESCRIPTION OF DRAWINGS
[0024] In the accompanying drawings:
[0025] FIG. 1 is a view illustrating a design of Stx2eB expression
vectors, in which an arrow denotes a translation initiation site,
and an inverted triangle denotes a site to be cleaved after the
translation (Figure discloses `HDEL` as SEQ ID NO: 20);
[0026] FIG. 2 is a photograph illustrating levels of accumulated
Stx2eB obtained in a transient expression experiment using Lactuca
sativa protoplasts;
[0027] FIG. 3 is a photograph illustrating levels of accumulated
CTB obtained in a transient expression experiment using the Lactuca
sativa protoplasts;
[0028] FIG. 4 is a view illustrating a design of DNA constructs
encoding an Stx2eB-YFP fusion protein, in which an arrow denotes a
translation initiation site, and an inverted triangle denotes a
site to be cleaved after the translation (Figure discloses `HDEL`
as SEQ ID NO: 20);
[0029] FIG. 5 is a photograph illustrating localization of the
Stx2eB-YFP fusion protein obtained in a transient expression
experiment using cultured tobacco cell protoplasts;
[0030] FIG. 6 is a photograph illustrating localization of the
Stx2eB-YFP fusion protein obtained in a transient expression
experiment using the cultured tobacco cell protoplasts;
[0031] FIG. 7 is a photograph illustrating localization of
vacuole-type GFP and the Stx2eB-YFP fusion protein in co-expression
of ARF1pWT and ARF1pDN obtained in a transient expression
experiment using the cultured tobacco cell protoplasts;
[0032] FIG. 8 is a photograph illustrating the levels of
accumulated Stx2eB obtained in a transformation experiment using
cultured tobacco cells (BY2), in which a numeral in each lane
denotes a clone number;
[0033] FIG. 9 is a photograph illustrating the levels of
accumulated Stx2eB obtained in a transformation experiment using
the cultured tobacco cells (BY2), in which the numeral in each lane
denotes the clone number;
[0034] FIG. 10 is photographs illustrating the levels of
accumulated Stx2eB obtained in a transformation experiment using
the cultured Tobacco cells (BY2), in which the numeral in each lane
denotes the clone number;
[0035] FIG. 11 is a graph illustrating the levels of accumulated
Stx2eB obtained in a transformation experiment using the cultured
tobacco cells (BY2), in which each numeral denotes the clone
number;
[0036] FIG. 12 is a graph illustrating a relationship between mRNA
levels of Stx2eB and the levels of accumulated Stx2eB;
[0037] FIG. 13 is a view illustrating the design of DNA constructs
encoding Stx2eB, in which A, B, and C denote the designs of an
endoplasmic reticulum type, a cytoplasm type, and a chloroplast
type of the DNA constructs, respectively (Figure discloses `HDEL`
as SEQ ID NO: 20);
[0038] FIG. 14 is a view illustrating the design of DNA constructs
encoding CTB, in which A, B, and C denote the designs of an
endoplasmic reticulum type, a cytoplasm type and a chloroplast type
of the DNA constructs, respectively (Figure discloses `HDEL` as SEQ
ID NO: 20);
[0039] FIG. 15 is a photograph illustrating the levels of
accumulated Stx2eB obtained in a transient expression experiment
using the Lactuca sativa protoplasts;
[0040] FIG. 16 is a photograph illustrating the levels of
accumulated CTB obtained in a transient expression experiment using
the Lactuca sativa protoplasts;
[0041] FIG. 17 is photographs illustrating the levels of
accumulated Stx2eB obtained in a transformation experiment using
the cultured tobacco cells (BY2), in which the numeral in each lane
denotes the clone number;
[0042] FIG. 18 is photographs illustrating the levels of
accumulated Stx2eB obtained in a transformation experiment using a
tobacco plant body, in which the numeral in each lane denotes the
clone number;
[0043] FIG. 19 is a photograph illustrating the levels of
accumulated Stx2eB obtained in a transformation experiment using
the tobacco plant body, in which the numeral in each lane denotes
the clone number;
[0044] FIG. 20 is a view illustrating the design of DNA constructs
encoding Stx2eB (Figure discloses `HDEL` as SEQ ID NO: 20);
[0045] FIG. 21 is a view illustrating the design of DNA constructs
encoding CTB (Figure discloses `HDEL` as SEQ ID NO: 20);
[0046] FIG. 22 is photographs illustrating the levels of
accumulated Stx2eB obtained in a transformation experiment using
the cultured tobacco cells (BY2); and
[0047] FIG. 23 is a photograph illustrating the levels of
accumulated CTB obtained in a transformation experiment using the
cultured tobacco cells (BY2).
DESCRIPTION OF EMBODIMENTS
[0048] In a hybrid protein of the present invention, two or three
of Shiga toxin (Stx) proteins, cholera toxin (CT) proteins, or
Escherichia coli heat-labile toxin (LT) proteins are each tandemly
linked through a peptide having the following characteristics (A)
and (B):
[0049] (A) the number of amino acids is 12 to 30; and
[0050] (B) the content of proline is 20 to 35%.
[0051] Shiga toxins (Stxs) are classified into type 1 (Stx1) and
type 2 (Stx2). The Stx1 is further classified into subclasses a to
d, and the Stx2 is further classified into subclasses a to g,
respectively. The Shiga toxin includes one A subunit which is a
toxin main body and five B subunits involved in invasion into
intestinal mucosa.
[0052] Of those, for example, Stx2e is known as a swine edema
disease toxin, and its A subunit (Stx2eA) is represented by an
amino acid sequence of SEQ ID NO: 4 and its B subunit (Stx2eB) is
represented by an amino acid sequence of SEQ ID NO: 6.
[0053] In Stx2eA and Stx2eB, one or several amino acids may be
substituted, deleted, inserted, or added in the amino acid
sequences represented by SEQ ID NO: 4 or 6 as long as they can
cause an immune response by administering to pigs. For example, the
term "several" means the number of preferably 2 to 30, more
preferably 2 to 20, and still more preferably 2 to 10, in Stx2eA,
and means the number of preferably 2 to 10, more preferably 2 to 5,
and still more preferably 2 to 3, in Stx2eB.
[0054] Further, Stx2eA and Stx2eB may be those having an identity
of preferably 85% or more, more preferably 90% or more, and still
more preferably 95% or more to the amino acid sequences represented
by SEQ ID NOS: 4 and 6, and being capable of causing the immune
response by administering to the pig.
[0055] The cholera toxin (CT) includes one A subunit (CTA) which is
the toxin main body and five B subunits (CTB) represented by SEQ ID
NO: 8 and involved in the invasion into intestinal mucosa.
[0056] In CTB, one or several amino acids may be substituted,
deleted, inserted, or added in the amino acid sequence represented
by SEQ ID NO: 8 as long as CTB can cause the immune response by
administering to animals. The term "several" means preferably 2 to
10, more preferably 2 to 5, and still more preferably 2 to 3.
[0057] Further, CTB may be those having an identity of preferably
85% or more, more preferably 90% or more, and still more preferably
95% or more to the amino acid sequences represented by SEQ ID NO:
8, and being capable of causing the immune response by
administering to the animals.
[0058] The Escherichia coli heat-labile toxin (LT) protein includes
one A subunit which is the toxin main body and five subunits
involved in the invasion into intestinal mucosa.
[0059] The Shiga toxin, the cholera toxin, and the Escherichia coli
heat-labile toxin are also collectively referred to as "bacterial
toxins" herein.
[0060] The number of the amino acids in the peptide is preferably
12 to 25 and more preferably 12 to 22. The content of proline in
the peptide is preferably 20 to 27% and more preferably 20 to
25%.
[0061] Further, proline is allocated preferably every two or three
residues in the peptide. But, in this case, the amino acids other
than proline may be consecutive within 5 residues and preferably 4
residues in the terminus of the peptide.
[0062] In addition, the total content of serine, glycine, arginine,
lysine, threonine, glutamine, asparagine, histidine, and aspartic
acid in the amino acids other than proline is preferably 70% or
more, more preferably 80% or more, and still more preferably 90% or
more in the peptide. Further, the total content of serine, glycine,
and asparagine in the amino acids other than proline is preferably
70% or more, more preferably 80% or more, and still more preferably
90% or more in the peptide. Still further, the total content of
serine and glycine in the amino acids other than proline is
preferably 70% or more, more preferably 80% or more, and still more
preferably 90% or more in the peptide. This is because the peptide
containing those amino acids abundantly is hard to form a secondary
structure (.beta.-sheet structure and helix structure).
[0063] Meanwhile, the total content of alanine, methionine, and
glutamic acid in the amino acids other than proline is preferably
30% or less, more preferably 20% or less, and still more preferably
10% or less in the peptide. This is because the peptide containing
those amino acids abundantly easily forms the helix structure. The
total content of tryptophan, leucine, isoleucine, tyrosine,
phenylalanine, and valine in the amino acids other than proline is
preferably 20% or less, more preferably 10% or less, and still more
preferably 5% or less in the peptide. This is because the peptide
containing those amino acids abundantly easily forms the
.beta.-sheet structure and the helix structure.
[0064] The peptide is preferably selected from the peptide (PG12)
having the amino acid sequence represented by SEQ ID NO: 2, the
peptide (PG17) having the amino acid sequence represented by SEQ ID
NO: 82, and the peptide (PG22) having the amino acid sequence
represented by SEQ ID NO: 84.
[0065] In the hybrid protein of the present invention, two or three
hybrid proteins of the A subunit and the B subunit may be tandemly
linked through the above peptide, or two or three A subunits may be
tandemly linked through the peptide, or two or three B subunits may
be tandemly linked through the peptide. When the hybrid protein
contains the A subunit, the A subunit is preferably attenuated. In
the hybrid protein of the present invention, preferably two or
three B subunits are tandemly linked through the peptide. In the
hybrid protein of the present invention, preferably two B subunits
are tandemly linked through PG12.
[0066] Further, in the hybrid protein of the present invention, the
peptide is preferably added to its C terminus. PG12 is particularly
preferably added to its C terminus in the hybrid protein of the
present invention.
[0067] The hybrid protein of the present invention has the amino
acid sequence represented by SEQ ID NO: 10, 12, 14, 16, 86, 88, 90,
92, 94, 96, 98, or 100, for example. In the hybrid protein having
the amino acid sequence represented by SEQ ID NO: 10, two Stx2eBs
are tandemly linked through PG12. In the hybrid protein having the
amino acid sequence represented by SEQ ID NO: 12, two CTBs are
tandemly linked through PG12. In the hybrid protein having the
amino acid sequence represented by SEQ ID NO: 14, two Stx2eBs are
tandemly linked through PG12 and further PG12 is linked to the C
terminus thereof. In the hybrid protein having the amino acid
sequence represented by SEQ ID NO: 16, two CTBs are tandemly linked
through PG12 and further PG12 is linked to the C terminus thereof.
In the hybrid protein having the amino acid sequence represented by
SEQ ID NO: 86, three Stx2eBs are each tandemly linked through PG12.
In the hybrid protein having the amino acid sequence represented by
SEQ ID NO: 88, three Stx2eBs are each tandemly linked through PG12
and further PG12 is linked to the C terminus thereof. In the hybrid
protein having the amino acid sequence represented by SEQ ID NO:
90, two Stx2eBs are tandemly linked through PG17 and further PG12
is linked to the C terminus thereof. In the hybrid protein having
the amino acid sequence represented by SEQ ID NO: 92, two Stx2eBs
are tandemly linked through PG22 and further PG12 is linked to the
C terminus thereof. In the hybrid protein having the amino acid
sequence represented by SEQ ID NO: 94, three CTBs are each tandemly
linked through PG12. In the hybrid protein having the amino acid
sequence represented by SEQ ID NO: 96, three CTBs are each tandemly
linked through PG12 and further PG12 is linked to the C terminus
thereof. In the hybrid protein having the amino acid sequence
represented by SEQ ID NO: 98, two CTBs are tandemly linked through
PG17 and further PG12 is linked to the C terminus thereof. In the
hybrid protein having the amino acid sequence represented by SEQ ID
NO: 100, two CTBs are tandemly linked through PG22 and further PG12
is linked to the C terminus thereof.
[0068] By using the peptide such as PG12, PG17, or PG22 as a linker
for linking the bacterial toxin proteins, the level of the
bacterial toxin protein accumulated in the plant cell is
increased.
[0069] In the hybrid protein of the present invention, a secretory
signal peptide derived from a plant or a chloroplast transit signal
peptide is preferably added to its amino terminus. Here, the term
"addition" is a concept including both the case where the secretory
signal peptide is directly bound to the amino terminus of the two
or three bacterial toxin proteins linked through the peptide and
the case where the secretory signal peptide is bound thereto
through another peptide.
[0070] The secretory signal peptide is derived from preferably a
plant belonging to the family Solanaceae, Brassicaceae, or
Asteraceae, further preferably a plant belonging to the genus
Nicotiana, Arabidopsis, Lactuca, etc., and more preferably
Nicotiana tabacum or Arabidopsis thaliana, Lactuca sativa, etc.
[0071] Moreover, it is preferably derived from a .beta.-D-glucan
exohydrolase of Nicotiana tabacum or a 38-kDa peroxidase of
Nicotiana tabacum (GenBank ACCESSION D42064).
[0072] An example of the secretory signal peptide includes a
peptide that is derived from a .beta.-D-glucan exohydrolase of
Nicotiana tabacum and has the amino acid sequence represented by
SEQ ID NO: 18.
[0073] An example of the chloroplast transit signal peptide
includes a chloroplast transit signal peptide (transit peptide,
T.P., SEQ ID NO: 79) derived from Lactuca sativa Rbcs (Rubisco
small subunit) (GenBank ACCESSION D14001). A base sequence of DNA
which encodes the chloroplast transit signal peptide derived from
Lactuca sativa Rbcs is represented by SEQ ID NO: 80. Herein, the
hybrid protein including the chloroplast transit signal peptide
added to its amino terminus is also referred to as a
chloroplast-type (Chl) hybrid protein, and a DNA construct encoding
the chloroplast-type (Chl) hybrid protein is also referred to as a
chloroplast-type DNA construct. The chloroplast-type hybrid protein
is efficiently accumulated particularly in a plant whose
chloroplast is developed well such as Nicotiana tabacum.
[0074] The hybrid protein in which neither the secretory signal
peptide nor the chloroplast transit signal protein is added to its
amino terminus is referred to as a cytoplasm-type (Cyt) hybrid
protein, and the DNA construct encoding the cytoplasm-type hybrid
protein is referred to as a cytoplasmic-type DNA construct. In the
cytoplasm-type hybrid protein, particularly preferably three
bacterial toxin protein B subunits are tandemly linked through the
peptide.
[0075] In the hybrid protein of the present invention, the signal
peptide such as an endoplasmic reticulum retention signal peptide
and a vacuolar transport signal peptide may be added to its
carboxyl terminus. Here, the term "addition" is the concept
including both the case where the signal peptide is directly bound
to the carboxyl terminus of the hybrid protein and the case where
the signal peptide is bound thereto through another peptide.
Herein, the hybrid protein in which the secretory signal peptide is
added to its amino terminus and the endoplasmic reticulum retention
signal peptide is added to the carboxyl terminus is also referred
to as an endoplasmic reticulum-type (ER) hybrid protein, and the
DNA construct encoding the endoplasmic reticulum-type hybrid
protein is also referred to as an endoplasmic reticulum-type DNA
construct. The endoplasmic reticulum-type hybrid protein is
efficiently accumulated particularly in a plant such as Lactuca
sativa.
[0076] In the hybrid protein of the present invention, the
endoplasmic reticulum retention signal peptide is preferably added
to its carboxyl terminus. Examples of the endoplasmic reticulum
retention signal peptide include an endoplasmic reticulum retention
signal peptide including KDEL sequence (SEQ ID NO: 19), HDEL
sequence (SEQ ID NO: 20), KDEF sequence (SEQ ID NO: 21), or HDEF
sequence (SEQ ID NO: 22).
[0077] The vacuolar transport signal peptide is derived from
preferably a plant belonging to the family Solanaceae,
Brassicaceae, or Asteraceae, further preferably a plant belonging
to the genus Nicotiana, Arabidopsis, Armoracia, etc., and more
preferably Nicotiana tabacum, Arabidopsis thaliana, Armoracia
rusticana, etc. In addition, the peptide is preferably derived from
a chitinase. The amino acid sequence of a vacuolar transport signal
peptide derived from a tobacco chitinase is represented by SEQ ID
NO: 76. Meanwhile, the base sequence of DNA encoding a vacuolar
transport signal peptide derived from a tobacco chitinase is
represented by SEQ ID NO: 75, for example.
[0078] Moreover, the peptide is preferably derived from a
horseradish peroxidase C1a isozyme. The amino acid sequence of a
vacuolar transport signal peptide derived from a horseradish
peroxidase C1a isozyme is represented by SEQ ID NO: 78. Meanwhile,
the base sequence of DNA encoding a vacuolar transport signal
peptide derived from a horseradish peroxidase C1a isozyme is
represented by SEQ ID NO: 77, for example. Herein, the hybrid
protein in which the secretory signal peptide is added to its amino
terminus, and the vacuolar transport signal peptide is added to its
carboxyl terminus is also referred to as a vacuole-type (Vac)
hybrid protein, and a DNA construct encoding the vacuole-type
hybrid protein is also referred to as a vacuole-type DNA
construct.
[0079] The hybrid protein of the present invention may be
synthesized chemically, or may be produced by genetic engineering.
A method of producing by the genetic engineering is described
later.
[0080] The DNA construct of the present invention is characterized
by containing DNA encoding the hybrid protein of the present
invention.
[0081] That is, the DNA construct of the present invention includes
DNA in which DNAs encoding the two or three bacterial toxin
proteins are tandemly linked through DNA encoding the peptide. The
DNA encoding the peptide is represented by, for example, SEQ ID NO:
1 (PG12), SEQ ID NO: 81 (PG17), and SEQ ID NO: 83 (PG22). Examples
of the DNA encoding the bacterial toxin protein include DNA (SEQ ID
NO: 3) encoding Stx2eA, DNA (SEQ ID NO: 5) encoding Stx2eB, and DNA
(SEQ ID NO: 7) encoding CTB. The DNA encoding the peptide and the
DNA encoding the bacterial toxin protein are linked by matching
their reading frames except stop codons.
[0082] The DNA encoding the bacterial toxin protein can be obtained
by a common genetic engineering technique based on the base
sequence of SEQ ID NO: 3, 5, or 7, for example. Specifically, a
cDNA library is prepared from a bacterium which produces each
bacterial toxin according to a conventional method, and a desired
clone is selected using a probe prepared from the library based on
the base sequence. Alternatively, the DNA can also be synthesized
chemically based on the base sequence, or synthesized by PCR with
genomic DNA as a template using a 5'- and 3'-terminal base sequence
of the base sequence as primers, for example.
[0083] The DNA encoding the hybrid protein of the present invention
is represented by SEQ ID NO: 9, 11, 13, 15, 85, 87, 89, 91, 93, 95,
97, or 99.
[0084] In the DNA encoding the hybrid protein, preferably a codon
corresponding to an amino acid which composes the hybrid protein is
appropriately modified so that the amount of the translated hybrid
protein is increased depending on a host cell in which the hybrid
protein is produced.
[0085] As the method of modifying the codon, a method of Kang et
al. (2004) may serve as a reference, for example. And, the method
of selecting the codon frequently used in the host cell, the method
of selecting the codon in which the content of GC is high, or the
method of selecting the codon frequently used in house keeping
genes in the host cell is exemplified.
[0086] Further, the DNA encoding the hybrid protein may be DNA
which hybridizes with DNA having the base sequence of SEQ ID NO: 9,
11, 13, 15, 85, 87, 89, 91, 93, 95, 97, or 99 under a stringent
condition. The term "stringent condition" refers to the condition
where a so-called specific hybrid is formed whereas no non-specific
hybrid is formed. There is exemplified the condition where two DNAs
with high identity, e.g., two DNAs having the identity of
preferably 80% or more, more preferably 90% or more, and
particularly preferably 95% or more are hybridized with each other
whereas two DNAs with lower identity than that are not hybridized.
Further, there is exemplified the condition of 2.times.SSC (330 mM
NaCl, 30 mM citric acid) at 42.degree. C. and preferably
0.1.times.SSC (330 mM NaCl, 30 mM citric acid) at 60.degree. C.
[0087] In the DNA construct of the present invention, preferably
the DNA encoding the hybrid protein is operably-linked to an
enhancer. The term "operably" refers to the fact that the hybrid
protein is produced in host cells when a vector obtained by
inserting the DNA construct of the present invention into a vector
including a suitable promoter is introduced into suitable host
cells. In addition, the term "linked" refers to both a case where
two DNAs are directly linked and a case where two DNAs are linked
via another base sequence.
[0088] Examples of the enhancer include Kozak sequence and a
5'-untranslated region of an alcohol dehydrogenase gene derived
from a plant. Particularly preferably, the DNA encoding the hybrid
protein is operably-linked to the 5'-untranslated region of an
alcohol dehydrogenase gene derived from a plant.
[0089] The 5'-untranslated region of an alcohol dehydrogenase gene
refers to a region including a sequence between the base at the
transcription initiation site of a gene encoding an alcohol
dehydrogenase and the base before the translation initiation site
(ATG, methionine). The region has a function to increase a
translation level. The phrase "function to increase a translation
level" refers to a function to increase an amount of a protein
produced by translation when the information encoded in a
structural gene is transcribed and then translated to produce a
protein. The region may be derived from a plant, and it is
preferably derived from a plant belonging to the family Solanaceae,
Brassicaceae, or Asteraceae, further preferably derived from a
plant belonging to the genus Nicotiana, Arabidopsis, Lactuca, etc.,
and more preferably derived from Nicotiana tabacum, Arabidopsis
thaliana, Lactuca sativa, etc.
[0090] The 5'-untranslated region of an alcohol dehydrogenase gene
is particularly preferably a region including the base sequence
represented by SEQ ID NO: 23, which is the 5'-untranslated region
of an alcohol dehydrogenase gene (NtADH 5'-UTR) derived from
Nicotiana tabacum, for example.
[0091] The 5'-untranslated region of an alcohol dehydrogenase gene
derived from a plant can be isolated from an alcohol dehydrogenase
gene of a plant cultured cell where an alcohol dehydrogenase is
highly expressed, for example (see JP 2003-79372 A). Meanwhile, in
the case of a region having a determined base sequence, such as the
5'-untranslated region of an alcohol dehydrogenase gene derived
from Nicotiana tabacum, the region can also be synthesized by
chemical synthesis, PCR using a genomic DNA as a template and using
the base sequences of the 5'- and 3'-termini of the region as
primers, or the like. In addition, if a part of the region having a
determined base sequence is used as a probe, the 5'-untranslated
region of an alcohol dehydrogenase gene derived from another plant
can be searched and isolated.
[0092] The 5'-untranslated region of an alcohol dehydrogenase gene
represented by the base sequence of SEQ ID NO: 23 may have
substitution, deletion, insertion, or addition of one or several
bases as long as the region has a function to increase a
translation level. The term "several" means the number of
preferably 2 to 10, further preferably 2 to 5, and particularly
preferably 2 to 3.
[0093] In addition, DNA having an identity of preferably 85% or
more and particularly preferably 90% or more to the 5'-untranslated
region of an alcohol dehydrogenase gene and having an ability to
increase a translation level may be used.
[0094] Whether the region has an intended function to increase a
translation level or not can be confirmed by, for example, a
transient assay using a GUS (.beta.-glucuronidase) gene or a
luciferase gene as a reporter gene in tobacco cultured cells, or an
assay in transformed cells engineered to carry those genes in a
chromosome.
[0095] The DNA construct of the present invention has the base
sequence represented by any one of SEQ ID NOS: 24 to 29 and SEQ ID
NOS: 101 to 111, for example.
[0096] The DNA construct having the base sequence represented by
SEQ ID NO: 24 is the DNA construct in which DNA (SEQ ID NO: 9)
encoding the hybrid protein in which two Stx2eB proteins are
tandemly linked through PG12 is linked to the 5'-untranslated
region (NtADH 5'-UTR, SEQ ID NO: 23) of an alcohol dehydrogenase
gene derived from Nicotiana tabacum. Further, the DNA construct
having the base sequence represented by SEQ ID NO: 25 is the DNA
construct in which DNA (SEQ ID NO: 11) encoding the hybrid protein
in which two CTB proteins are tandemly linked through PG12 is
linked to NtADH 5'-UTR.
[0097] The DNA construct having the base sequence represented by
SEQ ID NO: 26 is the DNA construct in which DNA encoding the hybrid
protein in which two Stx2eB proteins are tandemly linked through
PG12, the secretory signal peptide is added to its amino terminus,
and the endoplasmic reticulum retention signal peptide is added to
its carboxyl terminus is linked to NtADH 5'-UTR. Further, the DNA
construct having the base sequence represented by SEQ ID NO: 27 is
the DNA construct in which DNA encoding the hybrid protein in which
two CTB proteins are tandemly linked through PG12, the secretory
signal peptide is added to its amino terminus, and the endoplasmic
reticulum retention signal peptide is added to its carboxyl
terminus is linked to NtADH 5'-UTR.
[0098] The DNA construct having the base sequence represented by
SEQ ID NO: 28 is the DNA construct in which DNA encoding the hybrid
protein in which two Stx2eB proteins are tandemly linked through
PG12, the secretory signal peptide is added to its amino terminus,
PG12 is linked to its carboxyl terminus, and further the
endoplasmic reticulum retention signal peptide is added to its
carboxyl terminus is linked to NtADH 5'-UTR. Further, the DNA
construct having the base sequence represented by SEQ ID NO: 29 is
the DNA construct in which DNA encoding the hybrid protein in which
two CTB proteins are tandemly linked through PG12, the secretory
signal peptide is added to its amino terminus, PG12 is linked to
its carboxyl terminus, and further the endoplasmic reticulum
retention signal peptide is added to its carboxyl terminus is
linked to NtADH 5'-UTR.
[0099] The DNA construct having the base sequence represented by
SEQ ID NO: 101 is the DNA construct in which DNA encoding the
hybrid protein in which two Stx2eB proteins are tandemly linked
through PG12 and PG12 is linked to its carboxyl terminus is linked
to NtADH 5'-UTR.
[0100] The DNA construct having the base sequence represented by
SEQ ID NO: 102 is the DNA construct in which DNA encoding the
hybrid protein in which two Stx2eB proteins are tandemly linked
through PG17 to NtADH 5'-UTR, the secretory signal peptide is added
to its amino terminus, PG12 is linked to its carboxyl terminus, and
further the endoplasmic reticulum retention signal peptide is added
to its carboxyl terminus is linked to NtADH 5'-UTR. Further, the
DNA construct having the base sequence represented by SEQ ID NO:
103 is the DNA construct in which DNA encoding the hybrid protein
in which two Stx2eB proteins are tandemly linked through PG22, the
secretory signal peptide is added to its amino terminus, PG12 is
linked to its carboxyl terminus, and further the endoplasmic
reticulum retention signal peptide is added to its carboxyl
terminus is linked to NtADH 5'-UTR.
[0101] The DNA construct having the base sequence represented by
SEQ ID NO: 104 is the DNA construct in which DNA encoding the
hybrid protein in which two Stx2eB proteins are tandemly linked
through PG12, the chloroplast transit signal peptide is added to
its amino terminus, and PG12 is linked to its carboxyl terminus is
linked to NtADH 5'-UTR.
[0102] The DNA construct having the base sequence represented by
SEQ ID NO: 105 is the DNA construct in which DNA encoding the
hybrid protein in which three Stx2eB proteins are each tandemly
linked through PG12 and PG12 is linked to its carboxyl terminus is
linked to NtADH 5'-UTR.
[0103] The DNA construct having the base sequence represented by
SEQ ID NO: 106 is the DNA construct in which DNA encoding the
hybrid protein in which three Stx2eB proteins are each tandemly
linked through PG12, the secretory signal peptide is added to its
amino terminus, and PG12 is linked to its carboxyl terminus, and
further the endoplasmic reticulum retention signal peptide is added
to its carboxyl terminus is linked to NtADH 5'-UTR.
[0104] The DNA construct having the base sequence represented by
SEQ ID NO: 107 is the DNA construct in which DNA encoding the
hybrid protein in which three Stx2eB proteins are each tandemly
linked through PG12, the chloroplast transit signal peptide is
added to its amino terminus, and PG12 is linked to its carboxyl
terminus is linked to NtADH 5'-UTR.
[0105] The DNA construct having the base sequence represented by
SEQ ID NO: 108 is the DNA construct in which DNA encoding the
hybrid protein in which two CTB proteins are tandemly linked
through PG12 and PG12 is linked to its carboxyl terminus is linked
to NtADH 5'-UTR.
[0106] The DNA construct having the base sequence represented by
SEQ ID NO: 109 is the DNA construct in which DNA encoding the
hybrid protein in which two CTB proteins are tandemly linked
through PG17, the signal peptide is added to its amino terminus,
PG12 is linked to its carboxyl terminus, and further the
endoplasmic reticulum retention signal peptide is added to the its
carboxyl terminus is linked to NtADH 5'-UTR. Further, the DNA
construct having the base sequence represented by SEQ ID NO: 110 is
the DNA construct in which DNA encoding the hybrid protein in which
two CTB proteins are tandemly linked through PG22, the signal
peptide is added to its amino terminus, PG12 is linked to its
carboxyl terminus, and further the endoplasmic reticulum retention
signal peptide is added to the its carboxyl terminus is linked to
NtADH 5'-UTR.
[0107] The DNA construct having the base sequence represented by
SEQ ID NO: 111 is the DNA construct in which DNA encoding the
hybrid protein in which two CTB proteins are tandemly linked
through PG12, the chloroplast transit signal peptide is added to
its amino terminus, and PG12 is linked to its carboxyl terminus is
linked to NtADH 5'-UTR.
[0108] The DNA construct of the present invention can be prepared
by a general genetic engineering technique, which includes the
following procedures: digesting DNAs including the 5'-untranslated
region of an alcohol dehydrogenase gene derived from a plant, a DNA
encoding a secretory signal peptide derived from a plant, a DNA
encoding a chloroplast transit signal peptide, a DNA encoding a
bacterial toxin protein, and a DNA encoding an endoplasmic
reticulum retention signal peptide with suitable restriction
enzymes; and ligating the resultant fragments with a suitable
ligase.
[0109] The recombinant vector of the present invention is
characterized by including the DNA construct of the present
invention. The recombinant vector of the present invention may be a
vector obtained by inserting a DNA encoding a hybrid protein of the
present invention into a vector so that the DNA can be expressed in
host cells to be introduced with the vector. The vector is not
particularly limited as long as it can replicate in host cells, and
examples thereof include a plasmid DNA and a viral DNA. In
addition, the vector preferably includes a selective marker such as
a drug resistance gene. The plasmid DNA can be prepared from
Escherichia coli or Agrobacterium by the alkaline extraction method
(Birnboim, H. C. & Doly, J. (1979) Nucleic acid Res 7: 1513) or
a modified method thereof. Commercially available plasmids such as
pBI221, pBI121, pBI101, and pIG121Hm may be used. The viral DNA may
be, for example, pTB2 (Donson et al., 1991) (see Donson J., Kerney
C M., Hilf M E., Dawson W O. Systemic expression of a bacterial
gene by a tabacco mosaic virus-based vector. Proc. Natl. Acad. Sci.
(1991) 88: 7204-7208).
[0110] Promoters to be used in vectors may be appropriately
selected depending on host cells to be introduced with vectors. The
promoters are preferably a cauliflower mosaic virus 35S promoter
(Odell et al., 1985, Nature 313:810), a rice actin promoter (Zhang
et al. 1991 Plant Cell 3:1155), a corn ubiquitin promoter (Cornejo
et al., 1993, Plant Mol. Biol., 23:567), etc. for example.
Meanwhile, terminators to be used in vectors may be appropriately
selected depending on host cells to be introduced with vectors. The
terminators are preferably a nopaline synthase gene transcription
terminator, a cauliflower mosaic virus 35S terminator, etc.
[0111] The recombinant vector of the present invention may be
prepared as follows.
[0112] First, a DNA construct of the present invention is digested
with a suitable restriction enzyme, or a restriction enzyme site is
added to the DNA construct by PCR. Subsequently, the DNA construct
is inserted into the restriction enzyme site or multicloning site
of a vector.
[0113] The transformant of the present invention is characterized
by being transformed with the recombinant vector of the present
invention. The host cells to be used for transformation may be
eukaryotic cells or prokaryotic cells.
[0114] The eukaryotic cells are preferably plant cells,
particularly preferably cells of plants belonging to the family
Asteraceae, Solanaceae, Brassicaceae, and Chenopodiaceae. Moreover,
the eukaryotic cells are preferably cells of plants belonging to
the genus Lactuca, particularly preferably Lactuca sativa cells. In
the case of using Lactuca sativa cells as host cells, a cauliflower
mosaic virus 35S RNA promoter or the like may be used in the
vector.
[0115] The prokaryotic cells may be cells of Escherichia coli,
Agrobacterium tumefaciens, etc.
[0116] The transformant of the present invention can be prepared by
a general genetic engineering technique by introducing a vector of
the present invention into host cells. For example, the
transformant can be prepared by the introduction method using
Agrobacterium (Hood, et al., 1993, Transgenic, Res. 2:218, Hiei, et
al., 1994 Plant J. 6:271), an electroporation method (Tada, et al.,
1990, Theor. Appl. Genet, 80:475), a polyethylene glycol method
(Lazzeri, et al., 1991, Theor. Appl. Genet. 81:437), a particle gun
method (Sanford, et al., 1987, J. Part. Sci. tech. 5:27), a
polycation method (Ohtsuki), etc.
[0117] After introduction of the vector of the present invention
into host cells, a transformant of the present invention can be
selected based on the phenotype of a selective marker. If the
selected transformant is cultured, the bacterial toxin protein can
be produced. The culture medium and conditions for culture may be
suitably selected depending on the type of a transformant.
[0118] In addition, in the case of using a plant cell as a host
cell, culture of selected plant cell in accordance with a
conventional method can regenerate a plant and accumulate the
bacterial toxin protein in the plant cells or outside the cell
membranes of the plant cells. The method depends on the type of the
plant cell, and examples thereof include the method of Visser et
al. (Theor. Appl. Genet, 78:594(1989)) for potato and the method of
Nagata and Takebe (Planta, 99:12(1971)) for Nicotiana tabacum.
[0119] In the case of Lactuca sativa, a shoot can be regenerated in
MS medium containing 0.1 mg/l NAA (naphthalene acetic acid), 0.05
mg/l BA (benzyladenine), and 0.5 g/l polyvinylpyrrolidone, and
culture of the regenerated shoot in a 1/2 MS medium containing 0.5
g/l polyvinylpyrrolidone may cause rooting.
[0120] The seed of the present invention can be obtained by
collecting a seed from a plant regenerated as above. If the seed of
the present invention are sown and cultivated by a suitable method,
a plant capable of producing a bacterial toxin protein can be
obtained and is included in the transformant of the present
invention.
Examples
<1> Transient Expression Experiment
(1) Construction of Stx2eB Transient Expression Vector
[0121] A vector containing a DNA construct in which DNA (SEQ ID NO:
5) encoding an Stx2e protein B subunit (Stx2eB) was linked to a
5'-untranslated region (NtADH 5'-UTR) of a tobacco alcohol
dehydrogenase gene was prepared as follows.
[0122] A design of the vector is shown in FIG. 1.
[0123] 1.times.Stx2eB (PG12) denotes a DNA construct containing DNA
in which DNA encoding PG12 is linked to DNA encoding Stx2eB.
2.times.Stx2eB (PG12) denotes a DNA construct containing DNA in
which two DNAs encoding Stx2eB are linked using DNA encoding PG12
as a spacer.
[0124] In addition, a DNA construct, 3.times.Stx2eB (PG12) in which
three DNAs encoding Stx2eB are linked using DNA encoding PG12 as a
spacer, and a DNA construct, 4.times.Stx2eB (PG12) in which four
DNAs encoding Stx2eB are linked using DNA encoding PG12 as a spacer
were prepared as well.
[0125] Specific techniques are shown below.
[0126] PCR using a Kozak-stx2eb-F primer (SEQ ID NO: 30) and an
stx2eb-R primer (SEQ ID NO: 31) was performed to amplify a DNA
fragment encoding a mature region (except for a secretory signal
peptide to periplasm, Ala 19 to Asn 87) of Stx2eB. The resulting
DNA fragment was cloned into an EcoRV gap in pBluescript II SK. The
resulting plasmid was cleaved with HindIII, and treated with T4 DNA
polymerase, followed by self-ligation to convert a HindIII site to
a NheI site (plasmid 1).
[0127] Stx2eB was inserted as follows into the multicloning site
(MCS) of a transient expression vector in plant cells, pBI221
(Clontech).
[0128] In order to introduce SalI, KpnI, and SmaI sites into the
MCS, SalKpnSma-F (SEQ ID NO: 32) and SalKpnSma-R (SEQ ID NO: 33)
were annealed and phosphorylated with T4 polynucleotide kinase (T4
PNK) (TaKaRa) and inserted into the SacI gap of pBI221 (plasmid 2).
Stx2eB was cleaved out from plasmid 1 using XbaI and KpnI to insert
into plasmid 2, and the resultant product was arranged between a
cauliflower mosaic virus 35S RNA promoter (35S pro.) and a nopaline
synthase gene transcription terminator (NOS-T) (plasmid 3).
[0129] The 5'-untranslated region (NtADH 5'-UTR, SEQ ID NO: 23) of
a tobacco alcohol dehydrogenase gene was amplified by PCR with
ADH-221 (Sato et al., 2004, (see below)) as a template using ADH
XbaI-F primer (SEQ ID NO: 34) and ADH NsiI-R primer (SEQ ID NO:
35). A DNA region (SEQ ID NO: 17) encoding a secretory signal
peptide (SEQ ID NO: 18) of .beta.-D glucan exohydrolase (GenBank
ACCESSION AB017502) was amplified with a tobacco genomic DNA as a
template using .beta.D NsiI-F primer (SEQ ID NO: 36) and .beta.D
BamHI-R primer (SEQ ID NO: 37). The obtained respective DNA
fragments of NtADH 5'-UTR and the secretory signal peptide were
treated with NsiI (manufactured by Toyobo Co., Ltd.), ligated using
Ligation High (manufactured by Toyobo Co., Ltd.), followed by being
blunted, and cloned into the EcoRV gap in pBluescript II SK
(manufactured by Stratagene) (plasmid 4).
[0130] Satoh et al., The 5'-untranslated region of the tobacco
alcohol dehydrogenase gene functions as an effective translational
enhancer in plant. J. Biosci. Bioeng. (2004) 98, 1-8
[0131] Plasmid 4 was treated with NsiI, and blunted with T4 DNA
polymerase (manufactured by Toyobo Co., Ltd.), followed by
performing self-ligation to be ligated so that the initiation codon
(atg) of NtADH was matched to the initiation codon of the secretory
signal peptide (plasmid 5).
[0132] A DNA obtained by ligating an NtADH 5'-UTR fragment and a
secretory signal peptide was amplified using plasmid 5 as a
template and using ADH XbaI-F primer (SEQ ID NO: 34) and .beta.D
BamHI-R primer (SEQ ID NO: 35). The resultant DNA fragment was
treated with XbaI and BamHI and inserted into the XbaI-BamHI gap of
plasmid 3 (plasmid 6).
[0133] In order to add an endoplasmic reticulum retention signal
(SEQ ID NO: 38), an HDEL-F primer (SEQ ID NO: 39; `HDEL` disclosed
as SEQ ID NO: 20) and an HDEL-R primer (SEQ ID NO: 40; `HDEL`
disclosed as SEQ ID NO: 20) were annealed and phosphorylated with
T4 PNK, and the resultant product was inserted into the BglII gap
of plasmid 6, which had been dephosphorylated with alkaline
phosphatase (AP) (TakaRa) (plasmid 7).
[0134] An HA tag was added as a peptide tag for detecting Stx2eB.
In order to add the HA tag, an HA-F primer (SEQ ID NO: 41) and an
HA-R primer (SEQ ID NO: 42) were annealed and phosphorylated with
T4 PNK. The resultant phosphorylated HA fragment was inserted into
the BglII gap of plasmid 7 (plasmid 8).
[0135] A PG12 spacer (SEQ ID NO: 2) was inserted between Stx2eB and
the HA tag. A PG12-F primer (SEQ ID NO: 43) and a PG12-R primer
(SEQ ID NO: 44) were annealed and phosphorylated with T4 PNK. The
resulting phosphorylated DNA fragment was inserted into the BglII
gap of plasmid 8 (1.times.Stx2eB (PG12)).
[0136] 2.times.Stx2eB (PG12) was obtained by cleaving a 2eB-PG12
fragment out from 1.times.Stx2eB (PG12) with BamHI and BglII and
then inserting the fragment into the BamHI gap of the
1.times.Stx2eB (PG12). 3.times.Stx2eB (PG12) was obtained by
cleaving an Stx2eB-PG12 fragment out from 1.times.Stx2eB (PG12)
with BamHI and BglII and then inserting the fragment into the BamHI
gap of 2.times.Stx2eB (PG12). Further, 4.times.Stx2eB (PG12) was
obtained by cleaving a 2.times.(Stx2eB-PG12) fragment out from
2.times.Stx2eB (PG12) with BamHI and BglII and then inserting the
fragment into the BamHI gap of the 2.times.Stx2eB (PG12).
[0137] (2) Construction of CTB Transient Expression Vector
[0138] A vector containing a DNA construct (2.times.CTB (PG12)) in
which DNA encoding a CT protein B subunit (CTB) had been linked to
the 5'-untranslated region of a tobacco alcohol dehydrogenase gene
was prepared as follows.
[0139] A DNA fragment (SEQ ID NO: 7) encoding the mature region
(except for the secretory signal to the periplasm, Thr 22 to Asn
124) (SEQ ID NO: 8) of CTB was prepared. First, the following ten
primers were prepared.
[0140] CTB1: SEQ ID NO: 45
[0141] CTB2: SEQ ID NO: 46
[0142] CTB3: SEQ ID NO: 47
[0143] CTB4: SEQ ID NO: 48
[0144] CTB5: SEQ ID NO: 49
[0145] CTB6: SEQ ID NO: 50
[0146] CTB7: SEQ ID NO: 51
[0147] CTB8: SEQ ID NO: 52
[0148] CTB9: SEQ ID NO: 53
[0149] CTB10: SEQ ID NO: 54
[0150] PCR using the primers synthesized above was performed under
the condition described in Kang et al. (2004). That is, PCR was
performed in combination of CTB1 and CTB2, CTB3 and CTB4, CTB5 and
CTB6, CTB7 and CTB8, and CTB9 and CTB10, and DNA fragments of 72 bp
(1+2), 74 bp (3+4), 67 bp (5+6), 82 bp (7+8) and 68 bp (9+10) were
synthesized, respectively. Subsequently, the second PCR was
performed in combination of CTB1+2 and CTB3+4, CTB3+4 and CTB5+6,
CTB5+6 and CTB7+8, and CTB7+8 and CTB9+10, and DNA fragments of 135
bp (1+2+3+4), 132 bp (3+4+5+6), 138 bp (5+6+7+8), and 141 bp
(7+8+9+10) were synthesized, respectively. Then, the third PCR was
performed in combination of CTB1+2+3+4 and CTB3+4+5+6, and
CTB5+6+7+8 and CTB7+8+9+10, and DNA fragments of 194 bp
(1+2+3+4+5+6) and 198 bp (5+6+7+8+9+10) were synthesized,
respectively. Finally, PCR was performed in combination of
CTB1+2+3+4+5+6 and CTB5+6+7+8+9+10, and a DNA fragment of 315 bp in
which a BamHI site and a BglII site were added to a CTB coding
region was synthesized.
[0151] The DNA fragment prepared above was treated with BamHI and
BglII, and inserted into a BamHI-BglII gap in plasmid 8 (plasmid
9).
[0152] The PG12 spacer (SEQ ID NO: 2) was inserted between CTB and
the HA tag. A PG12-F primer (SEQ ID NO: 43) and a PG12-R primer
(SEQ ID NO: 44) were annealed and phosphorylated with T4 PNK. The
resulting phosphorylated DNA fragment was inserted into the BglII
gap of plasmid 9 (1.times.CTB (PG12)).
[0153] A CTB-PG12 fragment was cut out from 1.times.CTB (PG12)
using BamHI and BglII, and inserted into the BamHI gap of
1.times.CTB (PG12) (2.times.CTB (PG12)).
[0154] (3) Transient Expression Test Using Lactuca sativa
Protoplast
[0155] A leaf of potted Lactuca sativa (green wave) (about 1 g) was
cut into 0.5-cm square pieces using a surgical knife, to thereby
prepare leaf discs. The leaf discs were immersed in 500 mM
mannitol, and shaken for 1 hour. The leaf discs were immersed in 50
ml of a protoplastization enzyme solution (1.0% cellulose RS
(Yakult Honsha Co., Ltd.), 0.25% macerozyme R-10 (Yakult Honsha
Co., Ltd.), 400 mM mannitol, 8 mM CaCl.sub.2, and 5 mM Mes-KOH, pH
5.6), and the whole was shaken at room temperature for 2 hours. The
protoplast suspension was passed through meshes of 100 .mu.m and 40
.mu.m to remove the leaf discs. The protoplast suspension was
centrifuged at 60 g for 5 minutes to precipitate the protoplast.
The protoplast was resuspended in an aqueous solution containing
167 mM mannitol and 133 mM CaCl.sub.2, and the suspension was
centrifuged at 40 g for 5 minutes. The protoplast was resuspended
in an aqueous solution containing 333 mM mannitol and 66.7 mM
CaCl.sub.2, and the suspension was centrifuged at 40 g for 5
minutes. The protoplast was suspended in W5 solution (154 mM NaCl,
125 mM CaCl.sub.2, 5 mM KCl, 2 mM Mes-KOH, pH 5.6), and the
suspension was allowed to stand on ice for 1 hour. The protoplast
suspension was centrifuged at 40 g for 5 minutes, and the
protoplast was suspended in an MaMg solution (400 mM mannitol, 15
mM MgCl.sub.2, and 4 mM Mes-KOH, pH 5.6) to have a protoplast
concentration of 2.times.10.sup.6 cells/ml.
[0156] Each of the Stx2eB transient expression vector and the CTB
transient expression vector prepared above was mixed with 120 .mu.L
of a protoplast suspension, subsequently 140 .mu.L of PEG solution
(400 mM mannitol, 100 mM Ca(NO.sub.3).sub.2 and 40% PEG) was added
thereto, and the resulting mixture was blended gently and incubated
for 7 minutes. Then, 1 mL of W5 solution was added to the
protoplast suspension over about 20 minutes. A solution (1 mL)
obtained by mixing 400 mM mannitol and the W5 solution at a ratio
of 4:1 was added to the protoplast precipitated by centrifugation.
LS medium (1 mL) containing 1% sucrose, 400 mM mannitol, and 0.3 mM
carbenicillin was added to the protoplast precipitated by
centrifugation, and the mixture was then cultured in a dark place
at 25.degree. C. for 24 hours.
[0157] (4) Western Analysis
[0158] To the protoplast collected by centrifugation were added 30
.mu.l of SDS-sample buffer (4% (w/v) SDS, 20% (w/v) glycerol, 0.05%
(w/v) bromophenol blue, 300 mM .beta.-mercaptoethanol, 125 mM
Tris-HCl, pH 6.8), followed by thermal denaturation at 95.degree.
C. for 2 minutes, to thereby prepare samples. Proteins were
separated using a 15% acrylamide gel and blotted on a PVDF membrane
(Hybond-P; Amersham) using an electro transfer system. An anti-HA
antibody (No. 11 867 423 001, Roche) was used to detect Stx2eB and
CTB.
[0159] (a) Effects of Linking Number of Stx2eB
[0160] A result is shown in FIG. 2. When 1.times.Stx2eB (PG12) was
expressed, a signal was detected at a position of about 8.5 kDa.
When 2.times.Stx2eB (PG12) was expressed, a signal was detected at
a position of about 17 kDa at the same level as when 1.times.Stx2eB
(PG12) was expressed. When 3.times.Stx2eB (PG12) was expressed, a
signal was detected at a position of about 26 kDa, the signal being
smaller than that when 1.times.Stx2eB (PG12) was expressed. These
corresponded to the molecular weights estimated from the design of
the DNA constructs. When 4.times.Stx2eB (PG12) was expressed, the
specific signal was below a detection limit.
[0161] From the above result, it was demonstrated that when
2.times.Stx2eB (PG12) and 3.times.Stx2eB (PG12) were expressed,
hybrid proteins in which multiple Stx2eB proteins were linked could
be produced.
[0162] Since each of the above DNA constructs contains one molecule
of the HA tag (see FIG. 1), it is conceivable that a protein amount
corresponding to about 2 times an Stx2eB protein amount when
1.times.Stx2eB (PG12) is expressed is accumulated when
2.times.Stx2eB (PG12) is expressed. That is, it has been found that
when two DNAs encoding the Stx2eB protein are linked through DNA
encoding PG12, the Stx2eB protein can be produced with very high
efficiency.
[0163] Meanwhile, it has been also found that when three DNAs
encoding the Stx2eB protein or four DNAs encoding the Stx2eB
protein are linked through DNA encoding PG12, the amount of the
produced Stx2eB protein is equal to or less than the amount when
one Stx2eB protein is linked to PG12.
[0164] It has been found that the level of accumulated proteins
tends to be higher in the Stx2eB protein (1.times.Stx2eB (PG12))
having PG12 added at its carboxyl terminus prepared in this
experiment, compared with the Stx2eB protein having no PG12. This
speculates that it is a favorable form that PG12 is added to the
carboxyl terminus in the hybrid protein of the present
invention.
[0165] (b) Effects of Linking Number of CTB
[0166] The results are shown in FIG. 3.
[0167] When 1.times.CTB (PG12) was expressed, a signal was detected
at the position of about 20 kDa. When 2.times.CTB (PG12) was
expressed, a larger signal than that when 1.times.CTB (PG12) was
expressed was detected at the positions of about 33 kDa and about
35 kDa.
[0168] From the above results, it was demonstrated that the hybrid
protein in which two CTB proteins were linked could be produced
when 2.times.CTB (PG12) was expressed. These corresponded to the
molecular weights estimated from the design of the DNA
constructs.
[0169] Since each of the above DNA constructs contains one molecule
of the HA tag, it is conceivable that the protein amount
corresponding to the CTB protein amount which is larger than two
times the protein amount when 1.times.CTB (PG12) is expressed is
accumulated when 2.times.CTB (PG12) is expressed. That is, it has
been found that when two DNAs encoding the CTB protein are linked
through DNA encoding PG12, the CTB protein can be produced with
very high efficiency.
[0170] (5) Analysis of Localization of Stx2eB
[0171] In order to analyze the localization of Stx2eB in the cell,
a transient expression vector for the hybrid protein of Stx2eB and
a yellow fluorescent protein YFP was prepared. The design for the
vector is shown in FIG. 4. 1.times.Stx2eB (PG12)-YFP denotes a DNA
construct in which DNA encoding the Stx2eB protein is linked to DNA
encoding YFP. 2.times.Stx2eB (PG12)-YFP denotes a DNA construct in
which DNA encoding the hybrid protein in which two Stx2eB proteins
are linked through PG12 is linked to DNA encoding YFP.
2.times.Stx2eB (RS)-YFP using RS (Arg Ser) in place of PG12 as a
spacer was also prepared.
[0172] A specific technique is shown below.
[0173] First, a DNA fragment of YFP was amplified by PCR with pEYFP
(Clontech) as a template using a YFP-F primer (SEQ ID NO: 55) and a
YEP-R primer (SEQ ID NO: 56). The resulting DNA fragment was
treated with BamHI and BglII, and inserted into the BamHI-BglII gap
of plasmid 8 (ER-YFP).
[0174] An Stx2eB fragment was cleaved out from plasmid 1 with BamHI
and BglII and then inserted into the BamHI gap of the
1.times.Stx2eB (PG12) (2.times.Stx2eB (RS)).
[0175] An Stx2eB-PG12 fragment, a 2.times.(Stx2eB-RS) fragment, and
a 2.times.(Stx2eB-PG12) fragment were cleaved out from
1.times.Stx2eB (PG12), 2.times.Stx2eB (RS), and 2.times.Stx2eB
(PG12) with BamHI-BglII, respectively, and each fragment was
inserted into the BamHI gap of ER-YFP (1.times.Stx2eB (PG12)-YFP,
2.times.Stx2eB (RS)-YFP, and 2.times.Stx2eB (PG12)-YFP).
[0176] Meanwhile, an expression vector for a red fluorescent
protein (mRFP, Campbell R. E. et al., 2002, (see below)) localized
in the endoplasmic reticulum was prepared as a vector for
visualizing the endoplasmic reticulum. PCR was performed using an
mRFP-F primer (SEQ ID NO: 57) and an mRFP-R primer (SEQ ID NO: 58).
The resulting DNA fragment was treated with BamHI and BglII, and
inserted into the BamHI-BglII gap of plasmid 8 (ER-mRFP).
Campbell R. E. et al., A monomeric red fluorescent protein (2002),
Proc. Nat. Acad. Sci., 99: 7877-7882.
[0177] The Stx2eB expression vector and the mRFP expression vector
were introduced into the protoplasts of cultured tobacco cells
(BY2) in the same way as the above methods, and observed using a
confocal microscope observation system (LSM510, Zeiss).
[0178] The results are shown in FIGS. 5 and 6.
[0179] FIG. 5 shows the localization of the hybrid protein of
Stx2eB-YFP. When 2.times.Stx2eB (PG12)-YFB was expressed, it was
observed that the hybrid protein of Stx2eB-YFP was localized
granularly at about 100 granules/cell. When 1.times.Stx2eB
(PG12)-YFP and 2.times.Stx2eB (RS)-YFP were expressed, no granule
was observed.
[0180] In FIG. 6, an image A in a leftmost column shows the
localization of mRFP in a certain protoplast. The localization of
mRFP reflects the location of the endoplasmic reticulum. An image B
in a middle column shows the localization of the hybrid protein of
Stx2eB-YFP in the identical protoplast. An image in a rightmost
column is a composite image of the image A and the image B. It is
found from this composite image that the hybrid protein of
Stx2eB-YFP is localized granularly in the endoplasmic reticula.
[0181] (6) Effect of Vesicular Transport Function
[0182] It was examined in which process after the protein
translation the accumulation and aggregation of 2.times.Stx2eB
(PG12) occur.
[0183] 2.times.Stx2eB (PG12)-YFP was co-expressed with an
Arabidopsis vesicular transport regulation protein ARF1 or a
dominant negative mutant thereof ARF1 (Q71L) (ARF1DN). As a
reporter for inhibition of protein transport to Golgi apparatus by
the co-expression with ARF1DN, vacuole-GFP was co-expressed with
each ARF1. An expression vector for each ARF1 was constructed as
follows. An expression vector for the vacuole-GFP can be prepared
with reference to the following document.
[0184] Di Sansebastiano et. al., Specific accumulation of GFP in a
non-acidic vacuolar compartment via a C-terminal
propeptide-mediated sorting pathway. Plant J. (1998) 15,
449-457
[0185] As the vesicular transport regulation protein, expression
vectors for Arabidopsis ARF1 (GenBank ACCESSION No. M95166) and for
the dominant negative mutant thereof ARF1 (Q71L) (Misaki Takeuchi
et al., 2002, (see below)) were constructed. PCR using cDNA
prepared from Arabidopsis embryo plant as a template was performed
using an ARF1-F primer (SEQ ID NO: 59) and an ARF1-R primer (SEQ ID
NO: 60). The resulting DNA fragment was subcloned into the EcoRV
gap in pBluescript (Stratagene). Another PCR was performed using an
ARFQL-F primer (SEQ ID NO: 61) and an ARFQL-R primer (SEQ ID NO:
62) to substitute a glutamine residue at position 71 with a leucine
residue. Each resulting ARF1 fragment was subcloned into a
transient expression vector pBI221,
[0186] Each of the vectors prepared was introduced into the
protoplast of the cultured tobacco cell in the same manner as that
described above, and the respective proteins were co-expressed to
examine the localization of 2.times.Stx2eB (PG12).
[0187] The result is shown in FIG. 7.
[0188] Both when 2.times.Stx2eB (PG12)-YFP was co-expressed with
ARF1 and co-expressed with ARF1 (Q71L), granules were formed as
observed in an expression of 2.times.Stx2eB (PG12)-YFP alone. On
the other hand, co-expression of ARF1 (Q71L) inhibited the exit of
vacuole-GFP from ER. It was speculated from these that the granule
formation is not dependent on vesicular transport process from the
ER to Golgi apparatus.
<2> Transformation Experiments Using Cultured Tobacco
Cells
(1) Construction of Vectors for Transformation
[0189] 1.times.Stx2eB (PG12), 2.times.Stx2eB (PG12), 3.times.Stx2eB
(PG12), and 4.times.Stx2eB (PG12) were prepared in the same way as
above.
[0190] Further, by using RS (Arg, Ser), PG7 (SEQ ID NO: 63), or
SG12 (SEQ ID NO: 64) as a spacer instead of PG12, DNA constructs,
2.times.Stx2eB (RS), 2.times.Stx2eB (PG7), and 2.times.Stx2eB
(SG12) were prepared by the following methods.
[0191] A PG7 spacer (SEQ ID NO: 63) was inserted between Stx2eB and
the HA tag in the plasmid 8. A PG7-F primer (SEQ ID NO: 65) and a
PG7-R primer (SEQ ID NO: 66) were annealed and phosphorylated with
T4 PNK. The obtained phosphorylated DNA fragment was inserted into
the BglII gap of plasmid 8 (plasmid 10).
[0192] An SG12 spacer (SEQ ID NO: 64) was inserted between Stx2eB
and the HA tag. An SG12-F primer (SEQ ID NO: 67) and an SG12-R
primer (SEQ ID NO: 68) were annealed and phosphorylated with T4
PNK. The obtained phosphorylated DNA fragment was inserted into the
BglII gap of plasmid 8 (plasmid 11).
[0193] An Stx2eB fragment was cleaved out from plasmid 1 with BamHI
and BglII and then inserted into the BamHI gap of 1.times.Stx2eB
(PG12) (2.times.Stx2eB (RS)). An Stx2eB-PG7 fragment was cleaved
out from plasmid 10 with BamHI and BglII and then inserted into the
BamHI gap of 1.times.Stx2eB (PG12) (2.times.Stx2eB (PG7)). An
Stx2eB-SG12 fragment was cleaved out from plasmid 11 with BamHI and
BglII and then inserted into the BamHI gap of 1.times.Stx2eB (PG12)
(2.times.Stx2eB (SG12)).
[0194] In order to produce Stx2eB using a stable transformant of
the plant, each of the DNA constructs of the above Stx2eB was
subcloned into a vector for transformation (for the design of the
vectors, see FIG. 1). Each of 1.times.Stx2eB (PG12), 2.times.Stx2eB
(PG12), 3.times.Stx2eB (PG12), 4.times.Stx2eB (PG12),
2.times.Stx2eB (RS), 2.times.Stx2eB (PG7), and 2.times.Stx2eB
(SG12) was inserted into pBI121 (Clontech) using XbaI and SacI, and
allocated between a cauliflower mosaic virus 35S RNA promoter (35S
pro.) and a nopaline synthetase gene transcription terminator
(NOS-T).
[0195] (2) Transformation of Cultured Tobacco Cells
[0196] The produced vector for transformation was introduced into
Agrobacterium tumefacience EHA105 using an electroporation method.
An Agrobacterium medium (100 .mu.L) cultured in 5 mL of LB medium
containing 100 mg/L of kanamycin at 28.degree. C. for 2 nights was
mixed with 5 to 10 mL of a suspension of cultured tobacco cells
(Nicotiana tabacum, cv BY2) on the fourth day of the culture in a
petri-dish, and the mixture was co-cultured by being left to stand
in a dark place at 25.degree. C. for 2 nights. In order to remove
Agrobacterium, the medium in the petri-dish was transferred into a
15-mL centrifuging tube, which was then centrifuged (1,000 rpm, 5
minutes, 4.degree. C.), and a supernatant was removed. A modified
LS medium was charged, and the tube was centrifuged (1,000 rpm, 5
minutes, 4.degree. C.) to wash the cells. This washing operation
was repeated four times to remove Agrobacterium. The resultant BY2
cells were then placed in a modified LS agar medium containing
kanamycin (100 mg/L), and cultured by being left to stand in the
dark place at 25.degree. C. After about 2 to 3 weeks, cells which
has formed a callus were transferred to a new plate, and a growing
clone was selected.
[0197] (3) Semi-Quantification of Stx2eB Protein Using Western
Analysis
[0198] Cultured tobacco cells cultured in a plate medium were
collected in a centrifuging tube, and 1 .mu.L of SDS sample buffer
per mg of cell weight was added. The cells were denatured at
95.degree. C. for 2 minutes to make a sample for electrophoresis.
Proteins were separated using 15% acrylamide gel, and then blotted
onto a PVDF membrane (Hybond-P; Amersham) using an electrotransfer
apparatus. An Stx2eB protein was detected using an anti-HA antibody
(No. 11 867 423 001, Roche). Serial dilution of Stx2eB having the
HA tag at known concentrations was prepared, and loaded on the gel.
A calibration curve was prepared based on their signal intensities,
and the amount of Stx2eB proteins in each sample was
calculated.
[0199] The results are shown below.
[0200] (a) Effects of Linking Number of Stx2eB
[0201] The results are shown in FIGS. 8 and 9.
[0202] When 1.times.Stx2eB (PG12) was expressed, signals were
detected at the positions of about 10 kDa and about 17 kDa. They
are presumed to be Stx2eB in which the signal peptide was cleaved
and Stx2eB in which the signal peptide is not cleaved,
respectively. When 2.times.Stx2eB (PG12) was expressed, a signal
was detected at the position of about 19 kDa at the similar level
to that when 1.times.Stx2eB (PG12) was expressed. When
3.times.Stx2eB (PG12) was expressed, a signal was detected at the
position of about 26 kDa, the signal being smaller than that when
1.times.Stx2eB (PG12) was expressed. These corresponded to the
molecular weights estimated from the design of the DNA constructs.
When 4.times.Stx2eB (PG12) was expressed, a specific signal was
below the detection limit (data not shown).
[0203] It has been found from the above that 2.times.Stx2eB (PG12)
accumulates the larger amount of Stx2eB than 1.times.Stx2eB (PG12)
and 3.times.Stx2eB (PG12).
[0204] (b) Effects of Spacer
[0205] The results are shown in FIGS. 10 and 11.
[0206] Based on the intensity of the signal corresponding to
Stx2eB, the level of accumulated Stx2eB was the highest when PG12
was used as a spacer. The levels were secondly high when PG7 and
SG12 were used, which were in the similar degree. The level was
lowest when RS was used. This indicates that the length and the
amino acid sequence of the spacer between two Stx2eBs affect the
level of the accumulated 2.times.Stx2eB protein.
[0207] (4) Quantification of mRNA by Real-Time PCR
[0208] It was examined whether the level of the accumulated protein
was influenced by a transcription level or not.
[0209] RNA was prepared using RNeasy Mini Kit (Qiagen) from each of
the transformed BY2 cells obtained above. The resulting RNA was
treated with DNase, and then reversely transcribed using
Transcriptor Reverse Transcriptase (Roche). Real-time PCR was
performed using SYBR Green PCR Master Mix (Applied Biosystems). A
primer set (SEQ ID NO: 69 and SEQ ID NO: 70) which amplified the
region containing NtADH 5'-UTR and the signal peptide which were
common in the respective constructs was used for the quantification
of Stx2eB mRNA. The amount of an expressed BY2 ubiquitin gene was
quantified using a UBQ-F primer (SEQ ID NO: 71) and a UBQ-R primer
(SEQ ID NO: 72) to compensate the mRNA level of an Stx2eB gene.
Note that the mRNA level of 1.times.Stx2eB (PG12) was calculated by
multiplying a quantified value by 1/2.
[0210] The results are shown in FIG. 12.
[0211] The accumulation levels of Stx2eB protein per mRNA tend to
be higher in cells expressing 2.times.Stx2eB (PG12) than those in
cells expressing 2.times.Stx2eB (RS) or 1.times.Stx2eB (PG12). This
indicates that the difference of the spacer does not influence on
the transcription level but influences on a translation level or
stability of the protein after the translation. Considering
together the result that the 2.times.Stx2eB protein was localized
granularly, it is conceivable that the spacer influences on the
stability of the protein after the translation.
<3> Transient Expression Experiments
[0212] (1) Construction of Stx2eB Transient Expression Vectors
[0213] Transient expression vectors for 1.times.Stx2eB (PG12),
2.times.Stx2eB (PG12), 3.times.Stx2eB (PG12), and 4.times.Stx2eB
(PG12) were constructed by the method in above <1> (1) (FIG.
13-A). These vectors are referred to as ER-1.times.Stx2eB (PG12),
ER-2.times.Stx2eB (PG12), ER-3.times.Stx2eB (PG12), and
ER-4.times.Stx2eB (PG12), respectively. Note that "ER" means the
endoplasmic reticulum type.
[0214] Further, transient expression vectors containing the
cytoplasm (Cyt) type of DNA construct (FIG. 13-B) and expression
vectors containing the chloroplast (Chl) type of DNA construct
(FIG. 13-C) were constructed by the following method. These DNA
constructs were designed to contain DNA encoding the endoplasmic
reticulum retention signal peptide, for the purpose of expressing
the hybrid protein having as close a structure as possible to that
of the endoplasmic reticulum type of hybrid protein. But, since
these DNA constructs do not contain DNA encoding the secretory
signal peptide, the endoplasmic reticulum retention signal peptide
does not exert its function (retention of the protein in the
endoplasmic reticulum) in the produced hybrid protein.
[0215] An NtADH 5'-UTR fragment was amplified by PCR using an ADH
XbaI-F primer (SEQ ID NO: 34) and an ADH BamHI-R primer (SEQ ID NO:
112), and the resulting DNA fragment was treated with XbaI and
BamHI. The XbaI-BamHI fragment of NtADH 5'-UTR was inserted into
the XbaI-BamHI gap of each of ER-1.times.Stx2eB (PG12),
ER-2.times.Stx2eB (PG12), ER-3.times.Stx2eB (PG12), and
ER-4.times.Stx2eB (PG12) to prepare Cyt-1.times.Stx2eB (PG12),
Cyt-2.times.Stx2eB (PG12), Cyt-3.times.Stx2eB (PG12), and
Cyt-4.times.Stx2eB (PG12) which were cytoplasm type Stx2eB
vectors.
[0216] The NtADH 5'-UTR fragment was amplified by PCR using an ADH
XbaI-F primer (SEQ ID NO: 34) and an ADH NsiI-R primer (SEQ ID NO:
35). A DNA fragment (SEQ ID NO: 80) encoding the transit signal
peptide, the chloroplast being derived from Lactuca sativa Rbcs
(Rubisco small subunit) (GenBank ACCESSION D14001) (transit
peptide, T.P.), was amplified by PCR with cDNA of a Lactuca sativa
leaf as a template using a TP NsiI-F primer (SEQ ID NO: 113) and a
TP BamHI-R primer (SEQ ID NO: 114). Each resulting DNA fragment of
NtADH 5'-UTR and each DNA fragment of the secretory signal peptide
was treated with NsiI (manufactured by Toyobo Co., Ltd.), ligated
using Ligation High (Toyobo Co., Ltd.) followed by being blunted,
and cloned into the EcoRV gap of pBluescript II SK (manufactured by
Stratagene) (plasmid 12). Plasmid 12 was treated with NsiI, blunted
with T4 DNA polymerase (Toyobo Co., Ltd.), and then self-ligated to
be fused so that the initiation codon of NtADH and the initiation
codon of Rbcs were matched (plasmid 13). An NtADH 5'-UTR-T.P.
fusion fragment was cut out from plasmid 13 using XbaI and BamHI,
and inserted into the XbaI-BamHI gap of each of ER-1.times.Stx2eB
(PG12), ER-2.times.Stx2eB (PG12), ER-3.times.Stx2eB (PG12), and
ER-4.times.Stx2eB (PG12) to prepare Chl-1.times.Stx2eB (PG12),
Chl-2.times.Stx2eB (PG12), Chl-3.times.Stx2eB (PG12), and
Chl-4.times.Stx2eB (PG12), which were chloroplast type Stx2eB
vectors.
[0217] (2) Production of CTB Transient Expression Vectors
[0218] Transient expression vectors for 1.times.CTB (PG12) and
2.times.CTB (PG12) were constructed by the method in above
<1> (2) (FIG. 14-A). Hereinafter, these vectors are referred
to as ER-1.times.CTB (PG12) and ER-2.times.CTB (PG12).
[0219] Transient expression vectors containing the cytoplasm (Cyt)
type of DNA construct (FIG. 14-B) and expression vectors containing
the chloroplast (Chl) type of DNA construct (FIG. 14-C) were
constructed by the following methods.
[0220] A CTB-PG12 fragment was cut out from ER-1.times.CTB (PG12)
using BamHI and BglII, and inserted into the BamHI-BglII gap in
Cyt-1.times.Stx2eB (PG12) and the BamHI-BglII gap in
Chl-1.times.Stx2eB (PG12) produced in above <3> (1) to
prepare cytoplasm type of 1.times.CTB (PG12) and chloroplast type
of 1.times.CTB (PG12) (Cyt-1.times.CTB (PG12), Chl-1.times.CTB
(PG12)).
[0221] Subsequently, a 2.times.(CTB-PG12) fragment was cut out from
ER-2.times.CTB (PG12) using BamHI and BglII, and inserted into the
BamHI-BglII gap of Cyt-1.times.Stx2eB (PG12) and the BamHI-BglII
gap of Chl-1.times.Stx2eB (PG12) to prepare cytoplasm type of
2.times.CTB (PG12) and chloroplast type of 2.times.CTB (PG12)
(Cyt-2.times.CTB (PG12), Chl-2.times.CTB (PG12)).
[0222] (3) Transient Expression Experiments and Western
Analysis
[0223] Transient expression experiments were carried out using
Lactuca sativa protoplasts in the same way as in above <1>
(3). Subsequently, Stx2eB and CTB were detected in the same way as
in <1> (4).
[0224] (a) Effects of Linking Number of Stx2eB
[0225] The results are shown in FIG. 15.
[0226] When ER-1.times.Stx2eB (PG12) was expressed, a signal was
detected at the position of about 10 kDa. When ER-2.times.Stx2eB
(PG12) was expressed, a signal was detected at the position of
about 19 kDa, the signal being larger than that when
ER-1.times.Stx2eB (PG12) was expressed. When ER-3.times.Stx2eB
(PG12) was expressed, a signal was detected at the position of
about 27 kDa, the signal being larger than that when
ER-1.times.Stx2eB (PG12) was expressed. These corresponded to the
molecular weights estimated from the design of the DNA constructs.
When ER-4.times.Stx2eB (PG12) was expressed, a specific signal was
below the detection limit.
[0227] When Cyt-1.times.Stx2eB (PG12) was expressed, a specific
signal was below the detection limit. When Cyt-2.times.Stx2eB
(PG12) was expressed, a signal was detected at the position of
about 20 kDa. When Cyt-3.times.Stx2eB (PG12) was expressed, a
signal was detected at the position of about 30 kDa. These
corresponded to the molecular weights estimated from the design of
the DNA constructs. Further, when Cyt-4.times.Stx2eB (PG12) was
expressed, a specific signal was below the detection limit.
[0228] When Chl-1.times.Stx2eB (PG12) was expressed, a signal was
detected faintly at the position of about 14 kDa. When
Chl-2.times.Stx2eB (PG12) was expressed, a signal was detected at
the position of about 22 kDa, the signal being at the similar level
to that when ER-3.times.Stx2eB (PG12) was expressed. When
Chl-3.times.Stx2eB (PG12) was expressed, a signal was detected at
the position of about 30 kDa, the signal being at the similar level
to that when Chl-2.times.Stx2eB (PG12) was expressed. These
corresponded to the molecular weights estimated from the design of
the DNA constructs. When Chl-4.times.Stx2eB (PG12) was expressed, a
signal was detected faintly at the position of about 34 kDa.
[0229] Since each of the above DNA constructs contains one molecule
of the HA tag (see FIG. 13), when DNA encoding two Stx2eBs is
expressed and when DNA encoding three Stx2eBs is expressed, the
amounts of the accumulated proteins are thought to correspond to
about two times and about three times, respectively, the amount
when DNA containing one Stx2eB is expressed.
[0230] Therefore, it has been found that when any of the
endoplasmic reticulum type (ER), cytoplasm type (Cyt), and
chloroplast type (Chl) of DNA constructs is expressed, the Stx2eB
protein can be more efficiently accumulated when the protein in
which two or three Stx2eBs are tandemly linked through the spacer
is expressed than when one Stx2eB protein is expressed.
[0231] (b) Effects of Linking Number of CTB
[0232] The results are shown in FIG. 16.
[0233] When ER-1.times.CTB (PG12) was expressed, a signal was
detected at the position of about 17 kDa. When ER-2.times.CTB
(PG12) was expressed, a larger signal than that when
ER-1.times.Stx2eB (PG12) was expressed was detected at the
positions of about 28 kDa and about 30 kDa. These corresponded to
the molecular weights estimated from the design of the DNA
constructs.
[0234] When Cyt-1.times.CTB (PG12) was expressed, a signal was
faintly detected at the position of about 14 kDa. When
Cyt-2.times.CTB (PG12) was expressed, a signal was detected at the
position of about 26 kDa, the signal being at the similar level to
that when ER-2.times.CTB (PG12) was expressed. These corresponded
to the molecular weights estimated from the design of the DNA
constructs.
[0235] When Chl-1.times.CTB (PG12) was expressed, a signal was
detected at the position of about 14 kDa. When Chl-2.times.CTB
(PG12) was expressed, a signal was detected at the position of
about 26 kDa, the signal being at the similar level to that when
ER-2.times.CTB (PG12) was expressed. These corresponded to the
molecular weights estimated from the design of the DNA
constructs.
[0236] From the above, it has been found that when any of the
endoplasmic reticulum type (ER), cytoplasm type (Cyt), and
chloroplast type (Chl) of DNA constructs is expressed, CTB proteins
can be more efficiently accumulated when the protein in which two
CTBs are tandemly linked through the spacer is expressed than when
one CTB protein is expressed.
<4> Transformation Experiments Using Cultured Tobacco
Cells
(1) Construction of Vectors for Transformation
[0237] Transformation experiments were performed using
ER-2.times.Stx2eB (PG12), Cyt-1.times.Stx2eB (PG12),
Cyt-2.times.Stx2eB (PG12), and Cyt-3.times.Stx2eB (PG12) prepared
above.
[0238] Vectors for transformation were prepared in the same way as
the method in above <2> (1).
(2) Transformation and Western Analysis of Cultured Tobacco
Cells
[0239] Transformation experiments and the western analysis were
carried out in the same ways as the methods in above <2> (2)
and (3).
[0240] The results are shown in FIG. 17.
[0241] When ER-2.times.Stx2eB (PG12) was expressed, a signal was
detected at the positions of about 19, 21, and 23 kDa. When
Cyt-1.times.Stx2eB (PG12) was expressed, a specific signal was
below the detection limit. When Cyt-2.times.Stx2eB (PG12) was
expressed, a signal was detected at the position of about 19 kDa.
When Cyt-3.times.Stx2eB (PG12) was expressed, a signal was detected
at the position of about 27 kDa, the signal being larger than that
when Cyt-2.times.Stx2eB (PG12) was expressed.
[0242] From the above, it has been found that also in the
transformant of the cultured tobacco cell, Stx2eB proteins can be
more efficiently accumulated when the protein in which two or three
Stx2eBs are tandemly linked through the spacer is expressed than
when one Stx2eB protein is expressed. It has been also found that
when the cytoplasm type of DNA construct is expressed in the
transformant of the cultured tobacco cell, in particular when the
protein in which three Stx2eBs are tandemly linked through the
spacer is expressed, the Stx2eB proteins can be efficiently
accumulated.
[0243] It has been also found that in the transformant of the
cultured tobacco cell, the Stx2eB proteins can be more efficiently
accumulated when the endoplasmic reticulum type of DNA construct is
expressed than when the cytoplasm type of DNA construct is
expressed.
<5> Transformation Experiments Using Tobacco Plant Body
[0244] (1) Construction of Vectors for Transformation
[0245] Transformation experiments were performed using
ER-2.times.Stx2eB (PG12), Chl-1.times.Stx2eB (PG12),
Chl-2.times.Stx2eB (PG12), and Chl-3.times.Stx2eB (PG12) prepared
above.
[0246] Vectors for transformation were prepared in the same way as
the method in above <2> (1).
[0247] (2) Transformation of Tobacco Plant Body
[0248] Tobacco plant bodies were transformed by the following
method using the vectors prepared above.
[0249] Seeds of the tobacco plant body (Nicotiana tabacum L. cv.
Petit habana SR1) were sterilized and seeded on an MS medium. A
leaf portion of the sterilized Nicotiana tabacum was cut into
pieces each having a size of about 1.times.1 cm without including
leaf veins, and placed to face up the backside of the leaf in a
petri-dish containing sterile water. An Agrobacterium suspension
cultured for two nights in the LB medium containing 100 mg/L of
kanamycin and obtained in above <2> (2) was poured in the
petri-dish, and the leaf piece was immersed therein for 3 to 5
minutes. The leaf piece was picked up, and an extra bacterial
medium on the leaf piece was wiped with sterile kim-towel. The leaf
piece was placed on a callus formation medium and cultured at
25.degree. C. After 2 to 3 days, when Agrobacterium became visible
on the medium, the leaf piece was transferred into a 50-mL tube,
washed five times with sterile water, placed on a callus formation
medium (containing 100 mg/L of kanamycin and 250 mg/L of
carbenicillin), and cultured at 25.degree. C. for 1 to 2 weeks.
When the leaf piece curled up compared with the original and showed
a concavoconvex surface, the leaf piece was transferred into a
shoot formation medium (containing 100 mg/L of kanamycin and 250
mg/L of carbenicillin). After additional 4 to 6 weeks, a shoot
having a developed stem and leaf portion was cut off, transferred
to a root formation medium (containing 100 mg/L of kanamycin and
250 mg/L of carbenicillin), and cultured at 25.degree. C. until
rhizogenesis was observed. A plant body grown to a certain size was
grown as a pot plant.
[0250] (3) Western Analysis
[0251] The leaf of the genetically engineered tobacco plant body
produced above was sampled, and an SDS sample buffer was added
thereto in the proportion of 1 .mu.L of SDS to 1 mg of leaf. The
sample was thermally denatured at 95.degree. C. for 2 minutes to
serve as the sample for electrophoresis. Proteins were separated
using 15% acrylamide gel, and then blotted onto a PVDF membrane
(Hybond-P; Amersham) using an electrotransfer apparatus. The Stx2eB
protein was detected using an anti-HA antibody (No. 11 867 423 001,
Roche).
[0252] The results are shown in FIGS. 18 and 19.
[0253] Clones in which Stx2eB was accumulated with high efficiency
were obtained in the plant body transformed with one of
ER-2.times.Stx2eB (PG12), Chl-1.times.Stx2eB (PG12),
Chl-2.times.Stx2eB (PG12), and Chl-3.times.Stx2eB (PG12). Also in
the chloroplast type of DNA constructs, it has been found that the
clone accumulating Stx2eB efficiently is obtained with a higher
probability when the protein in which two or three Stx2eBs are
tandemly linked through the spacer is expressed than when one
Stx2eB protein is expressed.
[0254] When ER-2.times.Stx2eB (PG12) was expressed, signals were
detected at the positions of about 15 kDa, about 19 kDa, and about
22 kDa. When Chl-1.times.Stx2eB (PG12) was expressed, a signal was
detected at the position of about 12 kDa. When Chl-2.times.Stx2eB
(PG12) was expressed, a signal was detected at the position of
about 19 kDa. When Chl-3.times.Stx2eB (PG12) was expressed, a
signal was detected at the position of about 27 kDa. These
corresponded to the molecular weights estimated from the design of
the DNA constructs.
<6> Transformation Experiments Using Cultured Tobacco
Cells
(1) Construction of Vectors for Stx2eB Transformation
[0255] ER-2.times.Stx2eB (PG12) was prepared by the method in above
<1> (1). ER-2.times.Stx2eB (PG17) and ER-2.times.Stx2eB
(PG22) were prepared by the following method. The design of the DNA
constructs is shown in FIG. 20.
[0256] A PG7-F primer (SEQ ID NO: 65) and a PG7-R primer (SEQ ID
NO: 66) were annealed and phosphorylated with T4 PNK. The resulting
phosphorylated DNA fragment was inserted into the BglII gap of
ER-1.times.Stx2eB (PG12) obtained in <1> (1) (plasmid
14).
[0257] A PG12-F primer (SEQ ID NO: 43) and a PG12-R primer (SEQ ID
NO: 44) were annealed and phosphorylated with T4 PNK. The resulting
phosphorylated DNA fragment was inserted into the BglII gap of
ER-1.times.Stx2eB (PG12) (plasmid 15).
[0258] An Stx2eB-PG17 fragment was cut out from plasmid 14 using
BamHI and BglII, and inserted into the BamHI gap of
ER-1.times.Stx2eB (PG12) (2.times.Stx2eB (PG17)). An Stx2eB-PG22
fragment was cut out from plasmid 15 using BamHI and BglII, and
inserted into the BamHI gap of ER-1.times.Stx2eB (PG12)
(ER-2.times.Stx2eB (PG22)).
[0259] In order to produce Stx2eB using the stable transformant of
the plant, each of the above DNA constructs for Stx2eB was
subcloned into a vector for transformation. That is, each of
ER-2.times.Stx2eB (PG12), ER-2.times.Stx2eB (PG17), and
ER-2.times.Stx2eB (PG22) was inserted into pBI121 (Clontech) using
XbaI and SacI, and allocated between the cauliflower mosaic virus
35S RNA promoter (35S pro.) and the nopaline synthetase gene
transcription terminator (NOS-T).
[0260] (2) Construction of Vectors for CTB Transformation
[0261] ER-2.times.CTB (PG12) was prepared by the method in above
<1> (2). ER-2.times.CTB (PG17) and ER-2.times.CTB (PG22) were
prepared by the following method. The design of the DNA constructs
is shown in FIG. 21.
[0262] A PG7-F primer (SEQ ID NO: 65) and a PG7-R primer (SEQ ID
NO: 66) were annealed and phosphorylated with T4 PNK. The resulting
phosphorylated DNA fragment was inserted into the BglII gap of
ER-1.times.CTB (PG12) obtained in <1> (2) (plasmid 16). A
PG12-F primer (SEQ ID NO: 43) and a PG12-R primer (SEQ ID NO: 44)
were annealed and phosphorylated with T4 PNK. The resulting
phosphorylated DNA fragment was inserted into the BglII gap of
ER-1.times.CTB (PG12) (plasmid 17).
[0263] A CTB-PG17 fragment was cut out from plasmid 16 using BamHI
and BglII, and inserted into the BamHI gap of ER-1.times.CTB (PG12)
(ER-2.times.CTB (PG17)). A CTB-PG22 fragment was cut out from
plasmid 17 using BamHI and BglII, and inserted into the BamHI gap
of ER-1.times.CTB (PG12) (ER-2.times.CTB (PG22)).
[0264] In order to produce CTB using the stable transformant of the
plant, each of the above DNA constructs for CTB was subcloned into
a vector for transformation. That is, each of ER-2.times.CTB
(PG12), ER-2.times.CTB (PG17), and ER-2.times.CTB (PG22) was
inserted into pBI121 (Clontech) using XbaI and SacI, and allocated
between the cauliflower mosaic virus 35S RNA promoter (35S pro.)
and the nopaline synthetase gene transcription terminator
(NOS-T).
[0265] (3) Transformation Experiments and Western Analysis
[0266] Transformation experiments and western analysis were carried
out by the methods in above <2> (2) and (3).
[0267] (a) Effects of Length of Spacer on Tandem Linking of
Stx2eB
[0268] The results are shown in FIG. 22.
[0269] When one of ER-2.times.Stx2eB (PG17) and ER-2.times.Stx2eB
(PG22) was expressed, a signal was detected at the similar level to
that when ER-2.times.Stx2eB (PG12) was expressed. This indicates
that any of PG17 and PG22 exhibits the same effect as PG12.
[0270] When ER-2.times.Stx2eB (PG12) was expressed, signals were
detected at the positions of about 19 kDa and about 22 kDa. When
ER-2.times.Stx2eB (PG17) was expressed, signals were detected at
the positions of about 19 kDa and about 22 kDa. When
ER-2.times.Stx2eB (PG22) was expressed, signals were detected at
the positions of about 20 kDa and about 23 kDa. These corresponded
to the molecular weights estimated from the design of the DNA
constructs.
[0271] (b) Effects of Length of Spacer on Tandem Linking of CTB
[0272] The results are shown in FIG. 23.
[0273] When one of ER-2.times.CTB (PG17) and ER-2.times.CTB (PG22)
was expressed, a signal was detected at the similar level to that
when ER-2.times.CTB (PG12) was expressed. This indicates that any
of PG17 and PG22 exhibits the same effect as PG12.
[0274] When ER-2.times.CTB (PG12) was expressed, signals were
detected at the positions of about 32 kDa, about 34 kDa, and about
36 kDa. When ER-2.times.CTB (PG17) was expressed, signals were
detected at the positions of about 32 kDa, about 34 kDa, and about
36 kDa. When ER-2.times.CTB (PG22) was expressed, signals were
detected at the positions of about 32 kDa, about 34 kDa, and about
36 kDa. These corresponded to the molecular weights estimated from
the design of the DNA constructs.
INDUSTRIAL APPLICABILITY
[0275] The hybrid protein of the present invention is highly stable
and accumulated at a high level in plant cells. Besides, by
producing the hybrid protein of the present invention in the plant
using the DNA construct of the present invention, it is possible to
efficiently produce oral vaccines for Shiga toxin, cholera toxin,
and Escherichia coli heat-labile toxin.
[0276] The present invention enables to express a bacterial antigen
in the plant at the level which is enough to induce immunity. The
present invention enables to give the immunity against the
bacterial antigen to the animal at low cost by giving a transgenic
plant as food to the animal. For example, the present invention is
useful for developing swine edema disease vaccine and cholera
vaccine.
Sequence CWU 1
1
114136DNAArtificial SequenceDescription of Artificial Sequence
Synthetic oligonucleotide 1agatcccctg gttctggtcc tggttctcct agatcc
36212PRTArtificial SequenceDescription of Artificial Sequence
Synthetic peptide 2Arg Ser Pro Gly Ser Gly Pro Gly Ser Pro Arg Ser
1 5 10 3959DNAEscherichia coli 3atgaagtgta tattgttaaa gtggatactg
tgtctgttac tgggtttttc ttcggtatcc 60tattcccagg agtttacgat agacttttcg
actcaacaaa gttatgtatc ttcgttaaat 120agtatacgga cagcgatatc
gacccctctt gaacatatat ctcagggagc tacatcggta 180tccgttatta
atcatacacc accaggaagt tatatttccg taggtatacg agggcttgat
240gtttatcagg agcgttttga ccatcttcgt ctgattattg aacgaaataa
tttatatgtg 300gctggatttg ttaatacgac aacaaatact ttctacagat
tttcagattt gcacatatat 360cattgcccgg tgtgacaact atttccatga
caacggacag cagttatacc actctgcaac 420gtgtcgcagc gctggaacgt
tccggaatgc aaatcagtcg tcactcactg gtttcatcat 480atctggcgtt
aatggagttc agtggtaata caatgaccag agatgcatca agagcagttc
540tgcgttttgt cactgtcaca gcagaagcct tacggttcag gcaaatacag
agagaatttc 600gtctggcact gtctgaaact gctcctgttt atacgatgac
gccggaagac gtggacctca 660ctctgaactg ggggagaatc agcaatgtgc
ttccggagta tcggggagag gctggtgtca 720gagtggggag aatatccttt
aataatatat cagcgatact tggtactgtg gccgttatac 780tgaattgcca
tcatcagggc gcacgttctg ttcgcgccgt gaatgaagag agtcaaccag
840aatgtcagat aactggcgac aggcccgtta taaaaataaa caatacatta
tgggaaagta 900atacagcagc agcgtttctg aacagaaagt cacagccttt
atatacaact ggtgaatga 9594304PRTEscherichia coli 4Met Lys Cys Ile
Leu Leu Lys Trp Ile Leu Cys Leu Leu Leu Gly Phe 1 5 10 15 Ser Ser
Val Ser Tyr Ser Gln Glu Phe Thr Ile Asp Phe Ser Thr Gln 20 25 30
Gln Ser Tyr Val Ser Ser Leu Asn Ser Ala Ile Ser Thr Pro Leu Glu 35
40 45 His Ile Ser Gln Gly Ala Thr Ser Val Ser Val Ile Asn His Thr
Pro 50 55 60 Pro Gly Ser Tyr Ile Ser Val Gly Ile Arg Gly Leu Asp
Val Tyr Gln 65 70 75 80 Glu Arg Phe Asp His Leu Arg Leu Ile Ile Glu
Arg Asn Asn Leu Tyr 85 90 95 Phe Val Asn Thr Thr Thr Asn Thr Phe
Tyr Arg Phe Ser Asp Phe Ala 100 105 110 His Ile Ser Leu Pro Gly Val
Thr Thr Ile Ser Met Thr Thr Asp Ser 115 120 125 Ser Tyr Thr Thr Leu
Gln Arg Val Ala Ala Leu Glu Arg Ser Gly Met 130 135 140 Gln Ile Ser
Arg His Ser Leu Tyr Leu Ala Leu Met Glu Phe Ser Gly 145 150 155 160
Asn Thr Met Thr Arg Asp Ala Ser Arg Ala Val Leu Arg Phe Val Thr 165
170 175 Val Thr Ala Glu Ala Leu Arg Phe Arg Gln Ile Gln Arg Glu Phe
Arg 180 185 190 Leu Ala Leu Ser Glu Thr Ala Pro Val Tyr Thr Met Thr
Pro Asp Leu 195 200 205 Thr Leu Asn Trp Gly Arg Ile Ser Asn Val Leu
Pro Glu Tyr Arg Gly 210 215 220 Glu Ala Gly Val Arg Val Gly Arg Ile
Ser Phe Asn Asn Ile Ser Ala 225 230 235 240 Ile Leu Gly Thr Val Ala
Val Ile Leu Asn Cys His His Gln Gly Ala 245 250 255 Arg Ser Val Arg
Ala Glu Ser Gln Pro Glu Cys Gln Ile Thr Gly Asp 260 265 270 Arg Pro
Val Ile Lys Ile Asn Asn Thr Leu Trp Glu Ser Asn Thr Ala 275 280 285
Ala Ala Phe Leu Asn Arg Lys Ser Gln Pro Leu Tyr Thr Thr Gly Glu 290
295 300 5210DNAEscherichia coli 5gcggcggatt gtgctaaagg taaaattgag
ttttccaagt ataatgagga taataccttt 60actgtgaagg tgtcaggaag agaatactgg
acgaacagat ggaatttgca gccattgtta 120caaagtgctc agctgacagg
gatgactgta acaatcatat ctaatacctg cagttcaggc 180tcaggctttg
cccaggtgaa gtttaactga 210669PRTEscherichia coli 6Ala Ala Asp Cys
Ala Lys Gly Lys Ile Glu Phe Ser Lys Tyr Asn Glu 1 5 10 15 Asp Asn
Thr Phe Thr Val Lys Val Ser Gly Arg Glu Tyr Trp Thr Asn 20 25 30
Arg Trp Asn Leu Gln Pro Leu Leu Gln Ser Ala Gln Leu Thr Gly Met 35
40 45 Thr Val Thr Ile Ile Ser Asn Thr Cys Ser Ser Gly Ser Gly Phe
Ala 50 55 60 Gln Val Lys Phe Asn 65 7312DNAVibrio cholerae
7accccccaga acatcaccga cctctgcgcc gagagccaca acacccaaat ctacaccctc
60aacgacaaga ttttcagcta caccgagagc ctcgccggca agagggagat ggccatcatc
120accttcaaga acggcgccat cttccaggtc gaggtccccg gcagccagca
catcgacagc 180cagaagaagg ccatcgagag gatgaaggac accctcagga
tcgcctacct caccgaggcc 240aaggtcgaga agctctgcgt ctggaacaac
aagacccccc acgccatcgc cgccatcagc 300atggccaact ga 3128103PRTVibrio
cholerae 8Thr Pro Gln Asn Ile Thr Asp Leu Cys Ala Glu Ser His Asn
Thr Gln 1 5 10 15 Ile Tyr Thr Leu Asn Asp Lys Ile Phe Ser Tyr Thr
Glu Ser Leu Ala 20 25 30 Gly Lys Arg Glu Met Ala Ile Ile Thr Phe
Lys Asn Gly Ala Ile Phe 35 40 45 Gln Val Glu Val Pro Gly Ser Gln
His Ile Asp Ser Gln Lys Lys Ala 50 55 60 Ile Glu Arg Met Lys Asp
Thr Leu Arg Ile Ala Tyr Leu Thr Glu Ala 65 70 75 80 Lys Val Glu Lys
Leu Cys Val Trp Asn Asn Lys Thr Pro His Ala Ile 85 90 95 Ala Ala
Ile Ser Met Ala Asn 100 9453DNAArtificial SequenceDescription of
Artificial Sequence Synthetic polynucleotide 9gcggcggatt gtgctaaagg
taaaattgag ttttccaagt ataatgagga taataccttt 60actgtgaagg tgtcaggaag
agaatactgg acgaacagat ggaatttgca gccattgtta 120caaagtgctc
agctgacagg gatgactgta acaatcatat ctaatacctg cagttcaggc
180tcaggctttg cccaggtgaa gtttaacaga tcccctggtt ctggtcctgg
ttctcctaga 240tccgcggcgg attgtgctaa aggtaaaatt gagttttcca
agtataatga ggataatacc 300tttactgtga aggtgtcagg aagagaatac
tggacgaaca gatggaattt gcagccattg 360ttacaaagtg ctcagctgac
agggatgact gtaacaatca tatctaatac ctgcagttca 420ggctcaggct
ttgcccaggt gaagtttaac tga 45310150PRTArtificial SequenceDescription
of Artificial Sequence Synthetic polypeptide 10Ala Ala Asp Cys Ala
Lys Gly Lys Ile Glu Phe Ser Lys Tyr Asn Glu 1 5 10 15 Asp Asn Thr
Phe Thr Val Lys Val Ser Gly Arg Glu Tyr Trp Thr Asn 20 25 30 Arg
Trp Asn Leu Gln Pro Leu Leu Gln Ser Ala Gln Leu Thr Gly Met 35 40
45 Thr Val Thr Ile Ile Ser Asn Thr Cys Ser Ser Gly Ser Gly Phe Ala
50 55 60 Gln Val Lys Phe Asn Arg Ser Pro Gly Ser Gly Pro Gly Ser
Pro Arg 65 70 75 80 Ser Ala Ala Asp Cys Ala Lys Gly Lys Ile Glu Phe
Ser Lys Tyr Asn 85 90 95 Glu Asp Asn Thr Phe Thr Val Lys Val Ser
Gly Arg Glu Tyr Trp Thr 100 105 110 Asn Arg Trp Asn Leu Gln Pro Leu
Leu Gln Ser Ala Gln Leu Thr Gly 115 120 125 Met Thr Val Thr Ile Ile
Ser Asn Thr Cys Ser Ser Gly Ser Gly Phe 130 135 140 Ala Gln Val Lys
Phe Asn 145 150 11657DNAArtificial SequenceDescription of
Artificial Sequence Synthetic polynucleotide 11accccccaga
acatcaccga cctctgcgcc gagagccaca acacccaaat ctacaccctc 60aacgacaaga
ttttcagcta caccgagagc ctcgccggca agagggagat ggccatcatc
120accttcaaga acggcgccat cttccaggtc gaggtccccg gcagccagca
catcgacagc 180cagaagaagg ccatcgagag gatgaaggac accctcagga
tcgcctacct caccgaggcc 240aaggtcgaga agctctgcgt ctggaacaac
aagacccccc acgccatcgc cgccatcagc 300atggccaaca gatcccctgg
ttctggtcct ggttctccta gatccacccc ccagaacatc 360accgacctct
gcgccgagag ccacaacacc caaatctaca ccctcaacga caagattttc
420agctacaccg agagcctcgc cggcaagagg gagatggcca tcatcacctt
caagaacggc 480gccatcttcc aggtcgaggt ccccggcagc cagcacatcg
acagccagaa gaaggccatc 540gagaggatga aggacaccct caggatcgcc
tacctcaccg aggccaaggt cgagaagctc 600tgcgtctgga acaacaagac
cccccacgcc atcgccgcca tcagcatggc caactga 65712218PRTArtificial
SequenceDescription of Artificial Sequence Synthetic polypeptide
12Thr Pro Gln Asn Ile Thr Asp Leu Cys Ala Glu Ser His Asn Thr Gln 1
5 10 15 Ile Tyr Thr Leu Asn Asp Lys Ile Phe Ser Tyr Thr Glu Ser Leu
Ala 20 25 30 Gly Lys Arg Glu Met Ala Ile Ile Thr Phe Lys Asn Gly
Ala Ile Phe 35 40 45 Gln Val Glu Val Pro Gly Ser Gln His Ile Asp
Ser Gln Lys Lys Ala 50 55 60 Ile Glu Arg Met Lys Asp Thr Leu Arg
Ile Ala Tyr Leu Thr Glu Ala 65 70 75 80 Lys Val Glu Lys Leu Cys Val
Trp Asn Asn Lys Thr Pro His Ala Ile 85 90 95 Ala Ala Ile Ser Met
Ala Asn Arg Ser Pro Gly Ser Gly Pro Gly Ser 100 105 110 Pro Arg Ser
Thr Pro Gln Asn Ile Thr Asp Leu Cys Ala Glu Ser His 115 120 125 Asn
Thr Gln Ile Tyr Thr Leu Asn Asp Lys Ile Phe Ser Tyr Thr Glu 130 135
140 Ser Leu Ala Gly Lys Arg Glu Met Ala Ile Ile Thr Phe Lys Asn Gly
145 150 155 160 Ala Ile Phe Gln Val Glu Val Pro Gly Ser Gln His Ile
Asp Ser Gln 165 170 175 Lys Lys Ala Ile Glu Arg Met Lys Asp Thr Leu
Arg Ile Ala Tyr Leu 180 185 190 Thr Glu Ala Lys Val Glu Lys Leu Cys
Val Trp Asn Asn Lys Thr Pro 195 200 205 His Ala Ile Ala Ala Ile Ser
Met Ala Asn 210 215 13489DNAArtificial SequenceDescription of
Artificial Sequence Synthetic polynucleotide 13gcggcggatt
gtgctaaagg taaaattgag ttttccaagt ataatgagga taataccttt 60actgtgaagg
tgtcaggaag agaatactgg acgaacagat ggaatttgca gccattgtta
120caaagtgctc agctgacagg gatgactgta acaatcatat ctaatacctg
cagttcaggc 180tcaggctttg cccaggtgaa gtttaacaga tcccctggtt
ctggtcctgg ttctcctaga 240tccgcggcgg attgtgctaa aggtaaaatt
gagttttcca agtataatga ggataatacc 300tttactgtga aggtgtcagg
aagagaatac tggacgaaca gatggaattt gcagccattg 360ttacaaagtg
ctcagctgac agggatgact gtaacaatca tatctaatac ctgcagttca
420ggctcaggct ttgcccaggt gaagtttaac agatcccctg gttctggtcc
tggttctcct 480agatcttga 48914162PRTArtificial SequenceDescription
of Artificial Sequence Synthetic polypeptide 14Ala Ala Asp Cys Ala
Lys Gly Lys Ile Glu Phe Ser Lys Tyr Asn Glu 1 5 10 15 Asp Asn Thr
Phe Thr Val Lys Val Ser Gly Arg Glu Tyr Trp Thr Asn 20 25 30 Arg
Trp Asn Leu Gln Pro Leu Leu Gln Ser Ala Gln Leu Thr Gly Met 35 40
45 Thr Val Thr Ile Ile Ser Asn Thr Cys Ser Ser Gly Ser Gly Phe Ala
50 55 60 Gln Val Lys Phe Asn Arg Ser Pro Gly Ser Gly Pro Gly Ser
Pro Arg 65 70 75 80 Ser Ala Ala Asp Cys Ala Lys Gly Lys Ile Glu Phe
Ser Lys Tyr Asn 85 90 95 Glu Asp Asn Thr Phe Thr Val Lys Val Ser
Gly Arg Glu Tyr Trp Thr 100 105 110 Asn Arg Trp Asn Leu Gln Pro Leu
Leu Gln Ser Ala Gln Leu Thr Gly 115 120 125 Met Thr Val Thr Ile Ile
Ser Asn Thr Cys Ser Ser Gly Ser Gly Phe 130 135 140 Ala Gln Val Lys
Phe Asn Arg Ser Pro Gly Ser Gly Pro Gly Ser Pro 145 150 155 160 Arg
Ser 15693DNAArtificial SequenceDescription of Artificial Sequence
Synthetic polynucleotide 15accccccaga acatcaccga cctctgcgcc
gagagccaca acacccaaat ctacaccctc 60aacgacaaga ttttcagcta caccgagagc
ctcgccggca agagggagat ggccatcatc 120accttcaaga acggcgccat
cttccaggtc gaggtccccg gcagccagca catcgacagc 180cagaagaagg
ccatcgagag gatgaaggac accctcagga tcgcctacct caccgaggcc
240aaggtcgaga agctctgcgt ctggaacaac aagacccccc acgccatcgc
cgccatcagc 300atggccaaca gatcccctgg ttctggtcct ggttctccta
gatccacccc ccagaacatc 360accgacctct gcgccgagag ccacaacacc
caaatctaca ccctcaacga caagattttc 420agctacaccg agagcctcgc
cggcaagagg gagatggcca tcatcacctt caagaacggc 480gccatcttcc
aggtcgaggt ccccggcagc cagcacatcg acagccagaa gaaggccatc
540gagaggatga aggacaccct caggatcgcc tacctcaccg aggccaaggt
cgagaagctc 600tgcgtctgga acaacaagac cccccacgcc atcgccgcca
tcagcatggc caacagatcc 660cctggttctg gtcctggttc tcctagatct tga
69316230PRTArtificial SequenceDescription of Artificial Sequence
Synthetic polypeptide 16Thr Pro Gln Asn Ile Thr Asp Leu Cys Ala Glu
Ser His Asn Thr Gln 1 5 10 15 Ile Tyr Thr Leu Asn Asp Lys Ile Phe
Ser Tyr Thr Glu Ser Leu Ala 20 25 30 Gly Lys Arg Glu Met Ala Ile
Ile Thr Phe Lys Asn Gly Ala Ile Phe 35 40 45 Gln Val Glu Val Pro
Gly Ser Gln His Ile Asp Ser Gln Lys Lys Ala 50 55 60 Ile Glu Arg
Met Lys Asp Thr Leu Arg Ile Ala Tyr Leu Thr Glu Ala 65 70 75 80 Lys
Val Glu Lys Leu Cys Val Trp Asn Asn Lys Thr Pro His Ala Ile 85 90
95 Ala Ala Ile Ser Met Ala Asn Arg Ser Pro Gly Ser Gly Pro Gly Ser
100 105 110 Pro Arg Ser Thr Pro Gln Asn Ile Thr Asp Leu Cys Ala Glu
Ser His 115 120 125 Asn Thr Gln Ile Tyr Thr Leu Asn Asp Lys Ile Phe
Ser Tyr Thr Glu 130 135 140 Ser Leu Ala Gly Lys Arg Glu Met Ala Ile
Ile Thr Phe Lys Asn Gly 145 150 155 160 Ala Ile Phe Gln Val Glu Val
Pro Gly Ser Gln His Ile Asp Ser Gln 165 170 175 Lys Lys Ala Ile Glu
Arg Met Lys Asp Thr Leu Arg Ile Ala Tyr Leu 180 185 190 Thr Glu Ala
Lys Val Glu Lys Leu Cys Val Trp Asn Asn Lys Thr Pro 195 200 205 His
Ala Ile Ala Ala Ile Ser Met Ala Asn Arg Ser Pro Gly Ser Gly 210 215
220 Pro Gly Ser Pro Arg Ser 225 230 1772DNANicotiana tabacum
17atggggagaa tgtcaatacc catgatgggt tttgtggtgt tatgtctatg ggcagtggta
60gcagaaggat cc 721824PRTNicotiana tabacum 18Met Gly Arg Met Ser
Ile Pro Met Met Gly Phe Val Val Leu Cys Leu 1 5 10 15 Trp Ala Val
Val Ala Glu Gly Ser 20 194PRTArtificial SequenceDescription of
Artificial Sequence Synthetic peptide 19Lys Asp Glu Leu 1
204PRTArtificial SequenceDescription of Artificial Sequence
Synthetic peptide 20His Asp Glu Leu 1 214PRTArtificial
SequenceDescription of Artificial Sequence Synthetic peptide 21Lys
Asp Glu Phe 1 224PRTArtificial SequenceDescription of Artificial
Sequence Synthetic peptide 22His Asp Glu Phe 1 2391DNANicotiana
tabacum 23tatttaactc agtattcaga aacaacaaaa gttcttctct acataaaatt
ttcctatttt 60agtgatcagt gaaggaaatc aagaaaaata a
9124547DNAArtificial SequenceDescription of Artificial Sequence
Synthetic polynucleotide 24tatttaactc agtattcaga aacaacaaaa
gttcttctct acataaaatt ttcctatttt 60agtgatcagt gaaggaaatc aagaaaaata
aatggcggcg gattgtgcta aaggtaaaat 120tgagttttcc aagtataatg
aggataatac ctttactgtg aaggtgtcag gaagagaata 180ctggacgaac
agatggaatt tgcagccatt gttacaaagt gctcagctga cagggatgac
240tgtaacaatc atatctaata cctgcagttc aggctcaggc tttgcccagg
tgaagtttaa 300cagatcccct ggttctggtc ctggttctcc tagatccgcg
gcggattgtg ctaaaggtaa 360aattgagttt tccaagtata atgaggataa
tacctttact gtgaaggtgt caggaagaga 420atactggacg aacagatgga
atttgcagcc attgttacaa agtgctcagc tgacagggat 480gactgtaaca
atcatatcta atacctgcag ttcaggctca ggctttgccc aggtgaagtt 540taactga
54725751DNAArtificial SequenceDescription of Artificial Sequence
Synthetic polynucleotide 25tatttaactc agtattcaga aacaacaaaa
gttcttctct acataaaatt ttcctatttt 60agtgatcagt gaaggaaatc aagaaaaata
aatgaccccc cagaacatca ccgacctctg 120cgccgagagc cacaacaccc
aaatctacac cctcaacgac aagattttca gctacaccga 180gagcctcgcc
ggcaagaggg agatggccat catcaccttc aagaacggcg ccatcttcca
240ggtcgaggtc cccggcagcc agcacatcga cagccagaag aaggccatcg
agaggatgaa 300ggacaccctc aggatcgcct
acctcaccga ggccaaggtc gagaagctct gcgtctggaa 360caacaagacc
ccccacgcca tcgccgccat cagcatggcc aacagatccc ctggttctgg
420tcctggttct cctagatcca ccccccagaa catcaccgac ctctgcgccg
agagccacaa 480cacccaaatc tacaccctca acgacaagat tttcagctac
accgagagcc tcgccggcaa 540gagggagatg gccatcatca ccttcaagaa
cggcgccatc ttccaggtcg aggtccccgg 600cagccagcac atcgacagcc
agaagaaggc catcgagagg atgaaggaca ccctcaggat 660cgcctacctc
accgaggcca aggtcgagaa gctctgcgtc tggaacaaca agacccccca
720cgccatcgcc gccatcagca tggccaactg a 75126637DNAArtificial
SequenceDescription of Artificial Sequence Synthetic polynucleotide
26tatttaactc agtattcaga aacaacaaaa gttcttctct acataaaatt ttcctatttt
60agtgatcagt gaaggaaatc aagaaaaata aatggggaga atgtcaatac ccatgatggg
120ttttgtggtg ttatgtctat gggcagtggt agcagaagga tccgcggcgg
attgtgctaa 180aggtaaaatt gagttttcca agtataatga ggataatacc
tttactgtga aggtgtcagg 240aagagaatac tggacgaaca gatggaattt
gcagccattg ttacaaagtg ctcagctgac 300agggatgact gtaacaatca
tatctaatac ctgcagttca ggctcaggct ttgcccaggt 360gaagtttaac
agatcccctg gttctggtcc tggttctcct agatccgcgg cggattgtgc
420taaaggtaaa attgagtttt ccaagtataa tgaggataat acctttactg
tgaaggtgtc 480aggaagagaa tactggacga acagatggaa tttgcagcca
ttgttacaaa gtgctcagct 540gacagggatg actgtaacaa tcatatctaa
tacctgcagt tcaggctcag gctttgccca 600ggtgaagttt aacagatctg
aacatgatga attgtga 63727841DNAArtificial SequenceDescription of
Artificial Sequence Synthetic polynucleotide 27tatttaactc
agtattcaga aacaacaaaa gttcttctct acataaaatt ttcctatttt 60agtgatcagt
gaaggaaatc aagaaaaata aatggggaga atgtcaatac ccatgatggg
120ttttgtggtg ttatgtctat gggcagtggt agcagaagga tccacccccc
agaacatcac 180cgacctctgc gccgagagcc acaacaccca aatctacacc
ctcaacgaca agattttcag 240ctacaccgag agcctcgccg gcaagaggga
gatggccatc atcaccttca agaacggcgc 300catcttccag gtcgaggtcc
ccggcagcca gcacatcgac agccagaaga aggccatcga 360gaggatgaag
gacaccctca ggatcgccta cctcaccgag gccaaggtcg agaagctctg
420cgtctggaac aacaagaccc cccacgccat cgccgccatc agcatggcca
acagatcccc 480tggttctggt cctggttctc ctagatccac cccccagaac
atcaccgacc tctgcgccga 540gagccacaac acccaaatct acaccctcaa
cgacaagatt ttcagctaca ccgagagcct 600cgccggcaag agggagatgg
ccatcatcac cttcaagaac ggcgccatct tccaggtcga 660ggtccccggc
agccagcaca tcgacagcca gaagaaggcc atcgagagga tgaaggacac
720cctcaggatc gcctacctca ccgaggccaa ggtcgagaag ctctgcgtct
ggaacaacaa 780gaccccccac gccatcgccg ccatcagcat ggccaacaga
tctgaacatg atgaattgtg 840a 84128667DNAArtificial
SequenceDescription of Artificial Sequence Synthetic polynucleotide
28tatttaactc agtattcaga aacaacaaaa gttcttctct acataaaatt ttcctatttt
60agtgatcagt gaaggaaatc aagaaaaata aatggggaga atgtcaatac ccatgatggg
120ttttgtggtg ttatgtctat gggcagtggt agcagaagga tccgcggcgg
attgtgctaa 180aggtaaaatt gagttttcca agtataatga ggataatacc
tttactgtga aggtgtcagg 240aagagaatac tggacgaaca gatggaattt
gcagccattg ttacaaagtg ctcagctgac 300agggatgact gtaacaatca
tatctaatac ctgcagttca ggctcaggct ttgcccaggt 360gaagtttaac
agatcccctg gttctggtcc tggttctcct agatccgcgg cggattgtgc
420taaaggtaaa attgagtttt ccaagtataa tgaggataat acctttactg
tgaaggtgtc 480aggaagagaa tactggacga acagatggaa tttgcagcca
ttgttacaaa gtgctcagct 540gacagggatg actgtaacaa tcatatctaa
tacctgcagt tcaggctcag gctttgccca 600ggtgaagttt aacagatccc
ctggttctgg tcctggttct cctagatctg aacatgatga 660attgtga
66729871DNAArtificial SequenceDescription of Artificial Sequence
Synthetic polynucleotide 29tatttaactc agtattcaga aacaacaaaa
gttcttctct acataaaatt ttcctatttt 60agtgatcagt gaaggaaatc aagaaaaata
aatggggaga atgtcaatac ccatgatggg 120ttttgtggtg ttatgtctat
gggcagtggt agcagaagga tccacccccc agaacatcac 180cgacctctgc
gccgagagcc acaacaccca aatctacacc ctcaacgaca agattttcag
240ctacaccgag agcctcgccg gcaagaggga gatggccatc atcaccttca
agaacggcgc 300catcttccag gtcgaggtcc ccggcagcca gcacatcgac
agccagaaga aggccatcga 360gaggatgaag gacaccctca ggatcgccta
cctcaccgag gccaaggtcg agaagctctg 420cgtctggaac aacaagaccc
cccacgccat cgccgccatc agcatggcca acagatcccc 480tggttctggt
cctggttctc ctagatccac cccccagaac atcaccgacc tctgcgccga
540gagccacaac acccaaatct acaccctcaa cgacaagatt ttcagctaca
ccgagagcct 600cgccggcaag agggagatgg ccatcatcac cttcaagaac
ggcgccatct tccaggtcga 660ggtccccggc agccagcaca tcgacagcca
gaagaaggcc atcgagagga tgaaggacac 720cctcaggatc gcctacctca
ccgaggccaa ggtcgagaag ctctgcgtct ggaacaacaa 780gaccccccac
gccatcgccg ccatcagcat ggccaacaga tcccctggtt ctggtcctgg
840ttctcctaga tctgaacatg atgaattgtg a 8713038DNAArtificial
SequenceDescription of Artificial Sequence Synthetic primer
30tatctagagc caccatggga tccgcggcgg attgtgct 383130DNAArtificial
SequenceDescription of Artificial Sequence Synthetic primer
31ttcaagatct gttaaacttc acctgggcaa 303223DNAArtificial
SequenceDescription of Artificial Sequence Synthetic primer
32gtcgacggta cccccgggga gct 233323DNAArtificial SequenceDescription
of Artificial Sequence Synthetic primer 33ccccgggggt accgtcgaca gct
233441DNAArtificial SequenceDescription of Artificial Sequence
Synthetic primer 34aatctagagt ctatttaact cagtattcag aaacaacaaa a
413530DNAArtificial SequenceDescription of Artificial Sequence
Synthetic primer 35aaatgcatta tttttcttga tttccttcac
303630DNAArtificial SequenceDescription of Artificial Sequence
Synthetic primer 36aaatgcatgg ggagaatgtc aatacccatg
303730DNAArtificial SequenceDescription of Artificial Sequence
Synthetic primer 37tataggatcc cattattttt cttgatttcc
30387PRTArtificial SequenceDescription of Artificial Sequence
Synthetic peptide 38Gly Ser Glu His Asp Glu Leu 1 5
3921DNAArtificial SequenceDescription of Artificial Sequence
Synthetic primer 39gatctgaaca tgatgaattg t 214021DNAArtificial
SequenceDescription of Artificial Sequence Synthetic primer
40gatcacaatt catcatgttc a 214133DNAArtificial SequenceDescription
of Artificial Sequence Synthetic primer 41gatcttatcc ttatgattat
cctgattatg ctg 334233DNAArtificial SequenceDescription of
Artificial Sequence Synthetic primer 42gatccagcat aatcaggata
atcataagga taa 334330DNAArtificial SequenceDescription of
Artificial Sequence Synthetic primer 43gatcccctgg ttctggtcct
ggttctccta 304430DNAArtificial SequenceDescription of Artificial
Sequence Synthetic primer 44gatctaggag aaccaggacc agaaccaggg
304540DNAArtificial SequenceDescription of Artificial Sequence
Synthetic primer 45ttggatccac cccccagaac atcaccgacc tctgcgccga
404639DNAArtificial SequenceDescription of Artificial Sequence
Synthetic primer 46cgttgagggt gtagatttgg gtgttgtggc tctcggcgc
394740DNAArtificial SequenceDescription of Artificial Sequence
Synthetic primer 47ccctcaacga caagattttc agctacaccg agagcctcgc
404840DNAArtificial SequenceDescription of Artificial Sequence
Synthetic primer 48cttgaaggtg atgatggcca tctccctctt gccggcgagg
404932DNAArtificial SequenceDescription of Artificial Sequence
Synthetic primer 49caccttcaag aacggcgcca tcttccaggt cg
325045DNAArtificial SequenceDescription of Artificial Sequence
Synthetic primer 50cttctggctg tcgatgtgct ggctgccggg gacctcgacc
tggaa 455145DNAArtificial SequenceDescription of Artificial
Sequence Synthetic primer 51agccagaaga aggccatcga gaggatgaag
gacaccctca ggatc 455243DNAArtificial SequenceDescription of
Artificial Sequence Synthetic primer 52gcagagcttc tcgaccttgg
cctcggtgag gtaggcgatc ctg 435330DNAArtificial SequenceDescription
of Artificial Sequence Synthetic primer 53aagctctgcg tctggaacaa
caagaccccc 305445DNAArtificial SequenceDescription of Artificial
Sequence Synthetic primer 54aaagatctgt tggccatgct gatggcggcg
atggcgtggg gggtc 455531DNAArtificial SequenceDescription of
Artificial Sequence Synthetic primer 55tttggatcca gcaagggcga
ggagctgttc a 315633DNAArtificial SequenceDescription of Artificial
Sequence Synthetic primer 56tttagatctc ttgtacagct cgtccatgcc gag
335730DNAArtificial SequenceDescription of Artificial Sequence
Synthetic primer 57aaaggatccg cctcctccga ggacgtcatc
305830DNAArtificial SequenceDescription of Artificial Sequence
Synthetic primer 58aaaagatctg gcgccggtgg agtggcggcc
305930DNAArtificial SequenceDescription of Artificial Sequence
Synthetic primer 59gatcaaaatg gggttgtcat tcggaaagtt
306030DNAArtificial SequenceDescription of Artificial Sequence
Synthetic primer 60attccatcta tgccttgctt gcgatgttgt
306124DNAArtificial SequenceDescription of Artificial Sequence
Synthetic primer 61ctagacaaga tccgtccatt gtgg 246224DNAArtificial
SequenceDescription of Artificial Sequence Synthetic primer
62acccccaaca tcccacacgg tgaa 24637PRTArtificial SequenceDescription
of Artificial Sequence Synthetic peptide 63Arg Ser Pro Gly Ser Arg
Ser 1 5 6412PRTArtificial SequenceDescription of Artificial
Sequence Synthetic peptide 64Arg Ser Gly Ser Gly Ser Gly Ser Gly
Ser Arg Ser 1 5 10 6515DNAArtificial SequenceDescription of
Artificial Sequence Synthetic primer 65gatcccctgg ttcca
156615DNAArtificial SequenceDescription of Artificial Sequence
Synthetic primer 66gatctggaac caggg 156730DNAArtificial
SequenceDescription of Artificial Sequence Synthetic primer
67gatccggttc tggttctggt tctggttcca 306830DNAArtificial
SequenceDescription of Artificial Sequence Synthetic primer
68gatctggaac cagaaccaga accagaaccg 306925DNAArtificial
SequenceDescription of Artificial Sequence Synthetic primer
69gtgatcagtg aaggaaatca agaaa 257023DNAArtificial
SequenceDescription of Artificial Sequence Synthetic primer
70cataacacca caaaacccat cat 237122DNAArtificial SequenceDescription
of Artificial Sequence Synthetic primer 71ccaagccaaa gaagatcaag ca
227224DNAArtificial SequenceDescription of Artificial Sequence
Synthetic primer 72ccctgaatca tcgaccttgt agaa 2473700DNAArtificial
SequenceDescription of Artificial Sequence Synthetic polynucleotide
73tatttaactc agtattcaga aacaacaaaa gttcttctct acataaaatt ttcctatttt
60agtgatcagt gaaggaaatc aagaaaaata aatggggaga atgtcaatac ccatgatggg
120ttttgtggtg ttatgtctat gggcagtggt agcagaagga tccgcggcgg
attgtgctaa 180aggtaaaatt gagttttcca agtataatga ggataatacc
tttactgtga aggtgtcagg 240aagagaatac tggacgaaca gatggaattt
gcagccattg ttacaaagtg ctcagctgac 300agggatgact gtaacaatca
tatctaatac ctgcagttca ggctcaggct ttgcccaggt 360gaagtttaac
agatcccctg gttctggtcc tggttctcct agatccgcgg cggattgtgc
420taaaggtaaa attgagtttt ccaagtataa tgaggataat acctttactg
tgaaggtgtc 480aggaagagaa tactggacga acagatggaa tttgcagcca
ttgttacaaa gtgctcagct 540gacagggatg actgtaacaa tcatatctaa
tacctgcagt tcaggctcag gctttgccca 600ggtgaagttt aacagatccc
ctggttctgg tcctggttct cctagatctt atccttatga 660ttatcctgat
tatgctggat ctgaacatga tgaattgtga 70074904DNAArtificial
SequenceDescription of Artificial Sequence Synthetic polynucleotide
74tatttaactc agtattcaga aacaacaaaa gttcttctct acataaaatt ttcctatttt
60agtgatcagt gaaggaaatc aagaaaaata aatggggaga atgtcaatac ccatgatggg
120ttttgtggtg ttatgtctat gggcagtggt agcagaagga tccacccccc
agaacatcac 180cgacctctgc gccgagagcc acaacaccca aatctacacc
ctcaacgaca agattttcag 240ctacaccgag agcctcgccg gcaagaggga
gatggccatc atcaccttca agaacggcgc 300catcttccag gtcgaggtcc
ccggcagcca gcacatcgac agccagaaga aggccatcga 360gaggatgaag
gacaccctca ggatcgccta cctcaccgag gccaaggtcg agaagctctg
420cgtctggaac aacaagaccc cccacgccat cgccgccatc agcatggcca
acagatcccc 480tggttctggt cctggttctc ctagatccac cccccagaac
atcaccgacc tctgcgccga 540gagccacaac acccaaatct acaccctcaa
cgacaagatt ttcagctaca ccgagagcct 600cgccggcaag agggagatgg
ccatcatcac cttcaagaac ggcgccatct tccaggtcga 660ggtccccggc
agccagcaca tcgacagcca gaagaaggcc atcgagagga tgaaggacac
720cctcaggatc gcctacctca ccgaggccaa ggtcgagaag ctctgcgtct
ggaacaacaa 780gaccccccac gccatcgccg ccatcagcat ggccaacaga
tcccctggtt ctggtcctgg 840ttctcctaga tcttatcctt atgattatcc
tgattatgct ggatctgaac atgatgaatt 900gtga 9047521DNANicotiana
tabacum 75gatttgttgg ttgatactat g 21767PRTNicotiana tabacum 76Asp
Leu Leu Val Asp Thr Met 1 5 7745DNAArmoracia rusticana 77ctactccatg
atatggtgga ggtcgttgac tttgttagct ctatg 457815PRTArmoracia rusticana
78Leu Leu His Asp Met Val Glu Val Val Asp Phe Val Ser Ser Met 1 5
10 15 7975PRTLactuca sativa 79Met Ala Ser Ile Ser Ser Ser Ala Ile
Ala Thr Val Asn Arg Thr Thr 1 5 10 15 Ser Thr Gln Ala Ser Leu Ala
Ala Pro Phe Thr Gly Leu Lys Ser Asn 20 25 30 Val Ala Phe Pro Val
Thr Lys Lys Ala Asn Asn Asp Phe Ser Ser Leu 35 40 45 Pro Ser Asn
Gly Gly Arg Val Gln Cys Met Lys Val Trp Pro Pro Ile 50 55 60 Gly
Leu Lys Lys Tyr Glu Thr Leu Ser Tyr Leu 65 70 75 80225DNALactuca
sativa 80atggcctcca tctcctcctc agccatcgcc accgtcaacc ggaccacctc
cacccaagct 60agcttggcag ctccattcac cggcctcaag tctaacgtag ctttcccagt
taccaagaag 120gctaacaatg acttttcatc cctacccagc aacggtggaa
gagtacaatg catgaaggtg 180tggccaccaa ttgggttgaa gaagtacgag
actctttcat accta 2258151DNAArtificial SequenceDescription of
Artificial Sequence Synthetic oligonucleotide 81agatcccctg
gttctggtcc tggttctcct agatcccctg gttccagatc t 518217PRTArtificial
SequenceDescription of Artificial Sequence Synthetic peptide 82Arg
Ser Pro Gly Ser Gly Pro Gly Ser Pro Arg Ser Pro Gly Ser Arg 1 5 10
15 Ser 8366DNAArtificial SequenceDescription of Artificial Sequence
Synthetic oligonucleotide 83agatcccctg gttctggtcc tggttctcct
agatcccctg gttctggtcc tggttctcct 60agatct 668422PRTArtificial
SequenceDescription of Artificial Sequence Synthetic peptide 84Arg
Ser Pro Gly Ser Gly Pro Gly Ser Pro Arg Ser Pro Gly Ser Gly 1 5 10
15 Pro Gly Ser Pro Arg Ser 20 85696DNAArtificial
SequenceDescription of Artificial Sequence Synthetic polynucleotide
85gcggcggatt gtgctaaagg taaaattgag ttttccaagt ataatgagga taataccttt
60actgtgaagg tgtcaggaag agaatactgg acgaacagat ggaatttgca gccattgtta
120caaagtgctc agctgacagg gatgactgta acaatcatat ctaatacctg
cagttcaggc 180tcaggctttg cccaggtgaa gtttaacaga tcccctggtt
ctggtcctgg ttctcctaga 240tccgcggcgg attgtgctaa aggtaaaatt
gagttttcca agtataatga ggataatacc 300tttactgtga aggtgtcagg
aagagaatac tggacgaaca gatggaattt gcagccattg 360ttacaaagtg
ctcagctgac agggatgact gtaacaatca tatctaatac ctgcagttca
420ggctcaggct ttgcccaggt gaagtttaac agatcccctg gttctggtcc
tggttctcct 480agatccgcgg cggattgtgc taaaggtaaa attgagtttt
ccaagtataa tgaggataat 540acctttactg tgaaggtgtc aggaagagaa
tactggacga acagatggaa tttgcagcca 600ttgttacaaa gtgctcagct
gacagggatg actgtaacaa tcatatctaa tacctgcagt 660tcaggctcag
gctttgccca ggtgaagttt aactga 69686231PRTArtificial
SequenceDescription of Artificial Sequence Synthetic polypeptide
86Ala Ala Asp Cys Ala Lys Gly Lys Ile Glu Phe Ser Lys Tyr Asn Glu 1
5 10 15 Asp Asn Thr Phe Thr Val Lys Val Ser Gly Arg Glu Tyr Trp Thr
Asn 20 25 30 Arg Trp Asn Leu Gln Pro Leu Leu Gln Ser Ala Gln Leu
Thr Gly Met 35 40 45 Thr Val Thr Ile Ile Ser Asn Thr Cys Ser Ser
Gly Ser Gly Phe Ala 50 55 60 Gln Val Lys Phe Asn Arg Ser Pro Gly
Ser Gly Pro Gly Ser Pro Arg 65 70 75 80 Ser Ala Ala Asp Cys Ala Lys
Gly Lys Ile Glu Phe Ser Lys Tyr Asn 85 90 95 Glu Asp Asn Thr Phe
Thr Val Lys Val Ser Gly Arg Glu Tyr Trp Thr 100 105 110 Asn Arg Trp
Asn Leu Gln Pro Leu
Leu Gln Ser Ala Gln Leu Thr Gly 115 120 125 Met Thr Val Thr Ile Ile
Ser Asn Thr Cys Ser Ser Gly Ser Gly Phe 130 135 140 Ala Gln Val Lys
Phe Asn Arg Ser Pro Gly Ser Gly Pro Gly Ser Pro 145 150 155 160 Arg
Ser Ala Ala Asp Cys Ala Lys Gly Lys Ile Glu Phe Ser Lys Tyr 165 170
175 Asn Glu Asp Asn Thr Phe Thr Val Lys Val Ser Gly Arg Glu Tyr Trp
180 185 190 Thr Asn Arg Trp Asn Leu Gln Pro Leu Leu Gln Ser Ala Gln
Leu Thr 195 200 205 Gly Met Thr Val Thr Ile Ile Ser Asn Thr Cys Ser
Ser Gly Ser Gly 210 215 220 Phe Ala Gln Val Lys Phe Asn 225 230
87732DNAArtificial SequenceDescription of Artificial Sequence
Synthetic polynucleotide 87gcggcggatt gtgctaaagg taaaattgag
ttttccaagt ataatgagga taataccttt 60actgtgaagg tgtcaggaag agaatactgg
acgaacagat ggaatttgca gccattgtta 120caaagtgctc agctgacagg
gatgactgta acaatcatat ctaatacctg cagttcaggc 180tcaggctttg
cccaggtgaa gtttaacaga tcccctggtt ctggtcctgg ttctcctaga
240tccgcggcgg attgtgctaa aggtaaaatt gagttttcca agtataatga
ggataatacc 300tttactgtga aggtgtcagg aagagaatac tggacgaaca
gatggaattt gcagccattg 360ttacaaagtg ctcagctgac agggatgact
gtaacaatca tatctaatac ctgcagttca 420ggctcaggct ttgcccaggt
gaagtttaac agatcccctg gttctggtcc tggttctcct 480agatccgcgg
cggattgtgc taaaggtaaa attgagtttt ccaagtataa tgaggataat
540acctttactg tgaaggtgtc aggaagagaa tactggacga acagatggaa
tttgcagcca 600ttgttacaaa gtgctcagct gacagggatg actgtaacaa
tcatatctaa tacctgcagt 660tcaggctcag gctttgccca ggtgaagttt
aacagatccc ctggttctgg tcctggttct 720cctagatcct ga
73288243PRTArtificial SequenceDescription of Artificial Sequence
Synthetic polypeptide 88Ala Ala Asp Cys Ala Lys Gly Lys Ile Glu Phe
Ser Lys Tyr Asn Glu 1 5 10 15 Asp Asn Thr Phe Thr Val Lys Val Ser
Gly Arg Glu Tyr Trp Thr Asn 20 25 30 Arg Trp Asn Leu Gln Pro Leu
Leu Gln Ser Ala Gln Leu Thr Gly Met 35 40 45 Thr Val Thr Ile Ile
Ser Asn Thr Cys Ser Ser Gly Ser Gly Phe Ala 50 55 60 Gln Val Lys
Phe Asn Arg Ser Pro Gly Ser Gly Pro Gly Ser Pro Arg 65 70 75 80 Ser
Ala Ala Asp Cys Ala Lys Gly Lys Ile Glu Phe Ser Lys Tyr Asn 85 90
95 Glu Asp Asn Thr Phe Thr Val Lys Val Ser Gly Arg Glu Tyr Trp Thr
100 105 110 Asn Arg Trp Asn Leu Gln Pro Leu Leu Gln Ser Ala Gln Leu
Thr Gly 115 120 125 Met Thr Val Thr Ile Ile Ser Asn Thr Cys Ser Ser
Gly Ser Gly Phe 130 135 140 Ala Gln Val Lys Phe Asn Arg Ser Pro Gly
Ser Gly Pro Gly Ser Pro 145 150 155 160 Arg Ser Ala Ala Asp Cys Ala
Lys Gly Lys Ile Glu Phe Ser Lys Tyr 165 170 175 Asn Glu Asp Asn Thr
Phe Thr Val Lys Val Ser Gly Arg Glu Tyr Trp 180 185 190 Thr Asn Arg
Trp Asn Leu Gln Pro Leu Leu Gln Ser Ala Gln Leu Thr 195 200 205 Gly
Met Thr Val Thr Ile Ile Ser Asn Thr Cys Ser Ser Gly Ser Gly 210 215
220 Phe Ala Gln Val Lys Phe Asn Arg Ser Pro Gly Ser Gly Pro Gly Ser
225 230 235 240 Pro Arg Ser 89504DNAArtificial SequenceDescription
of Artificial Sequence Synthetic polynucleotide 89gcggcggatt
gtgctaaagg taaaattgag ttttccaagt ataatgagga taataccttt 60actgtgaagg
tgtcaggaag agaatactgg acgaacagat ggaatttgca gccattgtta
120caaagtgctc agctgacagg gatgactgta acaatcatat ctaatacctg
cagttcaggc 180tcaggctttg cccaggtgaa gtttaacaga tcccctggtt
ctggtcctgg ttctcctaga 240tcccctggtt ccagatctgc ggcggattgt
gctaaaggta aaattgagtt ttccaagtat 300aatgaggata atacctttac
tgtgaaggtg tcaggaagag aatactggac gaacagatgg 360aatttgcagc
cattgttaca aagtgctcag ctgacaggga tgactgtaac aatcatatct
420aatacctgca gttcaggctc aggctttgcc caggtgaagt ttaacagatc
ccctggttct 480ggtcctggtt ctcctagatc ttga 50490167PRTArtificial
SequenceDescription of Artificial Sequence Synthetic polypeptide
90Ala Ala Asp Cys Ala Lys Gly Lys Ile Glu Phe Ser Lys Tyr Asn Glu 1
5 10 15 Asp Asn Thr Phe Thr Val Lys Val Ser Gly Arg Glu Tyr Trp Thr
Asn 20 25 30 Arg Trp Asn Leu Gln Pro Leu Leu Gln Ser Ala Gln Leu
Thr Gly Met 35 40 45 Thr Val Thr Ile Ile Ser Asn Thr Cys Ser Ser
Gly Ser Gly Phe Ala 50 55 60 Gln Val Lys Phe Asn Arg Ser Pro Gly
Ser Gly Pro Gly Ser Pro Arg 65 70 75 80 Ser Pro Gly Ser Arg Ser Ala
Ala Asp Cys Ala Lys Gly Lys Ile Glu 85 90 95 Phe Ser Lys Tyr Asn
Glu Asp Asn Thr Phe Thr Val Lys Val Ser Gly 100 105 110 Arg Glu Tyr
Trp Thr Asn Arg Trp Asn Leu Gln Pro Leu Leu Gln Ser 115 120 125 Ala
Gln Leu Thr Gly Met Thr Val Thr Ile Ile Ser Asn Thr Cys Ser 130 135
140 Ser Gly Ser Gly Phe Ala Gln Val Lys Phe Asn Arg Ser Pro Gly Ser
145 150 155 160 Gly Pro Gly Ser Pro Arg Ser 165 91519DNAArtificial
SequenceDescription of Artificial Sequence Synthetic polynucleotide
91gcggcggatt gtgctaaagg taaaattgag ttttccaagt ataatgagga taataccttt
60actgtgaagg tgtcaggaag agaatactgg acgaacagat ggaatttgca gccattgtta
120caaagtgctc agctgacagg gatgactgta acaatcatat ctaatacctg
cagttcaggc 180tcaggctttg cccaggtgaa gtttaacaga tcccctggtt
ctggtcctgg ttctcctaga 240tcccctggtt ctggtcctgg ttctcctaga
tctgcggcgg attgtgctaa aggtaaaatt 300gagttttcca agtataatga
ggataatacc tttactgtga aggtgtcagg aagagaatac 360tggacgaaca
gatggaattt gcagccattg ttacaaagtg ctcagctgac agggatgact
420gtaacaatca tatctaatac ctgcagttca ggctcaggct ttgcccaggt
gaagtttaac 480agatcccctg gttctggtcc tggttctcct agatcttga
51992172PRTArtificial SequenceDescription of Artificial Sequence
Synthetic polypeptide 92Ala Ala Asp Cys Ala Lys Gly Lys Ile Glu Phe
Ser Lys Tyr Asn Glu 1 5 10 15 Asp Asn Thr Phe Thr Val Lys Val Ser
Gly Arg Glu Tyr Trp Thr Asn 20 25 30 Arg Trp Asn Leu Gln Pro Leu
Leu Gln Ser Ala Gln Leu Thr Gly Met 35 40 45 Thr Val Thr Ile Ile
Ser Asn Thr Cys Ser Ser Gly Ser Gly Phe Ala 50 55 60 Gln Val Lys
Phe Asn Arg Ser Pro Gly Ser Gly Pro Gly Ser Pro Arg 65 70 75 80 Ser
Pro Gly Ser Gly Pro Gly Ser Pro Arg Ser Ala Ala Asp Cys Ala 85 90
95 Lys Gly Lys Ile Glu Phe Ser Lys Tyr Asn Glu Asp Asn Thr Phe Thr
100 105 110 Val Lys Val Ser Gly Arg Glu Tyr Trp Thr Asn Arg Trp Asn
Leu Gln 115 120 125 Pro Leu Leu Gln Ser Ala Gln Leu Thr Gly Met Thr
Val Thr Ile Ile 130 135 140 Ser Asn Thr Cys Ser Ser Gly Ser Gly Phe
Ala Gln Val Lys Phe Asn 145 150 155 160 Arg Ser Pro Gly Ser Gly Pro
Gly Ser Pro Arg Ser 165 170 931002DNAArtificial SequenceDescription
of Artificial Sequence Synthetic polynucleotide 93accccccaga
acatcaccga cctctgcgcc gagagccaca acacccaaat ctacaccctc 60aacgacaaga
ttttcagcta caccgagagc ctcgccggca agagggagat ggccatcatc
120accttcaaga acggcgccat cttccaggtc gaggtccccg gcagccagca
catcgacagc 180cagaagaagg ccatcgagag gatgaaggac accctcagga
tcgcctacct caccgaggcc 240aaggtcgaga agctctgcgt ctggaacaac
aagacccccc acgccatcgc cgccatcagc 300atggccaaca gatcccctgg
ttctggtcct ggttctccta gatccacccc ccagaacatc 360accgacctct
gcgccgagag ccacaacacc caaatctaca ccctcaacga caagattttc
420agctacaccg agagcctcgc cggcaagagg gagatggcca tcatcacctt
caagaacggc 480gccatcttcc aggtcgaggt ccccggcagc cagcacatcg
acagccagaa gaaggccatc 540gagaggatga aggacaccct caggatcgcc
tacctcaccg aggccaaggt cgagaagctc 600tgcgtctgga acaacaagac
cccccacgcc atcgccgcca tcagcatggc caacagatcc 660cctggttctg
gtcctggttc tcctagatcc accccccaga acatcaccga cctctgcgcc
720gagagccaca acacccaaat ctacaccctc aacgacaaga ttttcagcta
caccgagagc 780ctcgccggca agagggagat ggccatcatc accttcaaga
acggcgccat cttccaggtc 840gaggtccccg gcagccagca catcgacagc
cagaagaagg ccatcgagag gatgaaggac 900accctcagga tcgcctacct
caccgaggcc aaggtcgaga agctctgcgt ctggaacaac 960aagacccccc
acgccatcgc cgccatcagc atggccaact ga 100294333PRTArtificial
SequenceDescription of Artificial Sequence Synthetic polypeptide
94Thr Pro Gln Asn Ile Thr Asp Leu Cys Ala Glu Ser His Asn Thr Gln 1
5 10 15 Ile Tyr Thr Leu Asn Asp Lys Ile Phe Ser Tyr Thr Glu Ser Leu
Ala 20 25 30 Gly Lys Arg Glu Met Ala Ile Ile Thr Phe Lys Asn Gly
Ala Ile Phe 35 40 45 Gln Val Glu Val Pro Gly Ser Gln His Ile Asp
Ser Gln Lys Lys Ala 50 55 60 Ile Glu Arg Met Lys Asp Thr Leu Arg
Ile Ala Tyr Leu Thr Glu Ala 65 70 75 80 Lys Val Glu Lys Leu Cys Val
Trp Asn Asn Lys Thr Pro His Ala Ile 85 90 95 Ala Ala Ile Ser Met
Ala Asn Arg Ser Pro Gly Ser Gly Pro Gly Ser 100 105 110 Pro Arg Ser
Thr Pro Gln Asn Ile Thr Asp Leu Cys Ala Glu Ser His 115 120 125 Asn
Thr Gln Ile Tyr Thr Leu Asn Asp Lys Ile Phe Ser Tyr Thr Glu 130 135
140 Ser Leu Ala Gly Lys Arg Glu Met Ala Ile Ile Thr Phe Lys Asn Gly
145 150 155 160 Ala Ile Phe Gln Val Glu Val Pro Gly Ser Gln His Ile
Asp Ser Gln 165 170 175 Lys Lys Ala Ile Glu Arg Met Lys Asp Thr Leu
Arg Ile Ala Tyr Leu 180 185 190 Thr Glu Ala Lys Val Glu Lys Leu Cys
Val Trp Asn Asn Lys Thr Pro 195 200 205 His Ala Ile Ala Ala Ile Ser
Met Ala Asn Arg Ser Pro Gly Ser Gly 210 215 220 Pro Gly Ser Pro Arg
Ser Thr Pro Gln Asn Ile Thr Asp Leu Cys Ala 225 230 235 240 Glu Ser
His Asn Thr Gln Ile Tyr Thr Leu Asn Asp Lys Ile Phe Ser 245 250 255
Tyr Thr Glu Ser Leu Ala Gly Lys Arg Glu Met Ala Ile Ile Thr Phe 260
265 270 Lys Asn Gly Ala Ile Phe Gln Val Glu Val Pro Gly Ser Gln His
Ile 275 280 285 Asp Ser Gln Lys Lys Ala Ile Glu Arg Met Lys Asp Thr
Leu Arg Ile 290 295 300 Ala Tyr Leu Thr Glu Ala Lys Val Glu Lys Leu
Cys Val Trp Asn Asn 305 310 315 320 Lys Thr Pro His Ala Ile Ala Ala
Ile Ser Met Ala Asn 325 330 951038DNAArtificial SequenceDescription
of Artificial Sequence Synthetic polynucleotide 95accccccaga
acatcaccga cctctgcgcc gagagccaca acacccaaat ctacaccctc 60aacgacaaga
ttttcagcta caccgagagc ctcgccggca agagggagat ggccatcatc
120accttcaaga acggcgccat cttccaggtc gaggtccccg gcagccagca
catcgacagc 180cagaagaagg ccatcgagag gatgaaggac accctcagga
tcgcctacct caccgaggcc 240aaggtcgaga agctctgcgt ctggaacaac
aagacccccc acgccatcgc cgccatcagc 300atggccaaca gatcccctgg
ttctggtcct ggttctccta gatccacccc ccagaacatc 360accgacctct
gcgccgagag ccacaacacc caaatctaca ccctcaacga caagattttc
420agctacaccg agagcctcgc cggcaagagg gagatggcca tcatcacctt
caagaacggc 480gccatcttcc aggtcgaggt ccccggcagc cagcacatcg
acagccagaa gaaggccatc 540gagaggatga aggacaccct caggatcgcc
tacctcaccg aggccaaggt cgagaagctc 600tgcgtctgga acaacaagac
cccccacgcc atcgccgcca tcagcatggc caacagatcc 660cctggttctg
gtcctggttc tcctagatct accccccaga acatcaccga cctctgcgcc
720gagagccaca acacccaaat ctacaccctc aacgacaaga ttttcagcta
caccgagagc 780ctcgccggca agagggagat ggccatcatc accttcaaga
acggcgccat cttccaggtc 840gaggtccccg gcagccagca catcgacagc
cagaagaagg ccatcgagag gatgaaggac 900accctcagga tcgcctacct
caccgaggcc aaggtcgaga agctctgcgt ctggaacaac 960aagacccccc
acgccatcgc cgccatcagc atggccaaca gatcccctgg ttctggtcct
1020ggttctccta gatcttga 103896345PRTArtificial SequenceDescription
of Artificial Sequence Synthetic polypeptide 96Thr Pro Gln Asn Ile
Thr Asp Leu Cys Ala Glu Ser His Asn Thr Gln 1 5 10 15 Ile Tyr Thr
Leu Asn Asp Lys Ile Phe Ser Tyr Thr Glu Ser Leu Ala 20 25 30 Gly
Lys Arg Glu Met Ala Ile Ile Thr Phe Lys Asn Gly Ala Ile Phe 35 40
45 Gln Val Glu Val Pro Gly Ser Gln His Ile Asp Ser Gln Lys Lys Ala
50 55 60 Ile Glu Arg Met Lys Asp Thr Leu Arg Ile Ala Tyr Leu Thr
Glu Ala 65 70 75 80 Lys Val Glu Lys Leu Cys Val Trp Asn Asn Lys Thr
Pro His Ala Ile 85 90 95 Ala Ala Ile Ser Met Ala Asn Arg Ser Pro
Gly Ser Gly Pro Gly Ser 100 105 110 Pro Arg Ser Thr Pro Gln Asn Ile
Thr Asp Leu Cys Ala Glu Ser His 115 120 125 Asn Thr Gln Ile Tyr Thr
Leu Asn Asp Lys Ile Phe Ser Tyr Thr Glu 130 135 140 Ser Leu Ala Gly
Lys Arg Glu Met Ala Ile Ile Thr Phe Lys Asn Gly 145 150 155 160 Ala
Ile Phe Gln Val Glu Val Pro Gly Ser Gln His Ile Asp Ser Gln 165 170
175 Lys Lys Ala Ile Glu Arg Met Lys Asp Thr Leu Arg Ile Ala Tyr Leu
180 185 190 Thr Glu Ala Lys Val Glu Lys Leu Cys Val Trp Asn Asn Lys
Thr Pro 195 200 205 His Ala Ile Ala Ala Ile Ser Met Ala Asn Arg Ser
Pro Gly Ser Gly 210 215 220 Pro Gly Ser Pro Arg Ser Thr Pro Gln Asn
Ile Thr Asp Leu Cys Ala 225 230 235 240 Glu Ser His Asn Thr Gln Ile
Tyr Thr Leu Asn Asp Lys Ile Phe Ser 245 250 255 Tyr Thr Glu Ser Leu
Ala Gly Lys Arg Glu Met Ala Ile Ile Thr Phe 260 265 270 Lys Asn Gly
Ala Ile Phe Gln Val Glu Val Pro Gly Ser Gln His Ile 275 280 285 Asp
Ser Gln Lys Lys Ala Ile Glu Arg Met Lys Asp Thr Leu Arg Ile 290 295
300 Ala Tyr Leu Thr Glu Ala Lys Val Glu Lys Leu Cys Val Trp Asn Asn
305 310 315 320 Lys Thr Pro His Ala Ile Ala Ala Ile Ser Met Ala Asn
Arg Ser Pro 325 330 335 Gly Ser Gly Pro Gly Ser Pro Arg Ser 340 345
97708DNAArtificial SequenceDescription of Artificial Sequence
Synthetic polynucleotide 97accccccaga acatcaccga cctctgcgcc
gagagccaca acacccaaat ctacaccctc 60aacgacaaga ttttcagcta caccgagagc
ctcgccggca agagggagat ggccatcatc 120accttcaaga acggcgccat
cttccaggtc gaggtccccg gcagccagca catcgacagc 180cagaagaagg
ccatcgagag gatgaaggac accctcagga tcgcctacct caccgaggcc
240aaggtcgaga agctctgcgt ctggaacaac aagacccccc acgccatcgc
cgccatcagc 300atggccaaca gatcccctgg ttctggtcct ggttctccta
gatcccctgg ttccagatct 360accccccaga acatcaccga cctctgcgcc
gagagccaca acacccaaat ctacaccctc 420aacgacaaga ttttcagcta
caccgagagc ctcgccggca agagggagat ggccatcatc 480accttcaaga
acggcgccat cttccaggtc gaggtccccg gcagccagca catcgacagc
540cagaagaagg ccatcgagag gatgaaggac accctcagga tcgcctacct
caccgaggcc 600aaggtcgaga agctctgcgt ctggaacaac aagacccccc
acgccatcgc cgccatcagc 660atggccaaca gatcccctgg ttctggtcct
ggttctccta gatcttga 70898235PRTArtificial SequenceDescription of
Artificial Sequence Synthetic polypeptide 98Thr Pro Gln Asn Ile Thr
Asp Leu Cys Ala Glu Ser His Asn Thr Gln 1 5 10 15 Ile Tyr Thr Leu
Asn Asp Lys Ile Phe Ser Tyr Thr Glu Ser Leu Ala 20 25 30 Gly Lys
Arg Glu Met Ala Ile Ile Thr Phe Lys Asn Gly Ala Ile Phe 35 40 45
Gln Val Glu Val Pro Gly Ser Gln His Ile Asp Ser Gln Lys Lys Ala 50
55
60 Ile Glu Arg Met Lys Asp Thr Leu Arg Ile Ala Tyr Leu Thr Glu Ala
65 70 75 80 Lys Val Glu Lys Leu Cys Val Trp Asn Asn Lys Thr Pro His
Ala Ile 85 90 95 Ala Ala Ile Ser Met Ala Asn Arg Ser Pro Gly Ser
Gly Pro Gly Ser 100 105 110 Pro Arg Ser Pro Gly Ser Arg Ser Thr Pro
Gln Asn Ile Thr Asp Leu 115 120 125 Cys Ala Glu Ser His Asn Thr Gln
Ile Tyr Thr Leu Asn Asp Lys Ile 130 135 140 Phe Ser Tyr Thr Glu Ser
Leu Ala Gly Lys Arg Glu Met Ala Ile Ile 145 150 155 160 Thr Phe Lys
Asn Gly Ala Ile Phe Gln Val Glu Val Pro Gly Ser Gln 165 170 175 His
Ile Asp Ser Gln Lys Lys Ala Ile Glu Arg Met Lys Asp Thr Leu 180 185
190 Arg Ile Ala Tyr Leu Thr Glu Ala Lys Val Glu Lys Leu Cys Val Trp
195 200 205 Asn Asn Lys Thr Pro His Ala Ile Ala Ala Ile Ser Met Ala
Asn Arg 210 215 220 Ser Pro Gly Ser Gly Pro Gly Ser Pro Arg Ser 225
230 235 99723DNAArtificial SequenceDescription of Artificial
Sequence Synthetic polynucleotide 99accccccaga acatcaccga
cctctgcgcc gagagccaca acacccaaat ctacaccctc 60aacgacaaga ttttcagcta
caccgagagc ctcgccggca agagggagat ggccatcatc 120accttcaaga
acggcgccat cttccaggtc gaggtccccg gcagccagca catcgacagc
180cagaagaagg ccatcgagag gatgaaggac accctcagga tcgcctacct
caccgaggcc 240aaggtcgaga agctctgcgt ctggaacaac aagacccccc
acgccatcgc cgccatcagc 300atggccaaca gatcccctgg ttctggtcct
ggttctccta gatcccctgg ttctggtcct 360ggttctccta gatctacccc
ccagaacatc accgacctct gcgccgagag ccacaacacc 420caaatctaca
ccctcaacga caagattttc agctacaccg agagcctcgc cggcaagagg
480gagatggcca tcatcacctt caagaacggc gccatcttcc aggtcgaggt
ccccggcagc 540cagcacatcg acagccagaa gaaggccatc gagaggatga
aggacaccct caggatcgcc 600tacctcaccg aggccaaggt cgagaagctc
tgcgtctgga acaacaagac cccccacgcc 660atcgccgcca tcagcatggc
caacagatcc cctggttctg gtcctggttc tcctagatct 720tga
723100240PRTArtificial SequenceDescription of Artificial Sequence
Synthetic polypeptide 100Thr Pro Gln Asn Ile Thr Asp Leu Cys Ala
Glu Ser His Asn Thr Gln 1 5 10 15 Ile Tyr Thr Leu Asn Asp Lys Ile
Phe Ser Tyr Thr Glu Ser Leu Ala 20 25 30 Gly Lys Arg Glu Met Ala
Ile Ile Thr Phe Lys Asn Gly Ala Ile Phe 35 40 45 Gln Val Glu Val
Pro Gly Ser Gln His Ile Asp Ser Gln Lys Lys Ala 50 55 60 Ile Glu
Arg Met Lys Asp Thr Leu Arg Ile Ala Tyr Leu Thr Glu Ala 65 70 75 80
Lys Val Glu Lys Leu Cys Val Trp Asn Asn Lys Thr Pro His Ala Ile 85
90 95 Ala Ala Ile Ser Met Ala Asn Arg Ser Pro Gly Ser Gly Pro Gly
Ser 100 105 110 Pro Arg Ser Pro Gly Ser Gly Pro Gly Ser Pro Arg Ser
Thr Pro Gln 115 120 125 Asn Ile Thr Asp Leu Cys Ala Glu Ser His Asn
Thr Gln Ile Tyr Thr 130 135 140 Leu Asn Asp Lys Ile Phe Ser Tyr Thr
Glu Ser Leu Ala Gly Lys Arg 145 150 155 160 Glu Met Ala Ile Ile Thr
Phe Lys Asn Gly Ala Ile Phe Gln Val Glu 165 170 175 Val Pro Gly Ser
Gln His Ile Asp Ser Gln Lys Lys Ala Ile Glu Arg 180 185 190 Met Lys
Asp Thr Leu Arg Ile Ala Tyr Leu Thr Glu Ala Lys Val Glu 195 200 205
Lys Leu Cys Val Trp Asn Asn Lys Thr Pro His Ala Ile Ala Ala Ile 210
215 220 Ser Met Ala Asn Arg Ser Pro Gly Ser Gly Pro Gly Ser Pro Arg
Ser 225 230 235 240 101583DNAArtificial SequenceDescription of
Artificial Sequence Synthetic polynucleotide 101tatttaactc
agtattcaga aacaacaaaa gttcttctct acataaaatt ttcctatttt 60agtgatcagt
gaaggaaatc aagaaaaata aatggcggcg gattgtgcta aaggtaaaat
120tgagttttcc aagtataatg aggataatac ctttactgtg aaggtgtcag
gaagagaata 180ctggacgaac agatggaatt tgcagccatt gttacaaagt
gctcagctga cagggatgac 240tgtaacaatc atatctaata cctgcagttc
aggctcaggc tttgcccagg tgaagtttaa 300cagatcccct ggttctggtc
ctggttctcc tagatccgcg gcggattgtg ctaaaggtaa 360aattgagttt
tccaagtata atgaggataa tacctttact gtgaaggtgt caggaagaga
420atactggacg aacagatgga atttgcagcc attgttacaa agtgctcagc
tgacagggat 480gactgtaaca atcatatcta atacctgcag ttcaggctca
ggctttgccc aggtgaagtt 540taacagatcc cctggttctg gtcctggttc
tcctagatcc tga 583102682DNAArtificial SequenceDescription of
Artificial Sequence Synthetic polynucleotide 102tatttaactc
agtattcaga aacaacaaaa gttcttctct acataaaatt ttcctatttt 60agtgatcagt
gaaggaaatc aagaaaaata aatggggaga atgtcaatac ccatgatggg
120ttttgtggtg ttatgtctat gggcagtggt agcagaagga tccgcggcgg
attgtgctaa 180aggtaaaatt gagttttcca agtataatga ggataatacc
tttactgtga aggtgtcagg 240aagagaatac tggacgaaca gatggaattt
gcagccattg ttacaaagtg ctcagctgac 300agggatgact gtaacaatca
tatctaatac ctgcagttca ggctcaggct ttgcccaggt 360gaagtttaac
agatcccctg gttctggtcc tggttctcct agatcccctg gttccagatc
420tgcggcggat tgtgctaaag gtaaaattga gttttccaag tataatgagg
ataatacctt 480tactgtgaag gtgtcaggaa gagaatactg gacgaacaga
tggaatttgc agccattgtt 540acaaagtgct cagctgacag ggatgactgt
aacaatcata tctaatacct gcagttcagg 600ctcaggcttt gcccaggtga
agtttaacag atcccctggt tctggtcctg gttctcctag 660atctgaacat
gatgaattgt ga 682103697DNAArtificial SequenceDescription of
Artificial Sequence Synthetic polynucleotide 103tatttaactc
agtattcaga aacaacaaaa gttcttctct acataaaatt ttcctatttt 60agtgatcagt
gaaggaaatc aagaaaaata aatggggaga atgtcaatac ccatgatggg
120ttttgtggtg ttatgtctat gggcagtggt agcagaagga tccgcggcgg
attgtgctaa 180aggtaaaatt gagttttcca agtataatga ggataatacc
tttactgtga aggtgtcagg 240aagagaatac tggacgaaca gatggaattt
gcagccattg ttacaaagtg ctcagctgac 300agggatgact gtaacaatca
tatctaatac ctgcagttca ggctcaggct ttgcccaggt 360gaagtttaac
agatcccctg gttctggtcc tggttctcct agatcccctg gttctggtcc
420tggttctcct agatctgcgg cggattgtgc taaaggtaaa attgagtttt
ccaagtataa 480tgaggataat acctttactg tgaaggtgtc aggaagagaa
tactggacga acagatggaa 540tttgcagcca ttgttacaaa gtgctcagct
gacagggatg actgtaacaa tcatatctaa 600tacctgcagt tcaggctcag
gctttgccca ggtgaagttt aacagatccc ctggttctgg 660tcctggttct
cctagatctg aacatgatga attgtga 697104805DNAArtificial
SequenceDescription of Artificial Sequence Synthetic polynucleotide
104tatttaactc agtattcaga aacaacaaaa gttcttctct acataaaatt
ttcctatttt 60agtgatcagt gaaggaaatc aagaaaaata aatggcctcc atctcctcct
cagccatcgc 120caccgtcaac cggaccacct ccacccaagc tagcttggca
gctccattca ccggcctcaa 180gtctaacgta gctttcccag ttaccaagaa
ggctaacaat gacttttcat ccctacccag 240caacggtgga agagtacaat
gcatgaaggt gtggccacca attgggttga agaagtacga 300gactctttca
tacctagcgg cggattgtgc taaaggtaaa attgagtttt ccaagtataa
360tgaggataat acctttactg tgaaggtgtc aggaagagaa tactggacga
acagatggaa 420tttgcagcca ttgttacaaa gtgctcagct gacagggatg
actgtaacaa tcatatctaa 480tacctgcagt tcaggctcag gctttgccca
ggtgaagttt aacagatccc ctggttctgg 540tcctggttct cctagatccg
cggcggattg tgctaaaggt aaaattgagt tttccaagta 600taatgaggat
aataccttta ctgtgaaggt gtcaggaaga gaatactgga cgaacagatg
660gaatttgcag ccattgttac aaagtgctca gctgacaggg atgactgtaa
caatcatatc 720taatacctgc agttcaggct caggctttgc ccaggtgaag
tttaacagat cccctggttc 780tggtcctggt tctcctagat cctga
805105826DNAArtificial SequenceDescription of Artificial Sequence
Synthetic polynucleotide 105tatttaactc agtattcaga aacaacaaaa
gttcttctct acataaaatt ttcctatttt 60agtgatcagt gaaggaaatc aagaaaaata
aatggcggcg gattgtgcta aaggtaaaat 120tgagttttcc aagtataatg
aggataatac ctttactgtg aaggtgtcag gaagagaata 180ctggacgaac
agatggaatt tgcagccatt gttacaaagt gctcagctga cagggatgac
240tgtaacaatc atatctaata cctgcagttc aggctcaggc tttgcccagg
tgaagtttaa 300cagatcccct ggttctggtc ctggttctcc tagatccgcg
gcggattgtg ctaaaggtaa 360aattgagttt tccaagtata atgaggataa
tacctttact gtgaaggtgt caggaagaga 420atactggacg aacagatgga
atttgcagcc attgttacaa agtgctcagc tgacagggat 480gactgtaaca
atcatatcta atacctgcag ttcaggctca ggctttgccc aggtgaagtt
540taacagatcc cctggttctg gtcctggttc tcctagatcc gcggcggatt
gtgctaaagg 600taaaattgag ttttccaagt ataatgagga taataccttt
actgtgaagg tgtcaggaag 660agaatactgg acgaacagat ggaatttgca
gccattgtta caaagtgctc agctgacagg 720gatgactgta acaatcatat
ctaatacctg cagttcaggc tcaggctttg cccaggtgaa 780gtttaacaga
tcccctggtt ctggtcctgg ttctcctaga tcctga 826106910DNAArtificial
SequenceDescription of Artificial Sequence Synthetic polynucleotide
106tatttaactc agtattcaga aacaacaaaa gttcttctct acataaaatt
ttcctatttt 60agtgatcagt gaaggaaatc aagaaaaata aatggggaga atgtcaatac
ccatgatggg 120ttttgtggtg ttatgtctat gggcagtggt agcagaagga
tccgcggcgg attgtgctaa 180aggtaaaatt gagttttcca agtataatga
ggataatacc tttactgtga aggtgtcagg 240aagagaatac tggacgaaca
gatggaattt gcagccattg ttacaaagtg ctcagctgac 300agggatgact
gtaacaatca tatctaatac ctgcagttca ggctcaggct ttgcccaggt
360gaagtttaac agatcccctg gttctggtcc tggttctcct agatccgcgg
cggattgtgc 420taaaggtaaa attgagtttt ccaagtataa tgaggataat
acctttactg tgaaggtgtc 480aggaagagaa tactggacga acagatggaa
tttgcagcca ttgttacaaa gtgctcagct 540gacagggatg actgtaacaa
tcatatctaa tacctgcagt tcaggctcag gctttgccca 600ggtgaagttt
aacagatccc ctggttctgg tcctggttct cctagatccg cggcggattg
660tgctaaaggt aaaattgagt tttccaagta taatgaggat aataccttta
ctgtgaaggt 720gtcaggaaga gaatactgga cgaacagatg gaatttgcag
ccattgttac aaagtgctca 780gctgacaggg atgactgtaa caatcatatc
taatacctgc agttcaggct caggctttgc 840ccaggtgaag tttaacagat
cccctggttc tggtcctggt tctcctagat ccgaacatga 900tgaattgtga
9101071048DNAArtificial SequenceDescription of Artificial Sequence
Synthetic polynucleotide 107tatttaactc agtattcaga aacaacaaaa
gttcttctct acataaaatt ttcctatttt 60agtgatcagt gaaggaaatc aagaaaaata
aatggcctcc atctcctcct cagccatcgc 120caccgtcaac cggaccacct
ccacccaagc tagcttggca gctccattca ccggcctcaa 180gtctaacgta
gctttcccag ttaccaagaa ggctaacaat gacttttcat ccctacccag
240caacggtgga agagtacaat gcatgaaggt gtggccacca attgggttga
agaagtacga 300gactctttca tacctagcgg cggattgtgc taaaggtaaa
attgagtttt ccaagtataa 360tgaggataat acctttactg tgaaggtgtc
aggaagagaa tactggacga acagatggaa 420tttgcagcca ttgttacaaa
gtgctcagct gacagggatg actgtaacaa tcatatctaa 480tacctgcagt
tcaggctcag gctttgccca ggtgaagttt aacagatccc ctggttctgg
540tcctggttct cctagatccg cggcggattg tgctaaaggt aaaattgagt
tttccaagta 600taatgaggat aataccttta ctgtgaaggt gtcaggaaga
gaatactgga cgaacagatg 660gaatttgcag ccattgttac aaagtgctca
gctgacaggg atgactgtaa caatcatatc 720taatacctgc agttcaggct
caggctttgc ccaggtgaag tttaacagat cccctggttc 780tggtcctggt
tctcctagat ccgcggcgga ttgtgctaaa ggtaaaattg agttttccaa
840gtataatgag gataatacct ttactgtgaa ggtgtcagga agagaatact
ggacgaacag 900atggaatttg cagccattgt tacaaagtgc tcagctgaca
gggatgactg taacaatcat 960atctaatacc tgcagttcag gctcaggctt
tgcccaggtg aagtttaaca gatcccctgg 1020ttctggtcct ggttctccta gatcctga
1048108787DNAArtificial SequenceDescription of Artificial Sequence
Synthetic polynucleotide 108tatttaactc agtattcaga aacaacaaaa
gttcttctct acataaaatt ttcctatttt 60agtgatcagt gaaggaaatc aagaaaaata
aatgaccccc cagaacatca ccgacctctg 120cgccgagagc cacaacaccc
aaatctacac cctcaacgac aagattttca gctacaccga 180gagcctcgcc
ggcaagaggg agatggccat catcaccttc aagaacggcg ccatcttcca
240ggtcgaggtc cccggcagcc agcacatcga cagccagaag aaggccatcg
agaggatgaa 300ggacaccctc aggatcgcct acctcaccga ggccaaggtc
gagaagctct gcgtctggaa 360caacaagacc ccccacgcca tcgccgccat
cagcatggcc aacagatccc ctggttctgg 420tcctggttct cctagatcca
ccccccagaa catcaccgac ctctgcgccg agagccacaa 480cacccaaatc
tacaccctca acgacaagat tttcagctac accgagagcc tcgccggcaa
540gagggagatg gccatcatca ccttcaagaa cggcgccatc ttccaggtcg
aggtccccgg 600cagccagcac atcgacagcc agaagaaggc catcgagagg
atgaaggaca ccctcaggat 660cgcctacctc accgaggcca aggtcgagaa
gctctgcgtc tggaacaaca agacccccca 720cgccatcgcc gccatcagca
tggccaacag atcccctggt tctggtcctg gttctcctag 780atcctga
787109886DNAArtificial SequenceDescription of Artificial Sequence
Synthetic polynucleotide 109tatttaactc agtattcaga aacaacaaaa
gttcttctct acataaaatt ttcctatttt 60agtgatcagt gaaggaaatc aagaaaaata
aatggggaga atgtcaatac ccatgatggg 120ttttgtggtg ttatgtctat
gggcagtggt agcagaagga tccacccccc agaacatcac 180cgacctctgc
gccgagagcc acaacaccca aatctacacc ctcaacgaca agattttcag
240ctacaccgag agcctcgccg gcaagaggga gatggccatc atcaccttca
agaacggcgc 300catcttccag gtcgaggtcc ccggcagcca gcacatcgac
agccagaaga aggccatcga 360gaggatgaag gacaccctca ggatcgccta
cctcaccgag gccaaggtcg agaagctctg 420cgtctggaac aacaagaccc
cccacgccat cgccgccatc agcatggcca acagatcccc 480tggttctggt
cctggttctc ctagatcccc tggttccaga tctacccccc agaacatcac
540cgacctctgc gccgagagcc acaacaccca aatctacacc ctcaacgaca
agattttcag 600ctacaccgag agcctcgccg gcaagaggga gatggccatc
atcaccttca agaacggcgc 660catcttccag gtcgaggtcc ccggcagcca
gcacatcgac agccagaaga aggccatcga 720gaggatgaag gacaccctca
ggatcgccta cctcaccgag gccaaggtcg agaagctctg 780cgtctggaac
aacaagaccc cccacgccat cgccgccatc agcatggcca acagatcccc
840tggttctggt cctggttctc ctagatctga acatgatgaa ttgtga
886110901DNAArtificial SequenceDescription of Artificial Sequence
Synthetic polynucleotide 110tatttaactc agtattcaga aacaacaaaa
gttcttctct acataaaatt ttcctatttt 60agtgatcagt gaaggaaatc aagaaaaata
aatggggaga atgtcaatac ccatgatggg 120ttttgtggtg ttatgtctat
gggcagtggt agcagaagga tccacccccc agaacatcac 180cgacctctgc
gccgagagcc acaacaccca aatctacacc ctcaacgaca agattttcag
240ctacaccgag agcctcgccg gcaagaggga gatggccatc atcaccttca
agaacggcgc 300catcttccag gtcgaggtcc ccggcagcca gcacatcgac
agccagaaga aggccatcga 360gaggatgaag gacaccctca ggatcgccta
cctcaccgag gccaaggtcg agaagctctg 420cgtctggaac aacaagaccc
cccacgccat cgccgccatc agcatggcca acagatcccc 480tggttctggt
cctggttctc ctagatcccc tggttctggt cctggttctc ctagatctac
540cccccagaac atcaccgacc tctgcgccga gagccacaac acccaaatct
acaccctcaa 600cgacaagatt ttcagctaca ccgagagcct cgccggcaag
agggagatgg ccatcatcac 660cttcaagaac ggcgccatct tccaggtcga
ggtccccggc agccagcaca tcgacagcca 720gaagaaggcc atcgagagga
tgaaggacac cctcaggatc gcctacctca ccgaggccaa 780ggtcgagaag
ctctgcgtct ggaacaacaa gaccccccac gccatcgccg ccatcagcat
840ggccaacaga tcccctggtt ctggtcctgg ttctcctaga tctgaacatg
atgaattgtg 900a 9011111009DNAArtificial SequenceDescription of
Artificial Sequence Synthetic polynucleotide 111tatttaactc
agtattcaga aacaacaaaa gttcttctct acataaaatt ttcctatttt 60agtgatcagt
gaaggaaatc aagaaaaata aatggcctcc atctcctcct cagccatcgc
120caccgtcaac cggaccacct ccacccaagc tagcttggca gctccattca
ccggcctcaa 180gtctaacgta gctttcccag ttaccaagaa ggctaacaat
gacttttcat ccctacccag 240caacggtgga agagtacaat gcatgaaggt
gtggccacca attgggttga agaagtacga 300gactctttca tacctaaccc
cccagaacat caccgacctc tgcgccgaga gccacaacac 360ccaaatctac
accctcaacg acaagatttt cagctacacc gagagcctcg ccggcaagag
420ggagatggcc atcatcacct tcaagaacgg cgccatcttc caggtcgagg
tccccggcag 480ccagcacatc gacagccaga agaaggccat cgagaggatg
aaggacaccc tcaggatcgc 540ctacctcacc gaggccaagg tcgagaagct
ctgcgtctgg aacaacaaga ccccccacgc 600catcgccgcc atcagcatgg
ccaacagatc ccctggttct ggtcctggtt ctcctagatc 660caccccccag
aacatcaccg acctctgcgc cgagagccac aacacccaaa tctacaccct
720caacgacaag attttcagct acaccgagag cctcgccggc aagagggaga
tggccatcat 780caccttcaag aacggcgcca tcttccaggt cgaggtcccc
ggcagccagc acatcgacag 840ccagaagaag gccatcgaga ggatgaagga
caccctcagg atcgcctacc tcaccgaggc 900caaggtcgag aagctctgcg
tctggaacaa caagaccccc cacgccatcg ccgccatcag 960catggccaac
agatcccctg gttctggtcc tggttctcct agatcctga 100911230DNAArtificial
SequenceDescription of Artificial Sequence Synthetic primer
112tataggatcc cattattttt cttgatttcc 3011330DNAArtificial
SequenceDescription of Artificial Sequence Synthetic primer
113aaatgcatgg cctccatctc ctcctcagcc 3011430DNAArtificial
SequenceDescription of Artificial Sequence Synthetic primer
114tttggatcct aggtatgaaa gagtctcgta 30
* * * * *