U.S. patent application number 10/521768 was filed with the patent office on 2006-01-05 for method of expressing recombinant protein in cho cells.
Invention is credited to Robert Gay, Robert Kallmeier.
Application Number | 20060003405 10/521768 |
Document ID | / |
Family ID | 9940670 |
Filed Date | 2006-01-05 |
United States Patent
Application |
20060003405 |
Kind Code |
A1 |
Kallmeier; Robert ; et
al. |
January 5, 2006 |
Method of expressing recombinant protein in cho cells
Abstract
Method of expressing recombinant protein in CHO cells, by using
an expression vector comprising the murine IgG 2A gene locus.
Inventors: |
Kallmeier; Robert; (Holmer
Green, GB) ; Gay; Robert; (Pinner Middx, GB) |
Correspondence
Address: |
NIXON & VANDERHYE, PC
901 NORTH GLEBE ROAD, 11TH FLOOR
ARLINGTON
VA
22203
US
|
Family ID: |
9940670 |
Appl. No.: |
10/521768 |
Filed: |
July 21, 2003 |
PCT Filed: |
July 21, 2003 |
PCT NO: |
PCT/EP03/07946 |
371 Date: |
January 19, 2005 |
Current U.S.
Class: |
435/69.1 ;
435/358; 435/456 |
Current CPC
Class: |
C12N 2830/42 20130101;
C12N 2800/108 20130101; C12N 2840/20 20130101; C12N 15/907
20130101 |
Class at
Publication: |
435/069.1 ;
435/456; 435/358 |
International
Class: |
C12P 21/06 20060101
C12P021/06; C12N 5/06 20060101 C12N005/06; C12N 15/86 20060101
C12N015/86 |
Foreign Application Data
Date |
Code |
Application Number |
Jul 19, 2002 |
GB |
0216648.6 |
Claims
1-8. (canceled)
9. CHO cell transfected with an expression vector comprising a
promoter that is active in CHO cells and that is driving expression
of a recombinant product protein and further comprising a portion
from the murine IgA 2A gene locus DNA which portion is enhancing
activity of said promoter.
10. CHO cell according to claim 9, characterized in that the vector
further comprises a transcription unit encoding a selectable
marker, preferably a glutamin synthetase (GS) marker.
11. CHO cell according to claim 9 or 10, characterized in the CHO
cell is stably transfected.
12. Method of expressing a recombinant protein, comprising the
steps of culturing a CHO cell transfected with an expression vector
comprising a promoter active in CHO cells driving expression of a
recombinant product protein and further comprising the murine IgA
2A gene locus DNA or a DNA sequence variant or DNA fragment thereof
which is enhancing activity of said promoter, and harvesting the
product protein
13. Method according to claim 12, characterised in that the
promoter is a strong viral promoter, preferably the hCMV
promoter.
14. Method according to one of claims 12 or 13, characterised in
that the IgA 2A gene locus portion does lack the natural
immunoglobulin promoter.
15. Method according to claim 12, characterized in that the
promoter is hCMV promoter or a functional part thereof having
promoter activity wherein said promoter or functional part lack the
`modulator` sequence in the upstream/enhancer portion as found
stretching from position -750 to -1150 relative to the MIE
transcription start site.
16. CHO cell transfected with a mammalian expression vector
comprising at least a first transcription unit for a product gene
which transcription unit is under the control of the mCMV promoter,
and further comprising a second transcription unit comprising a
glutamine synthetase (GS) marker gene.
17. Mammalian expression vector comprising at least a first
transcription unit for a product gene which transcription unit is
under control of the mCMV promoter or a functional fragment
thereof, and further comprising a second transcription unit
comprising a glutamine synthetase (GS) marker gene.
18. Vector according to claim 16, wherein the mCMV promoter or
functional fragment comprises the natural transcription start site
(+0) and extends upstream to position -500.
19. Vector according to claim 18, wherein the mCMV promoter or
functional fragment extends to the natural Xho l restriction
site.
20. Vector according to claim 18, wherein the transcription start
site is engineered to comprise a suitable restriction site for
insertion of a recombinant gene product.
21. Vector according to claim 17 or 18, wherein the first
transcription unit harbors at least one intron sequence.
22. Vector according to claim 21, wherein said intron is not the
first, natural intron of the mCMV promoter.
23. Method of using 17 for enhancing the transfection rate in CHO
cells.
Description
[0001] The present invention relates to a method for expressing a
recombinant product gene in a CHO cell line as well as to
recombinant CHO host cells and to novel expression vector
constructs.
[0002] The Chinese Hamster ovary cell (CHO) mammalian expression
system is widely used in production of recombinant protein. Apart
from lymphoid cell lines such as hybridoma cell lines, it is one of
the few cell types allowing for simple and efficient high-density
suspension batch culture of animal cell. Furthermore, they allow
for very high product yields and are comparatively robust to
metabolic stresses whereas lymphoid cells are more difficult to
culture at an industrial scale. Given considerable cost of
production, it is of utmost importance to maximize the yield of
recombinant protein per bioreactor run. Choice of culture medium
composition and bioreactor design and operation are parameters that
impact yield and may be quite complex to optimize. More
predictably, increases in the strength or transcriptional activity
of the promoter controlling expression of product protein enhance
yield. Incremental increases at the single cell level will
translate into considerable improvements of product yield in
high-density batch or fed-batch culture showing stationary phase
gene expression at cell densities in the range of 10.sup.6 to
10.sup.7 cells/ml.
[0003] U.S. Pat. No. 5,866,359 describes a method of enhancing
expression from an already strong hCMV promoter in CHO and NSO
cells by co-expressiong adenoviral E1A protein from a weak
promoter. E1A is a multifunctional transcription factor which may
act on cell cycle regulation and has both independent
transcriptional activating and repressing functional domains. The
finetuning of E1A expression to appropriate low level expression is
crucial for success of the co-expression approach in order to
achieve the ideal balance in between gene transactivation whilst
avoiding any negative impact on cell cycle progression. As a
disadvantage, apart from careful choice of the promoter driving E1A
expression, this system blocks part of the protein synthesis
capacity of the cell with E1A expression rather than expressing the
recombinant protein of interest.
[0004] WO 95/17516 describes use of the murine immunoglobulin gamma
2A locus for targetting an expression vector construct to a highly
active gene locus in lymphoid cells of the B-cell lineage, e.g.
widely used NSO myeloma cells. NSO cells essentially are a tumor
cell line of murine plasma or B-cells. Only in B-cells, the
chromatin harboring the immunoglobulin loci is in its fully active,
open state, allowing for high transcriptional activity of native
immunoglobulin promoters or recombinant expression constructs
integrated into those gene loci.
[0005] As a disadvantage, due to the principle of homologous
recombination, the targetting sequence will target efficiently in
murine cell lines only matching the sequence of the gamma 2A
targetting sequence harboring a recombinatorial hot spot; for high
level expression, the gamma 2A locus region must be a
transcriptionally active genomic region, limiting its effectiveness
for homologous recombination to B-cell types.
[0006] It is an object of the present invention to devise another
expression system for CHO protein expression in biotechnology which
allows for enhanced expression from a standard promoter. According
to the present invention, this aim is surprisingly achieved by
equipping a gene expression vector for CHO cells with a gene
targetting sequence having been originally devised for homologous
recombination in murine B-cells.
[0007] Possible embodiments of the invention are shown in the
figures. What is shown is:
[0008] FIG. 1 Relative expression levels of green fluorescent
protein (GFP) from hCMV promoter and hCMV promoter in the presence
of the IgG 2A hot spot sequence in transient transfection of CHO-K1
cells
[0009] FIG. 2 Relative GFP expression levels from hCMV promoter and
hCMV promoter in the presence of the IgG 2A hot spot sequence in
stably transfected CHO-K1 cells.
[0010] FIG. 3 Plasmid map of hCMV-MIE expression vector carrying
IgG 2A targetting sequence
[0011] According to the present invention, a DNA sequence for
expression of a recombinant gene in a mammalian cell comprises a
recombinant product gene and a promoter for expressing the
recombinant product gene, preferably a CMV promoter, and further
comprises a murine immunoglobulin gamma 2A locus DNA sequence or
fragments or sequence variants thereof capable of enhancing
expression from the promoter. According to the present invention,
such a DNA sequence is useful expression vector construct for
expression of recombinant product gene in CHO cells.
[0012] According to the present invention, the method of expressing
a recombinant protein comprises the steps of [0013] a. culturing a
CHO cell transfected with an expression vector comprising a
promoter active in CHO cells driving expression of a recombinant
product protein and further comprising the murine IgG 2A gene locus
DNA or a DNA sequence variant or DNA fragment thereof which is
enhancing activity of said promoter, and [0014] b. harvesting the
product protein
[0015] A recombinant product gene according to the present
invention is the product protein that is sought to be expressed and
harvested in high amount. It may be any protein of interest, e.g.
therapeutic proteins such as interleukins or enzymes or subunits of
multimeric proteins such as antibodies or fragments thereof. The
recombinant product gene may include a signal sequence coding
sequence portion allowing secretion of the once expressed
polypeptide from the host producer cell. In a further prefered
embodiment of the present invention, the product protein is a
secreted protein. More preferably, the first or product protein is
an antibody or engineered antibody or a fragment thereof, most
preferably it is an Immunoglobulin G (IgG) antibody.
[0016] The DNA sequence of the murine immunoglobulin gamma 2A gene
locus (IgG 2A) has originally been devised in WO 95/17516 for use
as a genomic targetting sequence for generating stably recombinant
lymphoid B-cell lines that show high expression of the recombinant
gene product. B lymphocytes or plasma cells normally express
extremely high levels of immunoglobulin RNA from the the Ig heavy
chain locus, probably due to cell-type specific
enhancer/transcription factor activity and open chromatin
structure. The preferred murine immunoglobuline gamma 2A gene
sequence of the present invention is the same as the targetting
sequence used in WO 95/17516. It is a 5.1 kb BamHI genomic fragment
which includes all of the coding region of murine Ig gamma 2A
except the most 5' part of the CH1 exon (Yamawaki-Kataoka, Y. et
al., Proc. Natl. Acad. Sci. U.S.A. (1982) 79: 2623-2627; Hall, B.
et al., Molecular Immunology (1989) 26:819-826; Yamawaki-Kataoka,
Y. et al., Nucleic Acid Research (1981) 9: 1365-1381). According to
the present invention, promotion of site-directed, homologous
recombination is not the relevant property of the immunoglobulin
gamma 2A gene sequence (IgG 2A).
[0017] Accordingly, any sequence variant of said IgG 2A gene
sequence or sequence fragment or variant sequence fragment that is
functional in or capable of enhancing recombinant product gene
expression from the promoter, preferably from a hCMV promoter as
set forth below, both under condition of transient or stable
expression in CHO cells is also encompassed by the present
invention.
[0018] Such `functional` variants encompass e.g. base insertions,
deletions or point mutations and be generated by methods well-known
in the art, e.g. by primer-directed PCR, `error-prone` PCR,
`gene-shuffling` termed PCR-reassembly of overlapping DNA fragments
or by in-vivo random mutagenesis of bacterial clones followed by
library transfection and functional selection in CHO cells. For
instance, random mutagenesis can be achieved by alkylating
chemicals or UV-irradiations as described in Miller, J.,
Experiments in Molecular Genetics, Cold Spring Harbor Laboratory
1972). Optionally, a natural mutator-strain of a host bacterium may
be used.
[0019] Preferably, such variant sequence or sequence fragment is at
least 65%, more preferably 75%, most preferably 90% homologous in
DNA sequence to the corresponding part of the natural murine
immunoglobuline gamma 2A gene locus. For instance, it is possible
to insert a Sal I restriction site at the naturally occurring Stu I
site present 39 bp upstream of membrane exon 2 (M2) to provide a
unique site for linearization within the murine immunoglobulin
gamma 2A sequence; such sequence variant was originally devised for
site-specific recombination targetting, but can as well be employed
in the context of the present invention.
[0020] A `promoter` is defined as a DNA sequence that directs RNA
polymerase to bind to DNA and intiates RNA synthesis. According to
the present invention, it is a promoter that is active in CHO
cells. Such a promoter preferably is a strong promoter. A strong
promoter is one which causes mRNAs to be initated at high frequency
equal to or higher than that of hCMV core promoter/enhancer
fragment (described in U.S. Pat. No. 5,168,062) in CHO-KI cells.
Such promoter may be a cell-type dependent strong promoter, as are
cited in U.S. Pat. No. 5,589,392, or preferably is a ubiquitously
active strong promoter, more preferably a constitutively active
viral promoter such as e.g. early and late promoters of the SV40
virus, the immediate early promoter of the human cytomegalovirus
(hCMV) or of murine cytomegalovirus (mCMV), the thymidine kinase
promoter (TK) of Herpes Simplex virus or the Rous Sarcoma Virus
long terminal repeat promoter (RS-LTR), more preferably it is the
hCMV-MIE promoter as defined by the 2.1 kb Pst I fragment described
in U.S. Pat. No. 5,385,839 and/or EP-323 997-A1 or a functional
part thereof having promoter activity. The hCMV promoter construct
harboring the complete first functional intron of the major
immediate early (MIE) gene of hCMV, as set forth in EP-323 997-A1,
is a particularly preferred embodiment of the present
invention.
[0021] Preferably a hCMV promoter employed in the present invention
lacks the `modulator` sequence part in the upstream/enhancer
portion of the promoter. The `modulator` sequence has been found to
be detrimental to hCMV promoter activity in CHO cells and stretches
from position -750 to position -1150 relative to the MIE
transcription start site (Meier et al., 1996, Intervirology 39:
331-342, Regulation of hCMV immediate-early gene expression), in
particular in transient transfection. Without the modulator
sequence, the enhancing effect of the presence of the IgG 2A host
spot sequence on (modulator negative or mod- for short) hCMV
promoter is even more pronounced.
[0022] A transient transfection is characterised by non-appliance
of any selection pressure for a vector borne selection marker. A
pool or batch of cells originating from a transient transfection is
a pooled cell population that comprises cells which have taken up
and do express and cells that have not taken up the foreign DNA.
Cells that express the foreign expression cassette do usually not
have integrated the transfected DNA into their genome yet and tend
to lose the foreign DNA and to overgrow transfected cells in the
population upon culture of the transiently transfected cell pool.
Therefore expression is strongest in the period immediately
following transfection and decreases with time. Preferably, a
transient transfectant according to the present invention is
understood as a cell that is maintained in cell culture in the
absence of selection pressure up to a time of 90 hours post
transfection.
[0023] Preferably, a transfected CHO host cell according to the
present invention is a stably transfected host cell, in particular
in combination with a hCMV promoter as set forth above. Stable
transfection means that newly introduced foreign DNA is becoming
incorporated into genomic DNA, usually by random, non-homologous
recombination events; in case of a vector sequence, stable
transfection according to the present invention may result in loss
of vector sequence parts not directly related to expression of the
recombinant product gene, such as e.g. bacterial copy number
control regions rendered superfluous upon genomic integration. A
transfected host cell has integrated at least part or different
parts of the expression vector into the genome. Likewise,
transfection of CHO cells with two or several DNA fragments giving
rise at least in vivo to functional equivalents of the essential
elements of the expression vector of the invention, namely the
product gene under control of a suitable promoter and the hot spot
IgG 2A sequence, is contained in the definition of such transfected
host cells. In vivo assembly of functional DNA sequences after
transfection of fragmented DNA is described e.g. in WO 99/53046. It
is possible that such stable integration gives rise, upon exposure
to further selection pressure for gene amplification, to double
minute chromosomes in CHO cells. This is comprised in the present
meaning of `stable`. Upon random genomic integration of the
expression vector of the present invention in CHO, the presence of
the targetting sequence enhances promoter activity for expression
of the recombinant product protein. Such effect has not been
observed nor could it have been anticipated upon homologous gene
targetting in mature murine B-cell lines including
plasmacytoma/myeloma cell lines; there, the IgG 2A targetting
sequence served solely to increase the frequency of high-yielding
homologous integrants since the IgG 2A locus proved to be a
recombinatorial `hot spot`. As said before, the chromatin of the
immunglobuline genomic region is in an open, highly active state in
suitably targetted B-cell lines.
[0024] `Expression vectors` are defined herein as DNA sequences
that are required for transcription and the translation of their
mRNAs in an appropriate mammalian host cell line after transfection
with vector. An appropriately constructed expression vector should
usually contain: at least one expressable marker selectable in
animal cells, a limited number of useful restriction sites for
insertion of the expression cassette for the recombinant product
gene under control of an upstream promoter region. Where used in
particular for transient/episomal expression only, it may further
comprise an origin of replication such as origin of Eppstein Barr
Virus (EBV) or SV40 virus for autonomous replication/episomal
maintenance in eukaryotic host cells but may be devoid of a
selectable marker. Expression vectors are e.g., but are not limited
to, linear DNA fragments, DNA fragments encompassing nuclear
targeting sequences or are specially optimized for interaction with
transfection reagents, animal viruses or suitable plasmids that can
be shuttled and produced in bacteria. Any selection marker commonly
employed such as thymidine kinase (tk), dihydrofolate reductase
(DHFR) or glutamine synthetase (GS) may be used. In a preferred
embodiment, an expressable GS selection marker is employed
(Bebbington et al., 1992, High-level expression of a recombinant
antibody from myeloma cells using a glutamine synthetase gene as an
amplifiable selectable marker, Bio/Technology 10:169-175; Cockett
et al., 1990, High level expression of tissue inhibitor of
metalloproteinases in Chinese Hamster Ovary (CHO) cells using
Glutamine synthetase gene amplification, Bio/Technology 8:
662-667).--The GS-system is one of only two systems that are of
particular importance for the production of therapeutic proteins.
In comparison to the dihydrofolate reductase (DHFR) system, the GS
system offers a large time advantage during development because
highly productive cell lines can often be created from the initial
tranfectant thus avoiding the need for multiple rounds of selection
in the presence of increasing concentrations of selective agent in
order to achieve gene amplification (Brown et al., 1992, Process
development for the production of recombinant antibodies using the
glutamine synthetase (GS) system, Cytotechnology 9:231-236). It
goes without saying that equivalent to a second transcription unit
for expression of the marker gene, an expression unit could use a
monocistronic expression cassette both for the product gene and the
marker gene by employing e.g. internal ribosome entry sites as is
routinely employed in the art. Vice versa, it goes without saying
that the hot spot IgG 2A sequence of the present invention and the
expression cassette for the product protein comprising a promoter
and/or marker cassette are not required to work in cis on a single
expression vector; the elements can be well carried on separate
co-transfected vectors or DNA fragments which may then be
chromosomally integrated at a single, concatemeric integration
site.
[0025] A further object of the present invention are CHO host cells
transfected with the DNA sequences of the present invention.
Further objects are a method for transfection of such host cells
and a method for expression of the recombinant product gene in such
host cells. The explanations and references made to preferred
embodiments in the present specification of the invention relate
likewise to all these further objects of the present invention. It
is to be noted that a host cell transfected with the DNA sequence
or vector of the present invention is to be construed as being a
transiently or stably transfected cell line. Any transfection
technique such as those well-known in the art, e.g. electoporation,
Ca-phosphate precipitation, DEAE-dextrane transfection,
lipofection, can be employed according to the present invention if
appropriate for a given host cell type.
[0026] A suitable host cell line can be any chinese hamster ovary
(CHO) cell line (Puck et al., 1958, J. Exp. Med. 108: 945-955). The
term `host cell` refers to cells capable of growth in culture and
expressing a desired protein recombinant product protein. Suitable
cell lines can be e.g. CHO K1 (ATCC CCL-61), CHO pro3-, CHO DG44,
CHO P12 or the dhfr-CHO cell line DUK-BII (Chassin et al., PNAS 77,
1980, 4216-4220) or DUXB11 (Simonsen et al., PNAS 80, 1983,
2495-2499). In CHO cells, the immunoglobuline gene loci are
inactive and the chromatin is therefore in a densely packaged or
closed state. Thus, any gene construct integrated in the
immunoglobuline loci could not give rise to high-level expression
of recombinant protein due to the specific state of chromatin,
unless it would itself comprise flanking locus control regions
promoting opening of the chromatin on both sides of the expression
cassette. Further, immunoglobuline gene sequence, and in particular
the intron portions of it, show considerably divergence amongst
species, e.g. from mouse to hamster. The promoter or enhancer
elements of immunoglobline loci are bothspecies and tissue specific
and should be active in B-cells only. The murine IgG 2A sequence of
the present invention enhances gene expression in CHO cells also in
the absence of any natural immunoglobuline promoter that is giving
rise to full-length transcripts coding for complete IgG heavy
chain. Preferably, the IgG 2A sequence of the present invention is
devoid of such promoter. Surprisingly, the murine IgG 2A targetting
sequence even improved gene expression in CHO cells upon transient
transfection of CHO cells with expression vectors according to the
present invention (FIG. 1); such transient expression is a further
preferred embodiment of a method according to the present
invention. In transient expression assays which are commonly taking
place about 20-50 hours post transfection, the transfected vectors
are maintained as episomal elements and are not yet integrated into
the genome. Suitable media and culture methods for mammalian cell
lines are well-known in the art, as described in U.S. Pat. No.
5,633,162 for instance. Examples of standard cell culture media for
laboratory flask or low density cell culture and being adapted to
the needs of particular cell types are for instance: Roswell Park
Memorial Institute (RPMI) 1640 medium (Morre, G., The Journal of
the American Medical Association, 199, p. 519 f. 1967), L-15 medium
(Leibovitz, A. et al., Amer. J. of Hygiene, 78, 1p. 173 ff, 1963),
Dulbecco's modified Eagle's medium (DMEM), Eagle's minimal
essential medium (MEM), Ham's F12 medium (Ham, R. et al., Proc.
Natl. Acad. Sc. 53, p 288 ff. 1965) or Iscoves' modified DMEM
lacking albumin, transferrin and lecithin (Iscoves et al., J. Exp.
med. 1, p. 923 ff., 1978). For instance, Ham's F10 or F12 media
were specially designed for CHO cell culture. Other media specially
adapted to CHO cell culture are described in EP-481 791. It is
known that such culture media can be supplemented with fetal bovine
serum (FBS, also called fetal calf serum FCS), the latter providing
a natural source of a plethora of hormones and growth factors. The
cell culture of mammalian cells is nowadays a routine operation
well-described in scientific textbooks and manuals, it is covered
in detail e.g. in R. Ian Fresney, Culture of Animal cells, a
manual, 4th edition, Wiley-Liss/N.Y., 2000.
[0027] Preferably, the cell culture medium according to the present
invention is devoid of fetal calf serum (FCS or FBS), which then is
being termed `serum-free`. Cells in serum-free medium generally
require insulin and transferrin in a serum-free medium for optimal
growth. Transferrin may at least partially be substituted by
non-peptide chelating agents or siderophores such as tropolone as
described in WO 94/02592 or increased levels of a source of
anorganic iron favorably in conjunction with antioxidants such as
vitamin C. Most cell lines require one or more of synthetic growth
factors (comprising recombinant polypeptides), including e.g.
epidermal growth factor (EGF), fibroblast growth factor (FGF),
insulin like growth factors I and II (IGFI, IGFII), etc. Other
classes of factors which may be necessary include: prostaglandins,
transport and binding proteins (e.g. ceruloplasmin, high and low
density lipoproteins, bovine serum albumin (BSA)), hormones,
including steroid-hormones, and fatty acids. Polypeptide factor
testing is best done in a stepwise fashion testing new polypeptide
factors in the presence of those found to be growth stimulatory.
Those growth factors are synthetic or recombinant. There a several
methodological approaches well-known in animal cell culture, an
exemplary being described in the following. The initial step is to
obtain conditions where the cells will survive and/or grow slowly
for 3-6 days after transfer from serum-supplemented culture medium.
In most cell types, this is at least in part a function of inoculum
density. Once the optimal hormone/growth factor/polypeptide
supplement is found, the inoculum density required for survival
will decrease. In a more preferred embodiment, the cell culture
medium is protein-free, that is free both of fetal serum and
individual protein growth factor supplements or other protein such
as recombinant transferrin.
[0028] A possible embodiment of one method of the present
invention, namely expression and harvest of the recombinant product
protein, is high-density growth of the animal host cells e.g. in an
industrial fed-batch bioreactor. Conventional downstream processing
may then be applied. Consequently, a high-density growth culture
medium has to be employed. Such high-density growth media can
usually be supplemented with nutrients such as all amino acids,
energy sources such as glucose in the range given above, inorganic
salts, vitamins, trace elements (defined as inorganic compounds
usually present at final concentrations in the micromolar range),
buffers, the four nucleosides or their corresponding nucleotides,
antioxidants such as Glutathione (reduced), Vitamine C and other
components such as important membrane lipids, e.g. cholesterol or
phosphatidylcholine or lipid precursors, e.g. choline or inositol.
A high-density medium will be enriched in most or all of these
compounds, and will, except for the inorganic salts based on which
the osmolarity of the essentially isotonic medium is regulated,
comprise them in higher amounts (fortified) than the afore
mentioned standard media as can be incurred from GB2251 249 in
comparison with RPMI 1640. Preferably, a high-density culture
medium according to the present invention is balancedly fortified
in that all amino acids except for Tryptophane are in excess of 75
mg/l culture medium. Preferably, in conjunction with the general
amino acid requirement, Glutamine and/or Asparagine are in excess
of 1 g/l, more preferably of 2 g/l of high-density culture medium.
In the context of the present invention, high-density cell culture
is defined as a population of animal cells having temporarily a
density of viable cells of at least or in excess of 10.sup.5
cells/ml, preferably of at least or in excess of 10.sup.6 cells/ml,
and which population has been continously grown from a single cell
or inoculum of lower viable cell density in a cell culture medium
in a constant or increasing culture volume.
[0029] In a further prefered embodiment, the fed-batch culture is a
culture system wherein at least Glutamine, optionally with one or
several other amino acids, preferably glycine, is fed to the cell
culture as described in GB2251249 for maintaing their concentration
in the medium, apart from controlling glucose concentration by
spearate feed. More preferably, the feed of glutamine and
optionally one or several other amino acids is combined with
feeding one or more energy sources such as glucose to the cell
culture as described in EP-229 809-A. Feed is usually initiated at
25-60 hours after start of the culture; for instance, it is useful
to start feed when cells have reached a density of about 10.sup.6
cells/ml. It is well known in the art that in cultured animal
cells, `glutaminolysis` (McKeehan et al., 1984, Glutaminolysis in
animal cells,in: Carbohydrate Metabolism in Cultured Cells, ed. M.
J. Morgan, Plenum Press, New York, pp. 11-150) may become an
important source of energy during growth phase. The total glutamine
and/or asparagine feed (for substitution of glutamine by
asparagine, see Kurano, N. et al., 1990, J. Biotechnology 15,
113-128) is usually in the range from 0.5 to 10 g per l, preferably
from 1 to 2 g per l culture volume; other amino acids that can be
present in the feed are from 10 to 300 mg total feed per litre of
culture, in particular glycine, lysine, arginine, valine,
isoleucine and leucine are usually fed at higher amounts of at
least 150 to 200 mg as compared to the other amino acids. The feed
can be added as shot-addition or as contionusly pumped feed,
preferably the feed is almost continously pumped into the
bioreactor. It goes without saying that the pH is carefully
controlled during fed-batch cultivation in a bioreactor at an
approximately physiological pH optimal for a given cell line by
addition of base or buffer. When glucose is used as an energy
source the total glucose feed is usually from 1 to 10, preferably
from 3 to 6 grams per litre of the culture. Apart from inclusion of
amino acids, the feed preferably comprises a low amount of choline
in the range of 5 to 20 mg per litre of culture. More preferably,
such feed of choline is combined with supplementation of
ethanolamine essentially as described in U.S. Pat. No. 6,048,728,
in particular in combination with feeding glutamine. It goes
without saying that upon use of the GS-marker system, lower amounts
of glutamine will be required as compared to a non-GS expression
system since accumulation of excessive glutamine in addition to the
endogenously produced would give rise to ammonia production and
concomittant toxicity. For GS, glutamine in the medium or feed is
mostly substituted by its equivalents and/or precursors, that is
asparagine and/or glutamate.
[0030] It is a further, independent object of the present invention
to devise an expression vector comprising at least a (first)
transcription unit for a product gene, giving rise to product
protein upon expression in a host cell, and which transcription
unit is under the control of the mouse Cytomegalovirus promoter
(mCMV promoter), and further comprising a second transcription unit
comprising a glutamine synthetase (GS) marker gene. Such a product
gene, or gene of interest (GOI) as it may be termed, can be e.g. an
immunoglobulin coding sequence. A glutamine synthetase marker gene
is any enzymatically active GS coding sequence, be it a natural
gene sequence or a variant thereof. The above definitions of
`functional variant` as set forth above apply here as well
including the preferred ranges of sequence homology. Preferably,
the GS marker gene is a mammalian GS marker gene or derived
thereof. Surprisingly, such expression vector allows for much
higher transfection rates upon transfection in CHO cells than does
e.g. an expression vector in which the first transcription unit
harboring the gene of interest is under control of the hCMV
promoter. This despite the fact that in CHO cells, transcriptional
activity of the mCMV promoter is much higher than that of hCMV
promoter; usually it is believed that upon transfection, higher
metabolic load reduces clonal survival upon transfection, resulting
in lower numbers of transfectants. Thus the effect can not be
correlated in an obvious manner with the amount or unexpected
toxicity of product protein expressed, the latter possibly
adversely affecting growth of transfectants. Indeed, the finding is
the very opposite of any expectation of a skilled person.
[0031] Further objects according to the present invention are
animal host cells, in particular CHO cells, transfected with such
an expression vector which vector can be maintained episomally or
can be stably integrated in the genome and a respective
transfection method. Likewise, transfection of animal cells, in
particular CHO cells, with two or more gene fragments giving rise
in-vivo to functional equivalents of the transcription units of the
present object of the invention, is within the definition of such
transfected host cells. Preferably, said host cells are stably
transfected cells, meaning that the first and second transcription
unit are chromosomally integrated.
[0032] A further object is the use of mCMV promoter to enhance
transfection rate in CHO cells, preferably when using an expression
vector comprising at least a first transcription unit for a product
gene which first unit is giving rise to product protein upon
expression in a host cell and which first transcription unit is
further under the control of the mouse Cytomegalovirus promoter
(mCMV promoter), and further comprising a second transcription unit
comprising a glutamine synthetase (GS) marker gene. It may also be
possible to transfect the first and second expression borne on
different vectors, or as isolated gene fragments harboring
individual expression units. Further, it may be possible to
transfect a CHO cell that is already recombinant for and expresses
GS with a first transcription unit harboring mCMV. According to the
present invention, `enhancing transfection rate` is defining by
comparing transfection rate in the presence of the mCMV promoter
and expression vector according to the present invention with the
transfection rate of the same expression vector and host cell under
identical transfection and cell culture conditions except that in
the expression vector, the mCMV promoter is substituted to the
hCMV-first intron enhancer/promoter construct as defined in U.S.
Pat. No. 5,658,759 and as set forth e.g. in sequence ID. No. 3 of
the present invention. This hCMV-intron MIE-promoter construct, for
a given identical product gene, serves as a standard for
determining the claimed effect of enhanced transfection rates.
Preferably, use of mCMV promoter results in at least 10-times
enhanced transfection rate.
[0033] All relevant definitions given further above apply likewise
to the present, independent objects of the invention. It must be
stressed that the present object of the invention does not require
the presence of the murine IgG 2A targetting sequence as a
prerequisite.
[0034] Murine cytomegalovirus (mCMV) is a member of the highly
diverse group of herpesviridae. Even amongst cytomegaloviruses of
different host species there can be wide variation. For example,
mCMV differs considerably from the human cytomegalovirus (hCMV)
with respect to biological properties, immediate early (IE) gene
organization, and overall nucleotide sequence. The 235-kbp genome
of mCMV also lacks large internal and terminal repeat
characteristics of hCMV. Accordingly, no isomeric forms of the MCMV
genome exist (Ebeling, A. et al., (1983), J. Virol. 47, 421-433;
Mercer, J. A. et al., (1983), Virology 129, 94-106). According to
the present invention, it is possible to employ the promoter region
essentially corresponding to a large approx. 2.1 kb PstI fragment
described in U.S. Pat. No. 4,968,615 or any functional fragment
thereof. In a more preferred embodiment, the mCMV promoter fragment
employed comprises the transcription start site (+0) and extends
upstream to about position -500. Surprisingly, such fragment has
been found to promote stronger expression than a promoter cassette
extending 800 bp further upstream beyond position -500. In a most
preferred embodiment, a core promoter region is employed that
extends from the transcription start site upstream but to the Xho I
restriction site at about position -150 from the natural
transcription start site or even extending but to position -100
upstream from the natural transcriptions start site. It goes
without saying that the transcription start site might be
engineered in order to comprise a suitable restriction site for
insertion of the recombinant product gene.
[0035] According to the present invention, it is also possible that
the first transcription unit that is under control of the mCMV
promoter harbors at least one intron sequence. Such measure is
well-known in the art for stabilising RNA transcripts and for
promoting efficient protein synthesis from the corresponding MRNA.
For efficient protein synthesis without having regard to the
claimed effect on transfection rate, it is however not advisable to
include the first, natural intron of mCMV in the mCMV promoter
construct. In contrast to the situation with hCMV promoter (cf.
U.S. Pat. No. 5,591,639), such natural first intron of mCMV was
found to decrease expression of a recombinant gene from the mCMV
promoter and is therefore excluded in a further preferred
embodiment.
[0036] Examples of preferred, possible embodiments of GS marker
gene cassettes are given in the sequence listings. Seq IDs No. 1
(pEE 15.1 hCMV/GFP+hot spot)+2 (pEE 14.4 hCMV/GFP) give examples of
suitable GS-gene cassettes that are expressed from the SV40 (early
and late, respectively) promoter, a weak to medium level promoter,
further comprising an expression cassette for GFP (Green
fluorescent protein) that is under control of the hCMV promoter.
Seq. ID No. 1 describes a GS cDNA sequence described in more detail
in the figure legend of FIG. 3, under control of the SV40 early
promoter. Seq. ID No. 2 specifies an artifical GS-minigene cassette
comprising an intron that is under control of the SV40 late
promoter. CHO cells are not naturally glutamine auxothropic,
therefore selection schemes as e.g. described in Cockett et al.,
1990, High level expression of tissue inhibitor of
metalloproteinases in Chinese Hamster Ovary (CHO) cells using
Glutamine synthetase gene amplification, Bio/Technology 8: 662-667,
can be applied. Examples of suitable transfection methods for CHO
cells are equally given therein; it is possible to employ e.g.
classic calcium phosphate precipitation or more modern lipofection
techniques. Transfection rate is routinely defined as the number of
positively transfected cells (transient transfection) or clones
(stable transfection after selection period) obtained from a pool
of cells subjected to transfection. The purported effect of the
present object of invention can be seen e.g. by transfecting CHO-K1
cells by lipofection (any commercial s reagent and manufacturers
protocol) with the plasmids of either Seq. ID No. 3 (pEE 12.4
hCMV-GFP+SV40 early promoter/GS cDNA) or Seq. ID No. 4 (pEE 12.4
mCMV-GFP +SV40 early promoter/GS cDNA). Transfected cells may be
grown in any conventional culture medium. The culture medium may be
a fetal serum-supplemented or serum-free medium as has been defined
above. Preferably, the cell culture medium is a serum-supplemented
medium, more preferably a cell culture medium that has been
supplemented with at least 1% (v/v) fetal serum, most preferably
with at least 5% (v/v) fetal serum such as fetal calf serum or
fetal bovine serum. In another preferred embodiment, the
transfection method carried out is electroporation.
EXPERIMENTS
Experiment 1
Transient and Stable Expression of GFP Vector Comprising Hot Spot
Sequence in CHO-K1 Cells
[0037] CHO-K1 cells (ATCC CCL-61) were adapted and cultured in
normal cell culture medium GMEM-S (Gibco, UK) with 10% FCS.--For GS
selection, the medium must be completely free of glutamine as set
forth in table 1 below; this necessitates use of dialysed FCS.--All
culturing was carried out in shake flask at 36.5.degree. C. with
orbital shaking at 125 rpm. Lipofectin (Superfectin.TM.,Gibco, UK)
was used for transfection and green fluorescence of transfectant
pool was measured in a FACS with excitation at 488 nm. For every
GS/GFP vector construct, transfection was carried out independently
five times, all data being the average from five independently
analyzed pools. Starting with transient transfectants 48 h
post-transfection, the top scoring 10% highly expressing cells of
the viable cell pool in the cell count vs. fluorescence diagram
were selected to determine mean fluorescence (FIG. 1). Viable cell
population has been preselected by gating in the Forward vs.
sideward scatter diagram.
[0038] For generating stable transfectants, GS marker was selected
24 hours post-transfection by supplementing the glutamine-free
medium with 25 .mu.M MSX (methionine sulphoximine, Crockett et al.,
ibd.) and continuing cell culture with regular splitting of
cultures for 26 days. Note the impact of medium levels of other
amino acids on the potency of MSX for selection, see Bebbington et
al., U.S. Pat. No. 5,827,739. Flurorescence analysis was then
performed again as outlined above (FIG. 2).
[0039] Untransfected cells served as negative control. The hot spot
vector (pEE 15.1 `hCMV+hot spot`) driving expression of GFP under
control of the hCMV promoter comprising the first complete intron
of CMV is given in Seq. ID No. 1 and essentially is the pEE 15.1
vector shown in FIG. 3 into which the GFP sequence was inserted
into the Eco RI restriction site in the polylinker. pEE 12.4 `hCMV`
corresponding to Seq. ID No. 3 is identical to pEE 15.1 `hCMV+hot
spot` except that it does not comprise the 5.1 kb Bam H1 fragment
harboring the IgA 2A sequence. pEE 12.4 served as a vector control.
A further vector control pEE 12.4 `hCMV(Kozak-)` was generated by
mutating the Kozak sequence of the cloning site coninciding with
the translation start site (GCCGCCACCATGG) to a frameshifted
functional Kozak sequence that (ACCATGGGTCCATGG) by primer directed
mutagensis (Sambrook et al., Molecular cloning, Cold Spring Harbor
1983), attentuating the original Kozak and translation start site.
The vector of Seq. ID No. 1 was further engineered to delete the
400 bp modulator region of hCMV enhancer portion, deleting the
enhancer elements upstream of -750 from the transcription start
site, giving rise to pEE 15.1 `hCMV(mod-)/GS cDNA`. By exchange of
the GScDNA cassette of pEE 15.1 (s. FIG. 3) with the GS minigene of
pEE 14.4 `hCMV(mod-)`/GFP, corresponding to Seq. ID No. 2, the
vector pEE 15.1 `hCMV(mod-)/GS minigene` was created. Thus all
transfected cells harbored a plasmid vector comprising the GFP
coding sequence. The GS minigene contains a single, first intron of
the GS gene and about 1 kb of 3' flanking DNA under the control of
the SV40 late promoter; the 3' part of the genomic GS DNA is
believed to cause a higher copy-number of vector DNA and thus of GS
in transfected cells (see U.S. Pat. No. 4,770,359, Bebbington et
al.). Whereas all hCMV vectors employed in the present study
express the GS maker gene from its cDNA sequence, use of the GS
minigene was included as a further control in order to exclude
potential effects of GS copy number and expression level.
[0040] For generation and expression analysis of stably transfected
CHO cells, transfections were performed with linearized hot spot
vector pEE 15.1 `hCMV+hot spot` vector. Sal I linearized plasmid
was cut in the IgA 2A comprising sequence portion, free DNA ends
potentially stimulating recombination with genomic regions sharing
a certain degree of homology with the flanking DNA portions,
testing for potential targetting effects of murine IgG 2A in
hamster CHO cells. Pvu I cut in the bacterial lactamase marker gene
and therefore could promote but heterologous random recombination.
Indeed, the mean fluorescence was higher in the Pvu I linearized
transfectants showing both some influence of vector linearization
as well as that targetting to immunoglobuline loci in CHO cells may
not account for the effect of the present invention. In addition,
the effect of enhanced promoter activity was consistingly observed
in transiently transfected cell populations, nicely correlating
with relative strength of individual vector constructs. Clearly,
genomic integration is not involved at this early stage of
transfection.
[0041] FIG. 3 shows vector pEE 15.1 of approximately 12 830 bp. A
detailed description of the GS marker and the hCMV-p/intron
expression cassette can be found in U.S. Pat. No. 5,827,739 and
U.S. Pat. No. 5,591,639. pEE 15.1.is a possible embodiment of an
expression vector according to the present invention, except that
the DNA sequence coding for the recombinant product protein has not
yet been inserted in the polylinker site. The complete 13535 bp
sequence of the pEE 15.1 construct harboring GFP is given in Seq.
ID No. 1: Therein, the GFP coding sequence was inserted in-frame in
the Eco R I restriction site centered at base position 12 814; the
introduction of the unique restriction site harboring the ATG start
codon and optimizing the Kozak sequence environment of the start
codon is described in detail in U.S. Pat. No. 5,591,639. Thus, the
expression of GFP protein is under control of the hCMV-major
immediate early gene promoter (HCMV-MIE or hCMV for short)
immediately followed by the first intron of hCMV-MIE gene followed
by the Nco I site (s. U.S. Pat. No. 5,591,639).
[0042] Polyadenlyation is ensured by the SV40 poly A site further
downstream of the polylinker insertion site. pEE 15.1 further
harbors a cDNA sequence coding for glutamine synthetase (GS) from
hamster that is under control of the SV40 early promoter and is
followed by an SV40 intron+poly A sequence. The IgG 2A gene locus
or `hot spot` sequence (hatched boxes CH1, Hi, CH2, CH3, M1, M2
standing for Heavy chain constant region, hinge, membrane anchor)
is the 5.1 kb BamH I fragment of the murine IgG 2A locus already
described in WO 9517516 and the references cited therein. Unique
restriction sites Pvu I and Sal I are shown.
Experiment 2
Electroporation of CHO Cells With mCMV p12.4 -GFP Construct (Seq.
ID No.4)
[0043] Attached CHO-K1 cells (ATCC CCL-61) were cultured in
Iscoves' DMEM medium essentially as described in EP-481 791
comprising 2 mM Glutamine which was further supplemented with 10%
FCS. Optionally, the G-MEM medium stated in table 1 and further
comprising 2 mM Glutamine could be used prior to GS marker
selection as in experiment 1. The cells were detached, pelleted and
resuspended twice in serum-free medium, finally at a density of
5.3.times.10.sup.6 cells/ml. Per 750 .mu.l electroporation batch, a
total of 4.times.10.sup.6 cells was electroporated. Electroporation
was carried out as described in Methods in Molecular Biology, ed.
JA Nickoloff ed, Humana Press 1995, Vol. 48/Chap. 8: Animal cell
electroporation and electrofusion protocols. p12.4 mCMV-GFP vector
DNA (sequence ID No. 4) was linearized. 50 .mu.l (20 .mu.g) DNA
were added to 750 .mu.l cells in electroporation cuvette and
electroporate--300 Volts/750 .mu.Fd--expecting an electorporation
time of around 12-14 msec. Following electroporation 800 .mu.l
volume of cells was transferred into 25 ml of modified Glasgow-MEM
(GMEM, Gibco) culture medium for GS selection (comprising 10% fetal
serum but no glutamine, for details see table 1 ) in a T75 flask.
Divide into 2.times.T75 flasks by moving 12.9 mls into a second
flask and incubate overnight at 37.degree. C. in 10% CO.sub.2
[0044] On the next day 37.5 ml of GS-selection GMEM culture medium
supplemented with 10% FBS+33.3 .mu.M MSX (methionine sulphoximine)
were added. Thus MSX was finally .about.25 .mu.M. Transfectants
were counted after further incubation for 26 days by colony count
per flask. Upon microscopic inspection in a standard inverted
microscope for inspection of culture flasks, positive colonies
brightly lit up in light green and could be easily counted.
[0045] The mCMV construct of Seq. ID No. 4 yielded up to 20 times
more foci than did cells that were transfected in parallel with the
hCMV construct of Seq. ID No. 3. The vector constructs only
differed in the CMV promoter elements driving GFP expression, the
remaining vector parts of the vectors were identical (including
GS-marker; cDNA GS-marker cassette of p12.4). If cells were diluted
out into 96 well plates immediately following transfection, many
more colonies come up from mCMV transfected cells (>400
colonies) than from hCMV transfected cells (about 45 colonies).
TABLE-US-00001 TABLE 1 Medium for GS selection A. Stock Solutions
1. Double distilled water autoclaved in 400 ml aliquots 2. 10
.times. Glasgow MEM (GMEM) without glutamine (GIBCO: 042-2541 in
UK). Store at 4.degree. C. 3. 7.5% sodium bicarbonate (GIBCO:
043-05080 in UK; 670-5080 in US). Store at 4.degree. C. 4. 100
.times. non-essential amino acids (NEAA) (GIBCO: 043-01140 in UK;
320-1140 in US). Store at 4.degree. C. 5. 100 .times. Glutamate +
Asparagine (G + A): add 600 mg glutamic acid and 600 mg asparagines
(Sigma). Make up to 100 ml in distilled water and sterilize by
passing through a sterile 2 .mu.m filter (Nalgene). Store at
4.degree. C. 6. 100 mM sodium pyruvate (GIBCO: 043-01360 in UK;
320-1360 in US) 7. 50 .times. nucleosides: 35 mg adenosine 35 mg
guanosine 35 mg cytidine 35 mg uridine 12 mg thymidine (each from
Sigma). Make up to 100 ml with water, filter sterilise and store at
-20.degree. C. in 10 ml aliquots. 8. Dialysed PCS (GIBCO:
014-06300). Heat inactivate at 56.degree. C. for 30 min and store
at -20.degree. C. It is essential to use dialysed FCS when using GS
selection. 9. Penicilin-streptomycin at 5000 units/ml (P/S: GIBCO:
043-05070 in UK; 600-5070 in US). 10. 100 mM L.MSX (Sigma): prepare
18 mg/ml solution in PBS. Filter sterilise and store at -20.degree.
C.
B.Medium Preparation
[0046] Add the following in the order given using aseptic technique
to make GMEM-S medium TABLE-US-00002 1. Water 400 ml 2. 10 .times.
GMEM 50 ml 3. Sodium bicarbonate 18.1 ml 4. NEAA 5 ml 5. G + A 5 ml
6. Sodium pyruvate 5 ml 7. Nucleosides 10 ml 8. Dialysed FCS 50 ml
9. Penicillin-streptomycin 5 ml
GMEM-S contains the non-essential amino acids, alanine, aspartate,
glycine, proline and serine (100 .mu.M), glutamate and asparagines
(500 .mu.M), and adenosine, guanosine, cytidine and uridine (30
.mu.M), and thymidine (10 .mu.M).
Sequence CWU 1
1
4 1 6679 DNA Hamster sp. misc_feature Seq. ID. No. 4 circular
plasmid GS vector p12.4 short mCMV-GFP / clone 3 1 gaattcattg
atcataatca gccataccac atttgtagag gttttacttg ctttaaaaaa 60
cctcccacac ctccccctga acctgaaaca taaaatgaat gcaattgttg ttgttaactt
120 gtttattgca gcttataatg gttacaaata aagcaatagc atcacaaatt
tcacaaataa 180 agcatttttt tcactgcatt ctagttgtgg tttgtccaaa
ctcatcaatg tatcttatca 240 tgtctggcgg ccgcgacctg caggcgcaga
actggtaggt atggaagatc cctcgagatc 300 cattgtgctg gcggtaggcg
agcagcgcct gcctgaagct gcgggcattc ccagtcagaa 360 atgagcgcca
gtcgtcgtcg gctctcggca ccgaagtgct atgattctcc gccagcatgg 420
cttcggccag tgcgtcgagc agcgcccgct tgttcctgaa gtgccagtaa agcgccggct
480 gctgaacccc caaccgttcc gccagtttgc gtgtcgtcag accgtctacg
ccgacctcgt 540 tcaacaggtc cagggcggca cggatcactg tattcggctg
caactttgtc atgcttgaca 600 ctttatcact gataaacata atatgtccac
caacttatca gtgataaaga atccgcgcca 660 gcacaatgga tctcgaggtc
gagggatctc tagaggatcc atattcgcgg gcatcaccgg 720 cgccacaggt
gcggttgctg gcgcctatat cgccgacatc accgatgggg aagatcgggc 780
tcgccacttc gggctcatga gcgcttgttt cggcgtgggt atggtggcag gccccgtggc
840 cgggggactg ttgggcgcca tctccttgca tgcaccattc cttgcggcgg
cggtgctcaa 900 cggcctcaac ctactactgg gctgcttcct aatgcaggag
tcgcataagg gagagcgtcg 960 acctcgggcc gcgttgctgg cgtttttcca
taggctccgc ccccctgacg agcatcacaa 1020 aaatcgacgc tcaagtcaga
ggtggcgaaa cccgacagga ctataaagat accaggcgtt 1080 tccccctgga
agctccctcg tgcgctctcc tgttccgacc ctgccgctta ccggatacct 1140
gtccgccttt ctcccttcgg gaagcgtggc gctttctcat agctcacgct gtaggtatct
1200 cagttcggtg taggtcgttc gctccaagct gggctgtgtg cacgaacccc
ccgttcagcc 1260 cgaccgctgc gccttatccg gtaactatcg tcttgagtcc
aacccggtaa gacacgactt 1320 atcgccactg gcagcagcca ctggtaacag
gattagcaga gcgaggtatg taggcggtgc 1380 tacagagttc ttgaagtggt
ggcctaacta cggctacact agaagaacag tatttggtat 1440 ctgcgctctg
ctgaagccag ttaccttcgg aaaaagagtt ggtagctctt gatccggcaa 1500
acaaaccacc gctggtagcg gtggtttttt tgtttgcaag cagcagatta cgcgcagaaa
1560 aaaaggatct caagaagatc ctttgatctt ttctacgggg tctgacgctc
agtggaacga 1620 aaactcacgt taagggattt tggtcatgag attatcaaaa
aggatcttca cctagatcct 1680 tttaaattaa aaatgaagtt ttaaatcaat
ctaaagtata tatgagtaaa cttggtctga 1740 cagttaccaa tgcttaatca
gtgaggcacc tatctcagcg atctgtctat ttcgttcatc 1800 catagttgcc
tgactccccg tcgtgtagat aactacgata cgggagggct taccatctgg 1860
ccccagtgct gcaatgatac cgcgagaccc acgctcaccg gctccagatt tatcagcaat
1920 aaaccagcca gccggaaggg ccgagcgcag aagtggtcct gcaactttat
ccgcctccat 1980 ccagtctatt aattgttgcc gggaagctag agtaagtagt
tcgccagtta atagtttgcg 2040 caacgttgtt gccattgcta caggcatcgt
ggtgtcacgc tcgtcgtttg gtatggcttc 2100 attcagctcc ggttcccaac
gatcaaggcg agttacatga tcccccatgt tgtgcaaaaa 2160 agcggttagc
tccttcggtc ctccgatcgt tgtcagaagt aagttggccg cagtgttatc 2220
actcatggtt atggcagcac tgcataattc tcttactgtc atgccatccg taagatgctt
2280 ttctgtgact ggtgagtact caaccaagtc attctgagaa tagtgtatgc
ggcgaccgag 2340 ttgctcttgc ccggcgtcaa tacgggataa taccgcgcca
catagcagaa ctttaaaagt 2400 gctcatcatt ggaaaacgtt cttcggggcg
aaaactctca aggatcttac cgctgttgag 2460 atccagttcg atgtaaccca
ctcgtgcacc caactgatct tcagcatctt ttactttcac 2520 cagcgtttct
gggtgagcaa aaacaggaag gcaaaatgcc gcaaaaaagg gaataagggc 2580
gacacggaaa tgttgaatac tcatactctt cctttttcaa tattattgaa gcatttatca
2640 gggttattgt ctcatgagcg gatacatatt tgaatgtatt tagaaaaata
aacaaatagg 2700 ggttccgcgc acatttcccc gaaaagtgcc acctgacgtc
taagaaacca ttattatcat 2760 gacattaacc tataaaaata ggcgtatcac
gaggccctga tggctctttg cggcacccat 2820 cgttcgtaat gttccgtggc
accgaggaca accctcaaga gaaaatgtaa tcacactggc 2880 tcaccttcgg
gtgggccttt ctgcgtttat aaggagacac tttatgttta agaaggttgg 2940
taaattcctt gcggctttgg cagccaagct agatccggct gtggaatgtg tgtcagttag
3000 ggtgtggaaa gtccccaggc tccccagcag gcagaagtat gcaaagcatg
catctcaatt 3060 agtcagcaac caggtgtgga aagtccccag gctccccagc
aggcagaagt atgcaaagca 3120 tgcatctcaa ttagtcagca accatagtcc
cgcccctaac tccgcccatc ccgcccctaa 3180 ctccgcccag ttccgcccat
tctccgcccc atggctgact aatttttttt atttatgcag 3240 aggccgaggc
cgcctcggcc tctgagctat tccagaagta gtgaggaggc ttttttggag 3300
gcctaggctt ttgcaaaaag ctagcttggg gccaccgctc agagcacctt ccaccatggc
3360 cacctcagca agttcccact tgaacaaaaa catcaagcaa atgtacttgt
gcctgcccca 3420 gggtgagaaa gtccaagcca tgtatatctg ggttgatggt
actggagaag gactgcgctg 3480 caaaacccgc accctggact gtgagcccaa
gtgtgtagaa gagttacctg agtggaattt 3540 tgatggctct agtacctttc
agtctgaggg ctccaacagt gacatgtatc tcagccctgt 3600 tgccatgttt
cgggacccct tccgcagaga tcccaacaag ctggtgttct gtgaagtttt 3660
caagtacaac cggaagcctg cagagaccaa tttaaggcac tcgtgtaaac ggataatgga
3720 catggtgagc aaccagcacc cctggtttgg aatggaacag gagtatactc
tgatgggaac 3780 agatgggcac ccttttggtt ggccttccaa tggctttcct
gggccccaag gtccgtatta 3840 ctgtggtgtg ggcgcagaca aagcctatgg
cagggatatc gtggaggctc actaccgcgc 3900 ctgcttgtat gctggggtca
agattacagg aacaaatgct gaggtcatgc ctgcccagtg 3960 ggaactccaa
ataggaccct gtgaaggaat ccgcatggga gatcatctct gggtggcccg 4020
tttcatcttg catcgagtat gtgaagactt tggggtaata gcaacctttg accccaagcc
4080 cattcctggg aactggaatg gtgcaggctg ccataccaac tttagcacca
aggccatgcg 4140 ggaggagaat ggtctgaagc acatcgagga ggccatcgag
aaactaagca agcggcaccg 4200 gtaccacatt cgagcctacg atcccaaggg
gggcctggac aatgcccgtg gtctgactgg 4260 gttccacgaa acgtccaaca
tcaacgactt ttctgctggt gtcgccaatc gcagtgccag 4320 catccgcatt
ccccggactg tcggccagga gaagaaaggt tactttgaag accgcggccc 4380
ctctgccaat tgtgacccct ttgcagtgac agaagccatc gtccgcacat gccttctcaa
4440 tgagactggc gacgagccct tccaatacaa aaactaatta gactttgagt
gatcttgagc 4500 ctttcctagt tcatcccacc ccgccccaga gagatctttg
tgaaggaacc ttacttctgt 4560 ggtgtgacat aattggacaa actacctaca
gagatttaaa gctctaaggt aaatataaaa 4620 tttttaagtg tataatgtgt
taaactactg attctaattg tttgtgtatt ttagattcca 4680 acctatggaa
ctgatgaatg ggagcagtgg tggaatgcct ttaatgagga aaacctgttt 4740
tgctcagaag aaatgccatc tagtgatgat gaggctactg ctgactctca acattctact
4800 cctccaaaaa agaagagaaa ggtagaagac cccaaggact ttccttcaga
attgctaagt 4860 tttttgagtc atgctgtgtt tagtaataga actcttgctt
gctttgctat ttacaccaca 4920 aaggaaaaag ctgcactgct atacaagaaa
attatggaaa aatattctgt aacctttata 4980 agtaggcata acagttataa
tcataacata ctgttttttc ttactccaca caggcataga 5040 gtgtctgcta
ttaataacta tgctcaaaaa ttgtgtacct ttagcttttt aatttgtaaa 5100
ggggttaata aggaatattt gatgtatagt gccttgacta gagatcataa tcagccatac
5160 cacatttgta gaggttttac ttgctttaaa aaacctccca cacctccccc
tgaacctgaa 5220 acataaaatg aatgcaattg ttgttgttaa cttgtttatt
gcagcttata atggttacaa 5280 ataaagcaat agcatcacaa atttcacaaa
taaagcattt ttttcactgc attctagttg 5340 tggtttgtcc aaactcatca
atgtatctta tcatgtctgg atctctagct tcgtgtcaag 5400 gacggtgagg
cgcgcctact gagtcattag ggactttcca atgggttttg cccagtacat 5460
aaggtcaata ggggtgaatc aacaggaaag tcccattgga gccaagtaca ctgagtcaat
5520 agggactttc cattgggttt tgcccagtac aaaaggtcaa tagggggtga
gtcaatgggt 5580 ttttcccatt attggcacgt acataaggtc aataggggtg
agtcattggg tttttccagc 5640 caatttaatt aaaacgccat gtactttccc
accattgacg tcaatgggct attgaaacta 5700 atgcaacgtg acctttaaac
ggtactttcc catagctgat taatgggaaa gtaccgttct 5760 cgagccaata
cacgtcaatg ggaagtgaaa gggcagccaa aacgtaacac cgccccggtt 5820
ttcccctgga aattccatat tggcacgcat tctattggct gagctgcgtt ctacgtgggt
5880 ataagaggcg cgaccagcgt cggtaccgtc gcagtcttcg gtctgaccac
cgtagaacgc 5940 agaagcttgc cgccaccatg gtgagcaagc agatcctgaa
gaacaccggc ctgcaggaga 6000 tcatgagctt caaggtgaac ctggagggcg
tggtgaacaa ccacgtgttc accatggagg 6060 gctgcggcaa gggcaacatc
ctgttcggca accagctggt gcagatccgc gtgaccaagg 6120 gcgcccccct
gcccttcgcc ttcgacatcc tgagccccgc cttccagtac ggcaaccgca 6180
ccttcaccaa gtaccccgag gacatcagcg acttcttcat ccagagcttc cccgccggct
6240 tcgtgtacga gcgcaccctg cgctacgagg acggcggcct ggtggagatc
cgcagcgaca 6300 tcaacctgat cgaggagatg ttcgtgtacc gcgtggagta
caagggccgc aacttcccca 6360 acgacggccc cgtgatgaag aagaccatca
ccggcctgca gcccagcttc gaggtggtgt 6420 acatgaacga cggcgtgctg
gtgggccagg tgatcctggt gtaccgcctg aacagcggca 6480 agttctacag
ctgccacatg cgcaccctga tgaagagcaa gggcgtggtg aaggacttcc 6540
ccgagtacca cttcatccag caccgcctgg agaagaccta cgtggaggac ggcggcttcg
6600 tggagcagca cgagaccgcc atcgcccagc tgaccagcct gggcaagccc
ctgggcagcc 6660 tgcacgagtg ggtgtaata 6679 2 8251 DNA Hamster sp.
misc_feature Seq. ID. No. 3 circular plasmid GS vector p12.4
hCMVp-GFP /clone 13 2 gaattcattg atcataatca gccataccac atttgtagag
gttttacttg ctttaaaaaa 60 cctcccacac ctccccctga acctgaaaca
taaaatgaat gcaattgttg ttgttaactt 120 gtttattgca gcttataatg
gttacaaata aagcaatagc atcacaaatt tcacaaataa 180 agcatttttt
tcactgcatt ctagttgtgg tttgtccaaa ctcatcaatg tatcttatca 240
tgtctggcgg ccgcgacctg caggcgcaga actggtaggt atggaagatc cctcgagatc
300 cattgtgctg gcggtaggcg agcagcgcct gcctgaagct gcgggcattc
ccagtcagaa 360 atgagcgcca gtcgtcgtcg gctctcggca ccgaagtgct
atgattctcc gccagcatgg 420 cttcggccag tgcgtcgagc agcgcccgct
tgttcctgaa gtgccagtaa agcgccggct 480 gctgaacccc caaccgttcc
gccagtttgc gtgtcgtcag accgtctacg ccgacctcgt 540 tcaacaggtc
cagggcggca cggatcactg tattcggctg caactttgtc atgcttgaca 600
ctttatcact gataaacata atatgtccac caacttatca gtgataaaga atccgcgcca
660 gcacaatgga tctcgaggtc gagggatctc tagaggatcc atattcgcgg
gcatcaccgg 720 cgccacaggt gcggttgctg gcgcctatat cgccgacatc
accgatgggg aagatcgggc 780 tcgccacttc gggctcatga gcgcttgttt
cggcgtgggt atggtggcag gccccgtggc 840 cgggggactg ttgggcgcca
tctccttgca tgcaccattc cttgcggcgg cggtgctcaa 900 cggcctcaac
ctactactgg gctgcttcct aatgcaggag tcgcataagg gagagcgtcg 960
acctcgggcc gcgttgctgg cgtttttcca taggctccgc ccccctgacg agcatcacaa
1020 aaatcgacgc tcaagtcaga ggtggcgaaa cccgacagga ctataaagat
accaggcgtt 1080 tccccctgga agctccctcg tgcgctctcc tgttccgacc
ctgccgctta ccggatacct 1140 gtccgccttt ctcccttcgg gaagcgtggc
gctttctcat agctcacgct gtaggtatct 1200 cagttcggtg taggtcgttc
gctccaagct gggctgtgtg cacgaacccc ccgttcagcc 1260 cgaccgctgc
gccttatccg gtaactatcg tcttgagtcc aacccggtaa gacacgactt 1320
atcgccactg gcagcagcca ctggtaacag gattagcaga gcgaggtatg taggcggtgc
1380 tacagagttc ttgaagtggt ggcctaacta cggctacact agaagaacag
tatttggtat 1440 ctgcgctctg ctgaagccag ttaccttcgg aaaaagagtt
ggtagctctt gatccggcaa 1500 acaaaccacc gctggtagcg gtggtttttt
tgtttgcaag cagcagatta cgcgcagaaa 1560 aaaaggatct caagaagatc
ctttgatctt ttctacgggg tctgacgctc agtggaacga 1620 aaactcacgt
taagggattt tggtcatgag attatcaaaa aggatcttca cctagatcct 1680
tttaaattaa aaatgaagtt ttaaatcaat ctaaagtata tatgagtaaa cttggtctga
1740 cagttaccaa tgcttaatca gtgaggcacc tatctcagcg atctgtctat
ttcgttcatc 1800 catagttgcc tgactccccg tcgtgtagat aactacgata
cgggagggct taccatctgg 1860 ccccagtgct gcaatgatac cgcgagaccc
acgctcaccg gctccagatt tatcagcaat 1920 aaaccagcca gccggaaggg
ccgagcgcag aagtggtcct gcaactttat ccgcctccat 1980 ccagtctatt
aattgttgcc gggaagctag agtaagtagt tcgccagtta atagtttgcg 2040
caacgttgtt gccattgcta caggcatcgt ggtgtcacgc tcgtcgtttg gtatggcttc
2100 attcagctcc ggttcccaac gatcaaggcg agttacatga tcccccatgt
tgtgcaaaaa 2160 agcggttagc tccttcggtc ctccgatcgt tgtcagaagt
aagttggccg cagtgttatc 2220 actcatggtt atggcagcac tgcataattc
tcttactgtc atgccatccg taagatgctt 2280 ttctgtgact ggtgagtact
caaccaagtc attctgagaa tagtgtatgc ggcgaccgag 2340 ttgctcttgc
ccggcgtcaa tacgggataa taccgcgcca catagcagaa ctttaaaagt 2400
gctcatcatt ggaaaacgtt cttcggggcg aaaactctca aggatcttac cgctgttgag
2460 atccagttcg atgtaaccca ctcgtgcacc caactgatct tcagcatctt
ttactttcac 2520 cagcgtttct gggtgagcaa aaacaggaag gcaaaatgcc
gcaaaaaagg gaataagggc 2580 gacacggaaa tgttgaatac tcatactctt
cctttttcaa tattattgaa gcatttatca 2640 gggttattgt ctcatgagcg
gatacatatt tgaatgtatt tagaaaaata aacaaatagg 2700 ggttccgcgc
acatttcccc gaaaagtgcc acctgacgtc taagaaacca ttattatcat 2760
gacattaacc tataaaaata ggcgtatcac gaggccctga tggctctttg cggcacccat
2820 cgttcgtaat gttccgtggc accgaggaca accctcaaga gaaaatgtaa
tcacactggc 2880 tcaccttcgg gtgggccttt ctgcgtttat aaggagacac
tttatgttta agaaggttgg 2940 taaattcctt gcggctttgg cagccaagct
agatccggct gtggaatgtg tgtcagttag 3000 ggtgtggaaa gtccccaggc
tccccagcag gcagaagtat gcaaagcatg catctcaatt 3060 agtcagcaac
caggtgtgga aagtccccag gctccccagc aggcagaagt atgcaaagca 3120
tgcatctcaa ttagtcagca accatagtcc cgcccctaac tccgcccatc ccgcccctaa
3180 ctccgcccag ttccgcccat tctccgcccc atggctgact aatttttttt
atttatgcag 3240 aggccgaggc cgcctcggcc tctgagctat tccagaagta
gtgaggaggc ttttttggag 3300 gcctaggctt ttgcaaaaag ctagcttggg
gccaccgctc agagcacctt ccaccatggc 3360 cacctcagca agttcccact
tgaacaaaaa catcaagcaa atgtacttgt gcctgcccca 3420 gggtgagaaa
gtccaagcca tgtatatctg ggttgatggt actggagaag gactgcgctg 3480
caaaacccgc accctggact gtgagcccaa gtgtgtagaa gagttacctg agtggaattt
3540 tgatggctct agtacctttc agtctgaggg ctccaacagt gacatgtatc
tcagccctgt 3600 tgccatgttt cgggacccct tccgcagaga tcccaacaag
ctggtgttct gtgaagtttt 3660 caagtacaac cggaagcctg cagagaccaa
tttaaggcac tcgtgtaaac ggataatgga 3720 catggtgagc aaccagcacc
cctggtttgg aatggaacag gagtatactc tgatgggaac 3780 agatgggcac
ccttttggtt ggccttccaa tggctttcct gggccccaag gtccgtatta 3840
ctgtggtgtg ggcgcagaca aagcctatgg cagggatatc gtggaggctc actaccgcgc
3900 ctgcttgtat gctggggtca agattacagg aacaaatgct gaggtcatgc
ctgcccagtg 3960 ggaactccaa ataggaccct gtgaaggaat ccgcatggga
gatcatctct gggtggcccg 4020 tttcatcttg catcgagtat gtgaagactt
tggggtaata gcaacctttg accccaagcc 4080 cattcctggg aactggaatg
gtgcaggctg ccataccaac tttagcacca aggccatgcg 4140 ggaggagaat
ggtctgaagc acatcgagga ggccatcgag aaactaagca agcggcaccg 4200
gtaccacatt cgagcctacg atcccaaggg gggcctggac aatgcccgtg gtctgactgg
4260 gttccacgaa acgtccaaca tcaacgactt ttctgctggt gtcgccaatc
gcagtgccag 4320 catccgcatt ccccggactg tcggccagga gaagaaaggt
tactttgaag accgcggccc 4380 ctctgccaat tgtgacccct ttgcagtgac
agaagccatc gtccgcacat gccttctcaa 4440 tgagactggc gacgagccct
tccaatacaa aaactaatta gactttgagt gatcttgagc 4500 ctttcctagt
tcatcccacc ccgccccaga gagatctttg tgaaggaacc ttacttctgt 4560
ggtgtgacat aattggacaa actacctaca gagatttaaa gctctaaggt aaatataaaa
4620 tttttaagtg tataatgtgt taaactactg attctaattg tttgtgtatt
ttagattcca 4680 acctatggaa ctgatgaatg ggagcagtgg tggaatgcct
ttaatgagga aaacctgttt 4740 tgctcagaag aaatgccatc tagtgatgat
gaggctactg ctgactctca acattctact 4800 cctccaaaaa agaagagaaa
ggtagaagac cccaaggact ttccttcaga attgctaagt 4860 tttttgagtc
atgctgtgtt tagtaataga actcttgctt gctttgctat ttacaccaca 4920
aaggaaaaag ctgcactgct atacaagaaa attatggaaa aatattctgt aacctttata
4980 agtaggcata acagttataa tcataacata ctgttttttc ttactccaca
caggcataga 5040 gtgtctgcta ttaataacta tgctcaaaaa ttgtgtacct
ttagcttttt aatttgtaaa 5100 ggggttaata aggaatattt gatgtatagt
gccttgacta gagatcataa tcagccatac 5160 cacatttgta gaggttttac
ttgctttaaa aaacctccca cacctccccc tgaacctgaa 5220 acataaaatg
aatgcaattg ttgttgttaa cttgtttatt gcagcttata atggttacaa 5280
ataaagcaat agcatcacaa atttcacaaa taaagcattt ttttcactgc attctagttg
5340 tggtttgtcc aaactcatca atgtatctta tcatgtctgg atctagcttc
gtgtcaagga 5400 cggtgactgc agtgaataat aaaatgtgtg tttgtccgaa
atacgcgttt tgagatttct 5460 gtcgccgact aaattcatgt cgcgcgatag
tggtgtttat cgccgataga gatggcgata 5520 ttggaaaaat cgatatttga
aaatatggca tattgaaaat gtcgccgatg tgagtttctg 5580 tgtaactgat
atcgccattt ttccaaaagt gatttttggg catacgcgat atctggcgat 5640
agcgcttata tcgtttacgg gggatggcga tagacgactt tggtgacttg ggcgattctg
5700 tgtgtcgcaa atatcgcagt ttcgatatag gtgacagacg atatgaggct
atatcgccga 5760 tagaggcgac atcaagctgg cacatggcca atgcatatcg
atctatacat tgaatcaata 5820 ttggccatta gccatattat tcattggtta
tatagcataa atcaatattg gctattggcc 5880 attgcatacg ttgtatccat
atcataatat gtacatttat attggctcat gtccaacatt 5940 accgccatgt
tgacattgat tattgactag ttattaatag taatcaatta cggggtcatt 6000
agttcatagc ccatatatgg agttccgcgt tacataactt acggtaaatg gcccgcctgg
6060 ctgaccgccc aacgaccccc gcccattgac gtcaataatg acgtatgttc
ccatagtaac 6120 gccaataggg actttccatt gacgtcaatg ggtggagtat
ttacggtaaa ctgcccactt 6180 ggcagtacat caagtgtatc atatgccaag
tacgccccct attgacgtca atgacggtaa 6240 atggcccgcc tggcattatg
cccagtacat gaccttatgg gactttccta cttggcagta 6300 catctacgta
ttagtcatcg ctattaccat ggtgatgcgg ttttggcagt acatcaatgg 6360
gcgtggatag cggtttgact cacggggatt tccaagtctc caccccattg acgtcaatgg
6420 gagtttgttt tggcaccaaa atcaacggga ctttccaaaa tgtcgtaaca
actccgcccc 6480 attgacgcaa atgggcggta ggcgtgtacg gtgggaggtc
tatataagca gagctcgttt 6540 agtgaaccgt cagatcgcct ggagacgcca
tccacgctgt tttgacctcc atagaagaca 6600 ccgggaccga tccagcctcc
gcggccggga acggtgcatt ggaacgcgga ttccccgtgc 6660 caagagtgac
gtaagtaccg cctatagagt ctataggccc acccccttgg cttcttatgc 6720
atgctatact gtttttggct tggggtctat acacccccgc ttcctcatgt tataggtgat
6780 ggtatagctt agcctatagg tgtgggttat tgaccattat tgaccactcc
cctattggtg 6840 acgatacttt ccattactaa tccataacat ggctctttgc
cacaactctc tttattggct 6900 atatgccaat acactgtcct tcagagactg
acacggactc tgtattttta caggatgggg 6960 tctcatttat tatttacaaa
ttcacatata caacaccacc gtccccagtg cccgcagttt 7020 ttattaaaca
taacgtggga tctccacgcg aatctcgggt acgtgttccg gacatgggct 7080
cttctccggt agcggcggag cttctacatc cgagccctgc tcccatgcct ccagcgactc
7140 atggtcgctc ggcagctcct tgctcctaac agtggaggcc agacttaggc
acagcacgat 7200 gcccaccacc accagtgtgc cgcacaaggc cgtggcggta
gggtatgtgt ctgaaaatga 7260 gctcggggag cgggcttgca ccgctgacgc
atttggaaga cttaaggcag cggcagaaga 7320 agatgcaggc agctgagttg
ttgtgttctg ataagagtca gaggtaactc ccgttgcggt 7380 gctgttaacg
gtggagggca gtgtagtctg agcagtactc gttgctgccg cgcgcgccac 7440
cagacataat agctgacaga ctaacagact gttcctttcc atgggtcttt tctgcagtca
7500 ccgtccttga cacgaagctt gccgccacca tggtgagcaa gcagatcctg
aagaacaccg 7560 gcctgcagga gatcatgagc ttcaaggtga acctggaggg
cgtggtgaac aaccacgtgt 7620 tcaccatgga gggctgcggc aagggcaaca
tcctgttcgg caaccagctg gtgcagatcc 7680 gcgtgaccaa gggcgccccc
ctgcccttcg ccttcgacat cctgagcccc gccttccagt 7740 acggcaaccg
caccttcacc aagtaccccg aggacatcag cgacttcttc atccagagct 7800
tccccgccgg cttcgtgtac gagcgcaccc tgcgctacga ggacggcggc ctggtggaga
7860 tccgcagcga catcaacctg atcgaggaga tgttcgtgta ccgcgtggag
tacaagggcc 7920 gcaacttccc caacgacggc cccgtgatga agaagaccat
caccggcctg cagcccagct 7980 tcgaggtggt gtacatgaac gacggcgtgc
tggtgggcca ggtgatcctg gtgtaccgcc 8040 tgaacagcgg caagttctac
agctgccaca tgcgcaccct gatgaagagc aagggcgtgg 8100 tgaaggactt
ccccgagtac cacttcatcc agcaccgcct
ggagaagacc tacgtggagg 8160 acggcggctt cgtggagcag cacgagaccg
ccatcgccca gctgaccagc ctgggcaagc 8220 ccctgggcag cctgcacgag
tgggtgtaat a 8251 3 10369 DNA Hamster sp. misc_feature Seq. ID. No.
2 circular plasmid GS-minigene vector p 14.4 DeltaModulator (mod-)
hCMVp-GFP /clone 6 3 gaattcattg atcataatca gccataccac atttgtagag
gttttacttg ctttaaaaaa 60 cctcccacac ctccccctga acctgaaaca
taaaatgaat gcaattgttg ttgttaactt 120 gtttattgca gcttataatg
gttacaaata aagcaatagc atcacaaatt tcacaaataa 180 agcatttttt
tcactgcatt ctagttgtgg tttgtccaaa ctcatcaatg tatcttatca 240
tgtctggcgg ccgcgacctg caggcgcaga actggtaggt atggaagatc cctcgagatc
300 cattgtgctg gcggtaggcg agcagcgcct gcctgaagct gcgggcattc
ccagtcagaa 360 atgagcgcca gtcgtcgtcg gctctcggca ccgaagtgct
atgattctcc gccagcatgg 420 cttcggccag tgcgtcgagc agcgcccgct
tgttcctgaa gtgccagtaa agcgccggct 480 gctgaacccc caaccgttcc
gccagtttgc gtgtcgtcag accgtctacg ccgacctcgt 540 tcaacaggtc
cagggcggca cggatcactg tattcggctg caactttgtc atgcttgaca 600
ctttatcact gataaacata atatgtccac caacttatca gtgataaaga atccgcgcca
660 gcacaatgga tctcgaggtc gagggatctc tagaggatcc atattcgcgg
gcatcaccgg 720 cgccacaggt gcggttgctg gcgcctatat cgccgacatc
accgatgggg aagatcgggc 780 tcgccacttc gggctcatga gcgcttgttt
cggcgtgggt atggtggcag gccccgtggc 840 cgggggactg ttgggcgcca
tctccttgca tgcaccattc cttgcggcgg cggtgctcaa 900 cggcctcaac
ctactactgg gctgcttcct aatgcaggag tcgcataagg gagagcgtcg 960
acctcgggcc gcgttgctgg cgtttttcca taggctccgc ccccctgacg agcatcacaa
1020 aaatcgacgc tcaagtcaga ggtggcgaaa cccgacagga ctataaagat
accaggcgtt 1080 tccccctgga agctccctcg tgcgctctcc tgttccgacc
ctgccgctta ccggatacct 1140 gtccgccttt ctcccttcgg gaagcgtggc
gctttctcat agctcacgct gtaggtatct 1200 cagttcggtg taggtcgttc
gctccaagct gggctgtgtg cacgaacccc ccgttcagcc 1260 cgaccgctgc
gccttatccg gtaactatcg tcttgagtcc aacccggtaa gacacgactt 1320
atcgccactg gcagcagcca ctggtaacag gattagcaga gcgaggtatg taggcggtgc
1380 tacagagttc ttgaagtggt ggcctaacta cggctacact agaagaacag
tatttggtat 1440 ctgcgctctg ctgaagccag ttaccttcgg aaaaagagtt
ggtagctctt gatccggcaa 1500 acaaaccacc gctggtagcg gtggtttttt
tgtttgcaag cagcagatta cgcgcagaaa 1560 aaaaggatct caagaagatc
ctttgatctt ttctacgggg tctgacgctc agtggaacga 1620 aaactcacgt
taagggattt tggtcatgag attatcaaaa aggatcttca cctagatcct 1680
tttaaattaa aaatgaagtt ttaaatcaat ctaaagtata tatgagtaaa cttggtctga
1740 cagttaccaa tgcttaatca gtgaggcacc tatctcagcg atctgtctat
ttcgttcatc 1800 catagttgcc tgactccccg tcgtgtagat aactacgata
cgggagggct taccatctgg 1860 ccccagtgct gcaatgatac cgcgagaccc
acgctcaccg gctccagatt tatcagcaat 1920 aaaccagcca gccggaaggg
ccgagcgcag aagtggtcct gcaactttat ccgcctccat 1980 ccagtctatt
aattgttgcc gggaagctag agtaagtagt tcgccagtta atagtttgcg 2040
caacgttgtt gccattgcta caggcatcgt ggtgtcacgc tcgtcgtttg gtatggcttc
2100 attcagctcc ggttcccaac gatcaaggcg agttacatga tcccccatgt
tgtgcaaaaa 2160 agcggttagc tccttcggtc ctccgatcgt tgtcagaagt
aagttggccg cagtgttatc 2220 actcatggtt atggcagcac tgcataattc
tcttactgtc atgccatccg taagatgctt 2280 ttctgtgact ggtgagtact
caaccaagtc attctgagaa tagtgtatgc ggcgaccgag 2340 ttgctcttgc
ccggcgtcaa tacgggataa taccgcgcca catagcagaa ctttaaaagt 2400
gctcatcatt ggaaaacgtt cttcggggcg aaaactctca aggatcttac cgctgttgag
2460 atccagttcg atgtaaccca ctcgtgcacc caactgatct tcagcatctt
ttactttcac 2520 cagcgtttct gggtgagcaa aaacaggaag gcaaaatgcc
gcaaaaaagg gaataagggc 2580 gacacggaaa tgttgaatac tcatactctt
cctttttcaa tattattgaa gcatttatca 2640 gggttattgt ctcatgagcg
gatacatatt tgaatgtatt tagaaaaata aacaaatagg 2700 ggttccgcgc
acatttcccc gaaaagtgcc acctgacgtc taagaaacca ttattatcat 2760
gacattaacc tataaaaata ggcgtatcac gaggccctga tggctctttg cggcacccat
2820 cgttcgtaat gttccgtggc accgaggaca accctcaaga gaaaatgtaa
tcacactggc 2880 tcaccttcgg gtgggccttt ctgcgtttat aaggagacac
tttatgttta agaaggttgg 2940 taaattcctt gcggctttgg cagccaagct
agatccagct ttttgcaaaa gcctaggcct 3000 ccaaaaaagc ctcctcacta
cttctggaat agctcagagg ccgaggcggc ctcggcctct 3060 gcataaataa
aaaaaattag tcagccatgg ggcggagaat gggcggaact gggcggagtt 3120
aggggcggga tgggcggagt taggggcggg actatggttg ctgactaatt gagatgcatg
3180 ctttgcatac ttctgcctgc tggggagcct ggggactttc cacacctggt
tgctgactaa 3240 ttgagatgca tgctttgcat acttctgcct gctggggagc
ctggggactt tccacaccct 3300 aactgacaca cattccacag ggaagctagc
ttggaattaa ttccccgccc ccttccaata 3360 caaaaactaa ttagactttg
agtgatcttg agcctttcct agtttttgta ttggaagggc 3420 tcgtcgccag
tctcattgag aaggcatgtg cggacgatgg cttctgtcac tgcaaagggg 3480
tcacaattgg cagaggggcg gcggtcttca aagtaacctt tcttctcctg ccgagccgag
3540 aatgggagta gagccgactg cttgattccc acaccaatct cctcgccgct
ctcacttcgc 3600 ctcgttctcg tggctcgtgg ccctgtccac cccgtccatc
atcccgccgg ccaccgctca 3660 gagcaccttc caccatggcc acctcagcaa
gttcccactt gaacaaaaac atcaagcaaa 3720 tgtacttgtg cctgccccag
ggtgagaaag tccaagccat gtatatctgg gttgatggta 3780 ctggagaagg
actgcgctgc aaaacccgca ccctggactg tgagcccaag tgtgtagaag 3840
agttacctga gtggaatttt gatggctcta gtacctttca gtctgagggc tccaacagtg
3900 acatgtatct cagccctgtt gccatgtttc gggacccctt ccgcagagat
cccaacaagc 3960 tggtgttctg tgaagttttc aagtacaacc ggaagcctgc
agagaccaat ttaaggcact 4020 cgtgtaaacg gataatggac atggtgagca
accagcaccc ctggtttgga atggaacagg 4080 agtatactct gatgggaaca
gatgggcacc cttttggttg gccttccaat ggctttcctg 4140 ggccccaagg
tccgtattac tgtggtgtgg gcgcagacaa agcctatggc agggatatcg 4200
tggaggctca ctaccgcgcc tgcttgtatg ctggggtcaa gattacagga acaaatgctg
4260 aggtcatgcc tgcccagtgg gaactccaaa taggaccctg tgaaggaatc
cgcatgggag 4320 atcatctctg ggtggcccgt ttcatcttgc atcgagtatg
tgaagacttt ggggtaatag 4380 caacctttga ccccaagccc attcctggga
actggaatgg tgcaggctgc cataccaact 4440 ttagcaccaa ggccatgcgg
gaggagaatg gtctgaagta agtagctccc tctggaccat 4500 ctttattctc
atggggtgga aggcctttgt gttagggttg ggaaaagttg gacttctcac 4560
aaactacatg ccatgctctt cgtgtttgtc ataagcctat cgttttgtac ccgttggaga
4620 agtgacagta ctctaggaat agaattacag ctgtgatatg ggaaagttgt
cacgtaggtt 4680 caagcattta aaggtcttta gtaagaacta aatacacata
caagcaagtg ggtgacttaa 4740 ttcttactga tgggaagagg ccagtgatgg
gggtcttccc atccaaaaga taattggtat 4800 tacatgttga ggactggtct
gaagcacttg agacataggt cacaaggcag acacagcctg 4860 catcaagtat
ttattggttt cttatggaac tcatgcctgc tcctgccctt gaaggacagg 4920
tttctagtga caaggtcaga ccctcacctt tactgcttcc accaggcaca tcgaggaggc
4980 catcgagaaa ctaagcaagc ggcaccggta ccacattcga gcctacgatc
ccaagggggg 5040 gctggacaat gcccgtggtc tgactgggtt ccacgaaacg
tccaacatca acgacttttc 5100 tgctggtgtc gccaatcgca gtgccagcat
ccgcattccc cggactgtcg gccaggagaa 5160 gaaaggttac tttgaagacc
gccgcccctc tgccaattgt gacccctttg cagtgacaga 5220 agccatcgtc
cgcacatgcc ttctcaatga gactggcgac gagcccttcc aatacaaaaa 5280
ctaattagac tttgagtgat cttgagcctt tcctagttca tgccaccccg ccccagctgt
5340 ctcattgtaa ctcaaaggat ggaatatcaa cggtcttttt attcctcgtg
cccagttaat 5400 ccttgctttt attggtcaga atagaggagt caagttctta
atgcctatac accaacctca 5460 tttcttttct atttagcttt ctacgtgggg
gtgggagggg tagggagggg taggcgaagg 5520 gaacgtaacc acatgcttca
tctcatcagg aatgccatgt ccagtaggca gagctgccac 5580 agagtgggtg
tatttgtgga ggaggacttt ttcttcagga cagttaaaag agcaggtcca 5640
ctgcttggat tgacaattcc cctataggta gagagcttgc tagttcttca ggtaaaccaa
5700 ctttctattc caaatggaag ttaggtgagg agtagtggag gagttaatgc
cctccatgaa 5760 gacagctcag tgtatcacct gagacagatg ggtagcccta
ctgtaaaaga aggaaaagtt 5820 atttctgggt cctccattta taacacaaag
cagtagtatt tttatattta aatgtaaaaa 5880 caaaagttat atatatgata
tgtggatata tgtgtatttc taattcagaa accatcctag 5940 ttactgggtt
tgccaagttt gaagagcttg gttaacaaga aaggatctct tgagtagagg 6000
tgggggtgca gtaccaggaa aggtggttat ctggggctca gcgctttatt actatgtggg
6060 gtttcccctg cccactctgc aggagcagat gctggacagg tagcagggtg
ggacaccagt 6120 gcttgccacc acctgtccct gtgcttaggc taagatgcat
atgtatccac acagagttag 6180 caggatggag ttggctggtc aacttgaaca
ttgttactga taggggtggg tggggtttat 6240 tttttggtgg gactagcatg
tcactaaagc aggccttttg atatattaaa ttttttaaag 6300 caaaacaagt
tcagctttta atcaactttg tagggtttct aactttacag aattgcctgt 6360
ttgtttcagt gtctccatcc actttgctct tggaggaacg gaggacaggc agacctggag
6420 ttaaaacatt tgtcattttg tgtcatagtg tctactttct cccagcagaa
tattcctttc 6480 cttcttagga gtcctatgga gttttgtttt tgtttttttt
ctattacgat aaacataccc 6540 cacctccatt ctggcttgcc ctgctgttct
ctggttgttt gtgtgctgtc cgcagcaggc 6600 tgcctgtggt tttctcttgc
catgacgact tctaattgcc atgtacagta tgttcagtta 6660 gataactcct
cattgtaaac agactgtaac tgccagagca gcgcttataa atcaacctaa 6720
catttataag atttcctctt gacttgtttc tttgtggttg ggggaggaag aaaaaaaaaa
6780 gcgtgcagta tttttttgtt ccttcatttc ctatcaaaag aaaggggagt
ggttctgttt 6840 tgtttactcg caaaataagc tagcttatct attggctttt
cttttttttt ttttttttaa 6900 acgggctttt tcttgtacct ataatttggg
gtaaggtgtg agagttttta tagttttttg 6960 agacagggtc ttggtgtata
cccttggctg gcctggagct aactatgtag actgggctag 7020 cctttaactt
gcagttctgc tttcaattag ggtttataca tttagtcttg gcaattccta 7080
gttccacgtt taatctcttt acatttcaaa gcagtgttat ctgaagagtt caggcgcaga
7140 gtcaattcaa tagagttaca caaaaaccta aaaaacaagt tttaaatacc
aagttatgtt 7200 ggcctggcca cttttcacag ctgtccacaa ctcaatgtga
caaggctaca aattggatat 7260 actagaattt cctggtgatt tggaacccct
gcttcatttc ccggaaccag ggcttttggt 7320 gacagtccta gcttatcaga
ttatttaaaa cagttactct tcctgccctt cttcctgaga 7380 cctttgtcca
gctgccatga gccatctaca cagtacttgc ttccctgttg aagtcactga 7440
aggcacatca gcccaagaca taaaggcttg tcccggattc actagcctgg tgaacttgtg
7500 gttctctgat gttttgtcct gttttgttgt gatttagtct caaatttccc
agcctggttt 7560 gaaaatctgg gctcccagcc ttcaataagg aggactacag
atatgtacga ctgagccttg 7620 attccagcct catgtttata cgtctgtgct
cagctccctg aaggttccag tttgaaactc 7680 aataatccag gggtcagaaa
gtcttgatct tatccccaca gtatggcacc aagcctggct 7740 gagccttctg
acttagtctg ccctgttgct atttaagcac ttttcttcac taggctaaaa 7800
ataaaaggag cttcctcctt tgccatggcg ctgtgcatga taggaaaagg tagctatcta
7860 ctagcatatt aactccactg tttttgcttt gtgtgtttgg tttttgagga
agggtctcaa 7920 ctgtgtatcc ctggctggcc tggccggatc tagcttcgtg
tcaaggacgg tgaggcgcgc 7980 caatattggc tattggccat tgcatacgtt
gtatccatat cataatatgt acatttatat 8040 tggctcatgt ccaacattac
cgccatgttg acattgatta ttgactagtt attaatagta 8100 atcaattacg
gggtcattag ttcatagccc atatatggag ttccgcgtta cataacttac 8160
ggtaaatggc ccgcctggct gaccgcccaa cgacccccgc ccattgacgt caataatgac
8220 gtatgttccc atagtaacgc caatagggac tttccattga cgtcaatggg
tggagtattt 8280 acggtaaact gcccacttgg cagtacatca agtgtatcat
atgccaagta cgccccctat 8340 tgacgtcaat gacggtaaat ggcccgcctg
gcattatgcc cagtacatga ccttatggga 8400 ctttcctact tggcagtaca
tctacgtatt agtcatcgct attaccatgg tgatgcggtt 8460 ttggcagtac
atcaatgggc gtggatagcg gtttgactca cggggatttc caagtctcca 8520
ccccattgac gtcaatggga gtttgttttg gcaccaaaat caacgggact ttccaaaatg
8580 tcgtaacaac tccgccccat tgacgcaaat gggcggtagg cgtgtacggt
gggaggtcta 8640 tataagcaga gctcgtttag tgaaccgtca gatcgcctgg
agacgccatc cacgctgttt 8700 tgacctccat agaagacacc gggaccgatc
cagcctccgc ggccgggaac ggtgcattgg 8760 aacgcggatt ccccgtgcca
agagtgacgt aagtaccgcc tatagagtct ataggcccac 8820 ccccttggct
tcttatgcat gctatactgt ttttggcttg gggtctatac acccccgctt 8880
cctcatgtta taggtgatgg tatagcttag cctataggtg tgggttattg accattattg
8940 accactcccc tattggtgac gatactttcc attactaatc cataacatgg
ctctttgcca 9000 caactctctt tattggctat atgccaatac actgtccttc
agagactgac acggactctg 9060 tatttttaca ggatggggtc tcatttatta
tttacaaatt cacatataca acaccaccgt 9120 ccccagtgcc cgcagttttt
attaaacata acgtgggatc tccacgcgaa tctcgggtac 9180 gtgttccgga
catgggctct tctccggtag cggcggagct tctacatccg agccctgctc 9240
ccatgcctcc agcgactcat ggtcgctcgg cagctccttg ctcctaacag tggaggccag
9300 acttaggcac agcacgatgc ccaccaccac cagtgtgccg cacaaggccg
tggcggtagg 9360 gtatgtgtct gaaaatgagc tcggggagcg ggcttgcacc
gctgacgcat ttggaagact 9420 taaggcagcg gcagaagaag atgcaggcag
ctgagttgtt gtgttctgat aagagtcaga 9480 ggtaactccc gttgcggtgc
tgttaacggt ggagggcagt gtagtctgag cagtactcgt 9540 tgctgccgcg
cgcgccacca gacataatag ctgacagact aacagactgt tcctttccat 9600
gggtcttttc tgcagtcacc gtccttgaca cgaagcttgc cgccaccatg gtgagcaagc
9660 agatcctgaa gaacaccggc ctgcaggaga tcatgagctt caaggtgaac
ctggagggcg 9720 tggtgaacaa ccacgtgttc accatggagg gctgcggcaa
gggcaacatc ctgttcggca 9780 accagctggt gcagatccgc gtgaccaagg
gcgcccccct gcccttcgcc ttcgacatcc 9840 tgagccccgc cttccagtac
ggcaaccgca ccttcaccaa gtaccccgag gacatcagcg 9900 acttcttcat
ccagagcttc cccgccggct tcgtgtacga gcgcaccctg cgctacgagg 9960
acggcggcct ggtggagatc cgcagcgaca tcaacctgat cgaggagatg ttcgtgtacc
10020 gcgtggagta caagggccgc aacttcccca acgacggccc cgtgatgaag
aagaccatca 10080 ccggcctgca gcccagcttc gaggtggtgt acatgaacga
cggcgtgctg gtgggccagg 10140 tgatcctggt gtaccgcctg aacagcggca
agttctacag ctgccacatg cgcaccctga 10200 tgaagagcaa gggcgtggtg
aaggacttcc ccgagtacca cttcatccag caccgcctgg 10260 agaagaccta
cgtggaggac ggcggcttcg tggagcagca cgagaccgcc atcgcccagc 10320
tgaccagcct gggcaagccc ctgggcagcc tgcacgagtg ggtgtaata 10369 4 13535
DNA Hamster sp. misc_feature Seq. ID. No. 1 circular plasmid GS +
IgG 2A hot spot targetting vector pEE 15.1 hCMVp-GFP /clone 11 4
gaattcattg atcataatca gccataccac atttgtagag gttttacttg ctttaaaaaa
60 cctcccacac ctccccctga acctgaaaca taaaatgaat gcaattgttg
ttgttaactt 120 gtttattgca gcttataatg gttacaaata aagcaatagc
atcacaaatt tcacaaataa 180 agcatttttt tcactgcatt ctagttgtgg
tttgtccaaa ctcatcaatg tatcttatca 240 tgtctggcgg ccgcgacctg
caggcgcaga actggtaggt atggaagatc cctcgagatc 300 cattgtgctg
gcggtaggcg agcagcgcct gcctgaagct gcgggcattc ccagtcagaa 360
atgagcgcca gtcgtcgtcg gctctcggca ccgaagtgct atgattctcc gccagcatgg
420 cttcggccag tgcgtcgagc agcgcccgct tgttcctgaa gtgccagtaa
agcgccggct 480 gctgaacccc caaccgttcc gccagtttgc gtgtcgtcag
accgtctacg ccgacctcgt 540 tcaacaggtc tagggcggca cggatcactg
tattcggctg caactttgtc atgcttgaca 600 ctttatcact gataaacata
atatgtccac caacttatca gtgataaaga atccgcgcca 660 gcacaatgga
tctcgaggtc gagggatctc tagaggatcc atattcgcga atatgccggc 720
atcaccggcg ccacaggtgc ggttgctggc gcctatatcg ccgacatcac cgatggggaa
780 gatcgggctc gccacttcgg gctcatgagc gcttgtttcg gcgtgggtat
ggtggcaggc 840 ccgtggccgg gggactgttg ggcgccatct ccttgcatgc
accattcctt gcggcggcgg 900 tgctcaacgg cctcaaccta ctactgggct
gcttcctaat gcaggagtcg cataagggag 960 agcgtcgagt cctccgtgtt
cgaagcgatc cctgtccagt ggtgtgcaca ccttcccagc 1020 tgtcctgcag
tctgacctct acaccctcag cagctcagtg actgtaacct cgagcacctg 1080
gcccagccag tccatcacct gcaatgtggc ccacccggca agcagcacca aggtggacaa
1140 gaaaattggt gaggaaaaca aggggagtag aggttcacaa gtgattagtc
taaggcctta 1200 gcctagctag accagccagg atcagcagcc atcaccaaaa
atgggaactt ggcccagaag 1260 agaaggagat actgactgtg actccctctt
ggaaacttct aactatgacc acctaccttc 1320 aaggtcatga tcctctagga
tagatgtcct tggtcatttc caggatcatc ctgacctaag 1380 gccataccca
gggacaaagt ccctggtttg gtgccttttc tccttcaaac ttgagtaacc 1440
cccagccttc tctctgcaga gcccagaggg cccacaatca agccctgtcc tccatgcaaa
1500 tgcccaggta agtcactaga ccagagctcc acccgggaga atggtaagtg
ctgtaaacat 1560 ccctgcacta gaggataagc catgtacaga tccatttcca
tctctcctca tcagcaccta 1620 acctcttggg tggaccatcc gtcttcatct
tccctccaaa gatcaaggat gtactcatga 1680 tctccctgag ccccatagtc
acatgtgtgg tggtggatgt gagcgaggat gacccagatg 1740 tccagatcag
ctggtttgtg aacaacgtgg aagtacacac agctcagaca caaacccata 1800
gagaggatta caacagtact ctccgggtgg tcagtgccct ccccatccag caccaggact
1860 ggatgagtgg caaggagttc aaatgcaagg tcaacaacaa agacctccca
gcgcccatcg 1920 agagaaccat ctcaaaaccc aaaggtgaga gctgcagcct
gactgcatgg gggctgggat 1980 gggcataagg ataaaggtct gtgtggacag
ccttctgctt cagccatgac ctttgtgtat 2040 gtttctaccc tcacagggtc
agtaagagct ccacaggtat atgtcttgcc tccaccagaa 2100 gaagagatga
ctaagaaaca ggtcactctg acctgcatgg tcacagactt catgcctgaa 2160
gacatttacg tggagtggac caacaacggg aaaacagagc taaactacaa gaacactgaa
2220 ccagtcctgg actctgatgg ttcttacttc atgtacagca agctgagagt
ggaaaagaag 2280 aactgggtgg aaagaaatag ctactcctgt tcagtggtcc
acgagggtct gcacaatcac 2340 cacacgacta agagcttctc ccggactccg
ggtaaatgag ctcagcaccc acaaaactct 2400 caggtccaaa gagacaccca
cactcatctc catgcttccc ttgtataaat aaagcaccca 2460 ccaatgcctg
ggaccatgta aaactgtcct ggttctttcc aaggtataga gcatagctca 2520
caggctgata tttctggcca gggttggagg acagccttgt ctataggaag agaatgaggt
2580 ttttgcactg caggactcag agctcattag ttatcctgcc ttggagtgtt
ggggcttggc 2640 tttaggcagt gccttttcct tgccttccta cgaaccagca
gctgccatac atagagataa 2700 tcctaggaag cctcaaatgg agaaggacac
aaacccacct ccctcaggct gttcctctat 2760 cccggcccca cttctttacc
taggggtttc tctgagtcta ttgtggagtt acacatggcc 2820 aggggcattc
cagagaccct tgtcatccat acactcaact caggcagctt tgcacaaaca 2880
aagtctgcac acccatacag atggctcact cttgcctgtg ccatgtaggg ctgaggcaca
2940 tggctcttgc tgccccaagg gagggactat tagatagcca cactcatgct
gaatcctggc 3000 ccattcaaat tagcctgctg aacaccatcc agtccatata
gcacatgtat ccacatgcac 3060 gtgtgcacaa aacgcattta atacactggg
acaacaattc tgtgccctgc acagcaccta 3120 tatccagcaa tgtatcacca
tacacacgac caaaaaaatt caatgcccac gtttctgcca 3180 tcacaaacag
acacatcttt cctctctgtg gccactgcat tatatgctca acacaagacc 3240
tctgaagcca gatccatctc tggcacctcg gggtcatgct tcaaccccac atgaattatg
3300 caaaccatag ccataatggt ctgaatcact tcacactggg atgttcccaa
gttcaggcaa 3360 gacgagccac aggctctgct gatgactgaa ggacagcaaa
gggtcagtcc agctgtatag 3420 ccactgttga cctgggtcac aggccctgct
gaccctccac cttctcctgt actgaaggaa 3480 tgaaagatga gacaagcata
gagggcactt gaataatcca ggtcactctg aggtccaccc 3540 aaggcattat
tggactcagg tgggaagctg agactggtgt cccagaggga aaggaaggaa 3600
agcaggcccc ggggagggtc tgctgtccca gtcaggctgg agatctctcc tctgaatcca
3660 tgcagacatg tctgcctcac agggaatctc tcccagcacc aaccatgttg
ggacaaacac 3720 tgactgtcct ctctgttcag ggctagacct ggatgatgtc
tgtgctgagg cccaggacgg 3780 ggagctggac ggcctctgga cgaccatcac
catcttcatc agcctcttcc tgctcagcgt 3840 gtgctacagc gcctctgtca
cactcttcaa ggttggcact gtctcccacc ctctgctgtg 3900 atggctacac
tgaccacaaa atgtcctctc actcctcccc agatgtagta ggacgttact 3960
ttgctgcccc tactctgtcc cacacaccat ttcctccatt ccctgagcca tcccacattg
4020 ttctatgtga ctccacattg tgtcccatac agtctgccct tctgtctctc
tggctgtcct 4080 gcgtgatcct gatactgtct tatgagacca aacctccttg
cattccacac tagccttcat 4140 gaggttcaat gctgtcttac acacaatccc
ctcagcctca ccatggctca aggtactctg 4200 tgagctatcc tcataccatc
tccacctcaa ctcccacaat atctccactc tgacccctcc 4260 catacccagt
ctcctacctg tatgaaggga
attgaaggag agacaggtcg acctctgtct 4320 ttcccacaga ttggagggtc
tgagcatggg cgtggtctct gactttctct cacttcccca 4380 caggtaaagt
ggatcttctc ctctgtggtg gagctgaagc agacgatctc ccctgactac 4440
agaaacatga ttgggcaggg agcctaggcc acttcctctg ggatcagaag agcttcctag
4500 gccctgcaga agcccatcca tcctactgtg cagcctaaca gggaggccac
actctagccc 4560 tatgactctc tgatcagaac tcccatggtc tcctctttgg
aggaccacgt gcagtgcagg 4620 ctttgcccag acctaaacac ttccacagca
gtcgccagat atctaactac tccggaccag 4680 aagaaccatc tccttccaaa
ccagcactag ggatctgaga tctcagaatg tttgcctaag 4740 aagagctgga
aatccaggct tcctgtgttc tgctacaagg acatcagcct ggatttgacc 4800
tggaccacac attttcatct aaatgagttt tccacaaagg acacgtttca gatccttgaa
4860 tgagacctct acatggaaga ccagagtcac tatacccaaa ggtcactctg
tatccttgca 4920 ccagctatac tggacagctt ccttcctggt acttcagtga
ccctggctga ggaaaggatc 4980 tgtgacctca actgtttgga gagcctctgg
aagatgtagt cttctcttcc tgctaccacc 5040 aacatgctgg atctcagatg
cagaatccaa tccacagaca ccactgacca cacaacctga 5100 agacaaggcc
attgccacct ccacagagat gccatccaca ctctgtggag aaataaggag 5160
tgctttgtgc agcctctgca aagctctggc agggattaga gtatacacac tgagtactga
5220 ctaggtgacc aggcagaaaa acctccagga gaaggaacaa tgggggagag
atgtgaacag 5280 atagttagaa aaagcatggt gtcacaggtc tgctctgtgg
actgatttcc agattggacc 5340 acctacagca gaaaccatcg gttgcagtgg
caatctagga ggaccaacct ggaataggag 5400 ggctgctgtg gtcaatggag
agtagacctg tatctatttc tccactgcct cttatgacca 5460 ataagaagcc
agagtctcca gacagaaaga aagaaagaaa gaaagaaaga aagaaagaaa 5520
gaaagagaga gagagagaga gagagagaga gaggaaggaa ggaaggaagg aaggaaggaa
5580 ggaaggaagg aggaggagga ggaggaggag gaggaggaga gagagagaga
gagagagaga 5640 gagagagaga gagcaccagc ttttctgtga ctggaaggaa
atgcttagag agcttggatc 5700 tttaaagctt cttttttcta gagaccatga
atgtctttgt tctctctctc tctctctctc 5760 tctctctctc tctctctctc
tctctctgtg tgtgtgtgtg tgtgtgtgtg tgtgtgtgcg 5820 tgcatgcacg
ctattgtttt ggcatttgaa acaataaaac attcttttaa tattctgtat 5880
ctcatggttc cccttctgtg tggatcagcc ctaacaccca ggaacagggg acaataaaca
5940 gaccacagcc atgtacagcc ttctacctcc cttctggttc tgacctccca
gaggtccctc 6000 agtgggcccc tcacagctgg gtttcttccc tggcagtgcc
accaagagct caggcacctc 6060 tgagctggag gctgtcctga tgccataggc
aggctatgga gcagagatga tgaccacggt 6120 ggactccagg tgagccaggc
aaagcctccc atgccagaag agaagcgtgt ggtactcact 6180 ggcctcgggc
tgctacggat tcagcaaaga gcatggatcg cttcgaagcc tccaagctcg 6240
acctcgggcc gcgttgctgg cgtttttcca taggctccgc ccccctgacg agcatcacaa
6300 aaatcgacgc tcaagtcaga ggtggcgaaa cccgacagga ctataaagat
accaggcgtt 6360 tccccctgga agctccctcg tgcgctctcc tgttccgacc
ctgccgctta ccggatacct 6420 gtccgccttt ctcccttcgg gaagcgtggc
gctttctcaa tgctcacgct gtaggtatct 6480 cagttcggtg taggtcgttc
gctccaagct gggctgtgtg cacgaacccc ccgttcagcc 6540 cgaccgctgc
gccttatccg gtaactatcg tcttgagtcc aacccggtaa gacacgactt 6600
atcgccactg gcagcagcca ctggtaacag gattagcaga gcgaggtatg taggcggtgc
6660 tacagagttc ttgaagtggt ggcctaacta cggctacact agaaggacag
tatttggtat 6720 ctgcgctctg ctgaagccag ttaccttcgg aaaaagagtt
ggtagctctt gatccggcaa 6780 acaaaccacc gctggtagcg gtggtttttt
tgtttgcaag cagcagatta cgcgcagaaa 6840 aaaaggatct caagaagatc
ctttgatctt ttctacgggg tctgacgctc agtggaacga 6900 aaactcacgt
taagggattt tggtcatgag attatcaaaa aggatcttca cctagatcct 6960
tttaaattaa aaatgaagtt ttaaatcaat ctaaagtata tatgagtaaa cttggtctga
7020 cagttaccaa tgcttaatca gtgaggcacc tatctcagcg atctgtctat
ttcgttcatc 7080 catagttgcc tgactccccg tcgtgtagat aactacgata
cgggagggct taccatctgg 7140 ccccagtgct gcaatgatac cgcgagaccc
acgctcaccg gctccagatt tatcagcaat 7200 aaaccagcca gccggaaggg
ccgagcgcag aagtggtcct gcaactttat ccgcctccat 7260 ccagtctatt
aattgttgcc gggaagctag agtaagtagt tcgccagtta atagtttgcg 7320
caacgttgtt gccattgcta caggcatcgt ggtgtcacgc tcgtcgtttg gtatggcttc
7380 attcagctcc ggttcccaac gatcaaggcg agttacatga tcccccatgt
tgtgcaaaaa 7440 agcggttagc tccttcggtc ctccgatcgt tgtcagaagt
aagttggccg cagtgttatc 7500 actcatggtt atggcagcac tgcataattc
tcttactgtc atgccatccg taagatgctt 7560 ttctgtgact ggtgagtact
caaccaagtc attctgagaa tagtgtatgc ggcgaccgag 7620 ttgctcttgc
ccggcgtcaa cacgggataa taccgcgcca catagcagaa ctttaaaagt 7680
gctcatcatt ggaaaacgtt cttcggggcg aaaactctca aggatcttac cgctgttgag
7740 atccagttcg atgtaaccca ctcgtgcacc caactgatct tcagcatctt
ttactttcac 7800 cagcgtttct gggtgagcaa aaacaggaag gcaaaatgcc
gcaaaaaagg gaataagggc 7860 gacacggaaa tgttgaatac tcatactctt
cctttttcaa tattattgaa gcatttatca 7920 gggttattgt ctcatgagcg
gatacatatt tgaatgtatt tagaaaaata aacaaatagg 7980 ggttccgcgc
acatttcccc gaaaagtgcc acctgacgtc taagaaacca ttattatcat 8040
gacattaacc tataaaaata ggcgtatcac gaggccctga tggctctttg cggcacccat
8100 cgttcgtaat gttccgtggc accgaggaca accctcaaga gaaaatgtaa
tcacactggc 8160 tcaccttcgg gtgggccttt ctgcgtttat aaggagacac
tttatgttta agaaggttgg 8220 taaattcctt gcggctttgg cagccaagct
agagatccgg ctgtggaatg tgtgtcagtt 8280 agggtgtgga aagtccccag
gctccccagc aggcagaagt atgcaaagca tgcatctcaa 8340 ttagtcagca
accaggtgtg gaaagtcccc aggctcccca gcaggcagaa gtatgcaaag 8400
catgcatctc aattagtcag caaccatagt cccgccccta actccgccca tcccgcccct
8460 aactccgccc agttccgccc attctccgcc ccatggctga ctaatttttt
ttatttatgc 8520 agaggccgag gccgcctcgg cctctgagct attccagaag
tagtgaggag gcttttttgg 8580 aggcctaggc ttttgcaaaa agctagcttg
gggccaccgc tcagagcacc ttccaccatg 8640 gccacctcag caagttccca
cttgaacaaa aacatcaagc aaatgtactt gtgcctgccc 8700 cagggtgaga
aagtccaagc catgtatatc tgggttgatg gtactggaga aggactgcgc 8760
tgcaaaaccc gcaccctgga ctgtgagccc aagtgtgtag aagagttacc tgagtggaat
8820 tttgatggct ctagtacctt tcagtctgag ggctccaaca gtgacatgta
tctcagccct 8880 gttgccatgt ttcgggaccc cttccgcaga gatcccaaca
agctggtgtt ctgtgaagtt 8940 ttcaagtaca accggaagcc tgcagagacc
aatttaaggc actcgtgtaa acggataatg 9000 gacatggtga gcaaccagca
cccctggttt ggaatggaac aggagtatac tctgatggga 9060 acagatgggc
acccttttgg ttggccttcc aatggctttc ctgggcccca aggtccgtat 9120
tactgtggtg tgggcgcaga caaagcctat ggcagggata tcgtggaggc tcactaccgc
9180 gcctgcttgt atgctggggt caagattaca ggaacaaatg ctgaggtcat
gcctgcccag 9240 tgggaactcc aaataggacc ctgtgaagga atccgcatgg
gagatcatct ctgggtggcc 9300 cgtttcatct tgcatcgagt atgtgaagac
tttggggtaa tagcaacctt tgaccccaag 9360 cccattcctg ggaactggaa
tggtgcaggc tgccatacca actttagcac caaggccatg 9420 cgggaggaga
atggtctgaa gcacatcgag gaggccatcg agaaactaag caagcggcac 9480
cggtaccaca ttcgagccta cgatcccaag gggggcctgg acaatgcccg tggtctgact
9540 gggttccacg aaacgtccaa catcaacgac ttttctgctg gtgtcgccaa
tcgcagtgcc 9600 agcatccgca ttccccggac tgtcggccag gagaagaaag
gttactttga agaccgcggc 9660 ccctctgcca attgtgaccc ctttgcagtg
acagaagcca tcgtccgcac atgccttctc 9720 aatgagactg gcgacgagcc
cttccaatac aaaaactaat tagactttga gtgatcttga 9780 gcctttccta
gttcatccca ccccgcccca gagagatctt tgtgaaggaa ccttacttct 9840
gtggtgtgac ataattggac aaactaccta cagagattta aagctctaag gtaaatataa
9900 aatttttaag tgtataatgt gttaaactac tgattctaat tgtttgtgta
ttttagattc 9960 caacctatgg aactgatgaa tgggagcagt ggtggaatgc
ctttaatgag gaaaacctgt 10020 tttgctcaga agaaatgcca tctagtgatg
atgaggctac tgctgactct caacattcta 10080 ctcctccaaa aaagaagaga
aaggtagaag accccaagga ctttccttca gaattgctaa 10140 gttttttgag
tcatgctgtg tttagtaata gaactcttgc ttgctttgct atttacacca 10200
caaaggaaaa agctgcactg ctatacaaga aaattatgga aaaatattct gtaaccttta
10260 taagtaggca taacagttat aatcataaca tactgttttt tcttactcca
cacaggcata 10320 gagtgtctgc tattaataac tatgctcaaa aattgtgtac
ctttagcttt ttaatttgta 10380 aaggggttaa taaggaatat ttgatgtata
gtgccttgac tagagatcat aatcagccat 10440 accacatttg tagaggtttt
acttgcttta aaaaacctcc cacacctccc cctgaacctg 10500 aaacataaaa
tgaatgcaat tgttgttgtt aacttgttta ttgcagctta taatggttac 10560
aaataaagca atagcatcac aaatttcaca aataaagcat ttttttcact gcattctagt
10620 tgtggtttgt ccaaactcat caatgtatct tatcatgtct ggatctctag
cttcgtgtca 10680 aggacggtga ctgcagtgaa taataaaatg tgtgtttgtc
cgaaatacgc gttttgagat 10740 ttctgtcgcc gactaaattc atgtcgcgcg
atagtggtgt ttatcgccga tagagatggc 10800 gatattggaa aaatcgatat
ttgaaaatat ggcatattga aaatgtcgcc gatgtgagtt 10860 tctgtgtaac
tgatatcgcc atttttccaa aagtgatttt tgggcatacg cgatatctgg 10920
cgatagcgct tatatcgttt acgggggatg gcgatagacg actttggtga cttgggcgat
10980 tctgtgtgtc gcaaatatcg cagtttcgat ataggtgaca gacgatatga
ggctatatcg 11040 ccgatagagg cgacatcaag ctggcacatg gccaatgcat
atcgatctat acattgaatc 11100 aatattggcc attagccata ttattcattg
gttatatagc ataaatcaat attggctatt 11160 ggccattgca tacgttgtat
ccatatcata atatgtacat ttatattggc tcatgtccaa 11220 cattaccgcc
atgttgacat tgattattga ctagttatta atagtaatca attacggggt 11280
cattagttca tagcccatat atggagttcc gcgttacata acttacggta aatggcccgc
11340 ctggctgacc gcccaacgac ccccgcccat tgacgtcaat aatgacgtat
gttcccatag 11400 taacgccaat agggactttc cattgacgtc aatgggtgga
gtatttacgg taaactgccc 11460 acttggcagt acatcaagtg tatcatatgc
caagtacgcc ccctattgac gtcaatgacg 11520 gtaaatggcc cgcctggcat
tatgcccagt acatgacctt atgggacttt cctacttggc 11580 agtacatcta
cgtattagtc atcgctatta ccatggtgat gcggttttgg cagtacatca 11640
atgggcgtgg atagcggttt gactcacggg gatttccaag tctccacccc attgacgtca
11700 atgggagttt gttttggcac caaaatcaac gggactttcc aaaatgtcgt
aacaactccg 11760 ccccattgac gcaaatgggc ggtaggcgtg tacggtggga
ggtctatata agcagagctc 11820 gtttagtgaa ccgtcagatc gcctggagac
gccatccacg ctgttttgac ctccatagaa 11880 gacaccggga ccgatccagc
ctccgcggcc gggaacggtg cattggaacg cggattcccc 11940 gtgccaagag
tgacgtaagt accgcctata gagtctatag gcccaccccc ttggcttctt 12000
atgcatgcta tactgttttt ggcttggggt ctatacaccc ccgcttcctc atgttatagg
12060 tgatggtata gcttagccta taggtgtggg ttattgacca ttattgacca
ctcccctatt 12120 ggtgacgata ctttccatta ctaatccata acatggctct
ttgccacaac tctctttatt 12180 ggctatatgc caatacactg tccttcagag
actgacacgg actctgtatt tttacaggat 12240 ggggtctcat ttattattta
caaattcaca tatacaacac caccgtcccc agtgcccgca 12300 gtttttatta
aacataacgt gggatctcca cgcgaatctc gggtacgtgt tccggacatg 12360
ggctcttctc cggtagcggc ggagcttcta catccgagcc ctgctcccat gcctccagcg
12420 actcatggtc gctcggcagc tccttgctcc taacagtgga ggccagactt
aggcacagca 12480 cgatgcccac caccaccagt gtgccgcaca aggccgtggc
ggtagggtat gtgtctgaaa 12540 atgagctcgg ggagcgggct tgcaccgctg
acgcatttgg aagacttaag gcagcggcag 12600 aagaagatgc aggcagctga
gttgttgtgt tctgataaga gtcagaggta actcccgttg 12660 cggtgctgtt
aacggtggag ggcagtgtag tctgagcagt actcgttgct gccgcgcgcg 12720
ccaccagaca taatagctga cagactaaca gactgttcct ttccatgggt cttttctgca
12780 gtcaccgtcc ttgacacgaa gcttgccgcc accatggtga gcaagcagat
cctgaagaac 12840 accggcctgc aggagatcat gagcttcaag gtgaacctgg
agggcgtggt gaacaaccac 12900 gtgttcacca tggagggctg cggcaagggc
aacatcctgt tcggcaacca gctggtgcag 12960 atccgcgtga ccaagggcgc
ccccctgccc ttcgccttcg acatcctgag ccccgccttc 13020 cagtacggca
accgcacctt caccaagtac cccgaggaca tcagcgactt cttcatccag 13080
agcttccccg ccggcttcgt gtacgagcgc accctgcgct acgaggacgg cggcctggtg
13140 gagatccgca gcgacatcaa cctgatcgag gagatgttcg tgtaccgcgt
ggagtacaag 13200 ggccgcaact tccccaacga cggccccgtg atgaagaaga
ccatcaccgg cctgcagccc 13260 agcttcgagg tggtgtacat gaacgacggc
gtgctggtgg gccaggtgat cctggtgtac 13320 cgcctgaaca gcggcaagtt
ctacagctgc cacatgcgca ccctgatgaa gagcaagggc 13380 gtggtgaagg
acttccccga gtaccacttc atccagcacc gcctggagaa gacctacgtg 13440
gaggacggcg gcttcgtgga gcagcacgag accgccatcg cccagctgac cagcctgggc
13500 aagcccctgg gcagcctgca cgagtgggtg taata 13535
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