WO1999041390A2 - Expressionsvektor zur herstellung von dead-proteinen - Google Patents
Expressionsvektor zur herstellung von dead-proteinen Download PDFInfo
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- WO1999041390A2 WO1999041390A2 PCT/EP1999/000829 EP9900829W WO9941390A2 WO 1999041390 A2 WO1999041390 A2 WO 1999041390A2 EP 9900829 W EP9900829 W EP 9900829W WO 9941390 A2 WO9941390 A2 WO 9941390A2
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
- C12N15/09—Recombinant DNA-technology
- C12N15/63—Introduction of foreign genetic material using vectors; Vectors; Use of hosts therefor; Regulation of expression
- C12N15/79—Vectors or expression systems specially adapted for eukaryotic hosts
- C12N15/85—Vectors or expression systems specially adapted for eukaryotic hosts for animal cells
- C12N15/86—Viral vectors
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N9/00—Enzymes; Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating or purifying enzymes
- C12N9/90—Isomerases (5.)
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K2319/00—Fusion polypeptide
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N2710/00—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA dsDNA viruses
- C12N2710/00011—Details
- C12N2710/14011—Baculoviridae
- C12N2710/14111—Nucleopolyhedrovirus, e.g. autographa californica nucleopolyhedrovirus
- C12N2710/14141—Use of virus, viral particle or viral elements as a vector
- C12N2710/14143—Use of virus, viral particle or viral elements as a vector viral genome or elements thereof as genetic vector
Definitions
- the present invention relates to an insect cell vector for the production of proteins from the DEAD protein family.
- RNA structure plays an essential function in cellular processes, e.g. in pre-mRNA splicing, in RNA transport or in protein translation, since the cellular RNA is present in the cell in different secondary and tertiary structures and, in addition, a large number of RNA-binding proteins ensure further structuring of the RNA.
- modulation processes include Proteins from the family of the so-called DEAD box proteins are involved.
- the members of this protein superfamily which as a characteristic contain a number of homologous protein sequences, so-called “protein boxes”, are named as motifs after the highly conserved tetrapeptide Asp-Glu-Ala-Asp, in the single-letter code D-E-A-D. About this protein superfamily also include several RNA or DNA helicases.
- the characteristic protein sequences of the DEAD proteins are highly conserved in evolution.
- a schematic representation of the proteins from the DEAD superfamily and their subfamilies according to FIG. 1 shows the similarity between the individual family members (see also Schmid, SR & Linder, P. (1992) Molecular Microbiology, 6, 283, No. 3; Fuller- Pace FV (1994) Trends in Cell Biology, 4, 271). It can be seen that the DEAD superfamily is divided into different subfamilies, which are named according to their sequence motif DEAH, DEXH or DEAH * subfamily. All family members have an ATP binding and RNA binding function as well as an ATP hydrolysis and RNA helicase function.
- EP-A-0778347 describes a new ATP and nucleic acid binding protein with putative helicase and ATPase properties, which is assigned to the DEAH subfamily.
- the RNA helicase also described together with the tolerance of certain cells to leflunomide and related compounds and is therefore suitable for the production of cell lines which are helpful in cancer, inflammation and apoptosis research and in the elucidation of mechanisms of action of medicinal substances.
- Another possible application of this helicase is the identification of already known substances with regard to possible pharmaceutical properties such as an anticancerogenic or antiviral effect in a test or assay system. However, sufficient amounts of the protein are necessary for the desired uses of the RNA helicase.
- RS domain a region between 50 and 200 amino acids in size, which has a high accumulation of argenin-serine repeats (one-letter code RS), is suspected to directly or indirectly make protein expression more difficult.
- a direct effect can be caused, for example, by incorrect phosphorylation of the serine residues in this area.
- overexpression of proteins with this domain can trigger toxic effects in the cell, since specific protein-protein interactions are mediated via this protein domain.
- the native interaction via RS domains can be disturbed or inhibited.
- RS proteins The family of RS proteins is a "subfamily" of proteins that is defined by the possession of the RS domain. These proteins are involved in a wide variety of processes of pre-mRNA splicing. RS domains can interact with proteins convey the RNA binding influence, modulate RNA-RNA annealing and act as subcellular localization signals. The relationship between the DEAD box and the RS proteins is that both are involved in the modulation of RNA structure and function and therefore many proteins can be assigned to the protein families.
- the RS domain in human RNA helicase according to SEQ ID No. 7 lies in the range from approx. 131 to approx. 253 and in particular in the range from approx. 175 to approx. 216 based on the amino acid position.
- the present invention therefore relates to an insect cell vector containing a nucleic acid coding for a protein from the DEAD protein superfamily.
- nucleic acid is preferably understood to mean single- or double-stranded DNA or RNA, in particular double-stranded DNA.
- the coding nucleic acid at the 3'-end of the coding region additionally contains a native 3'-non-coding region, which in preferred embodiments is at least approximately 50, preferably approximately 50 to approximately 450, in particular approximately 50 to is approximately 400 nucleotides long.
- “Native” in the sense of the present invention refers to 3′-non-coding nucleic acid regions which come from the same organism, preferably from the same gene as the coding nucleic acid. If, for example, the nucleic acid codes for a human RNA helicase according to EP-A-0778347, the 3 ′ non-coding region according to the preferred embodiment likewise originates from human cells, in particular from the gene coding for the designated RNA helicase. The 3 'non-coding region according to SEQ ID No. 10th
- CPSF Cleavage and Polyadenylation Specificity Factor
- the CPSF protein consists of a complex of subunits with molecular weights of 160, 100, 73 and 30 kD.
- CstF cleavage stimulation factor
- This protein is a heterotrimer consisting of three subunits with 77, 64 and 50 kD.
- CstF cleavage stimulation factor
- the poly (A) polymerase is a polypeptide with a molecular mass of 83 kD.
- the polymerase is both attached the poly (A) tail synthesis, as well as involved in its cleavage.
- the extension of the poly (A) tail is strongly stimulated by the so-called "poly (A) binding protein II” (PABII).
- PABII poly (A) binding protein II
- Further information and references can be found in Wahl, E. (1995) Biochemica at Biophysica Acta, 1261, 183. Thus Wahl, E. (1995) describes e.g. in addition to the AAUAAA binding sequence, other consensus motifs such as a GU-rich region with the proposed consensus sequence YGUGUUYY and U-rich elements (see also Proudfoot, N. (1991) Cell, 64, 671-674).
- the present invention therefore relates to 3 'non-coding regions which form a binding site for the CPSF protein, the CstF protein, the CF I protein, the CF II protein, the poly (A) Polymerase and / or the poly (A) binding protein II (PABII) contains, such as, for example, an AATAAA binding site designated in the form of its cDNA form, ATTAAA binding site, a GT-rich element, in particular a YGTGTTY ⁇ element, and / or a T-rich element.
- a protein from the DEAD protein superfamily is understood to mean proteins which have conserved motifs, of which a conserved motif contains the amino acid sequence DEAD, DEAH or DEXH.
- the proteins preferably contain sequence motifs which are responsible for a nucleic acid-binding activity, a helicase activity and / or an ATPase activity.
- the proteins contain RNA helicase and ATPase activity.
- FIG. 1 and FIG. 2 show examples of the conserved motifs for the DEAD protein superfamily and the DEAH, DEXH or DEAH * subfamilies.
- DEAD protein superfamily thus includes, within the meaning of the present invention, all proteins which fall under a group according to FIG. 1 or 2. Examples of such proteins are in Fuller-Pace, FV. (1994), supra, and Schmid , SR and Linder, P. (1992), Supra, further preferred proteins are those which give cells tolerance to isoxazole derivatives, such as leflunomide, and activity-related compounds, such as brequinar, and human proteins are particularly preferred, in particular those from Table 1 and the RNA helicase from EP-A-0778347.
- proteins with a molecular mass of approximately 100 to approximately 150 kD, in particular with a molecular mass of approximately 130 kD are preferably suitable and such with a so-called SR domain, ie an area of approximately 50 to 200 amino acids with an accumulation of arginine-tendon repeats .
- a nucleic acid codi is particularly suitable for the purposes of the present invention for human RNA helicase p135 according to EP 0778347 with the amino acid sequence according to FIG. 3. Table 1
- SNF2L1 SNF2L1 (SMBP2) P28370 *; L24544
- DDX9 (RNA helicase A) L13848; Y10658
- nucleic acid coding for a protein from the DEAH protein subfamily with a native 3 'non-coding region is the cDNA of human RNA helicase from EP-A-0778347 according to FIG. 5 of the present invention.
- the 3 'non-coding region of the said RNA helicase according to SEQ ID No. 10 is generally suitable in the sense of the present invention as a native 3'-non-coding region of human proteins from the DEAD protein superfamily and in particular from the DEAH protein subfamily.
- the vector according to the invention contains regulatory sequences which control the expression of the nucleic acid coding for a protein from the DEAD protein superfamily. All regulatory sequences known to the person skilled in the art are suitable for this.
- regulatory sequences from insect viruses preferably baculoviruses, in particular the promoter of polyhedra wrestling or 10K
- the native ATG start codon of the nucleic acid coding for a protein from the DEAD protein superfamily is replaced by a polyhedrin ATG translation initiation start site
- the invention is thus a chimeric nucleic acid from insect virus sequences on the 5'- End and downstream subsequent heterologous sequences, the 3 'non-coding part preferably containing native sequences to the heterologous part.
- This construct according to the invention enables a further advantageous increase in expression in insect cells.
- the nucleic acid according to the invention contains a nucleic acid coding for an oligopeptide of at least about 4, preferably of about 6, histidines between the ATG translation initiation start site and the region coding for the protein from the DEAD protein superfamily.
- a fusion protein is obtained from the selected protein from the DEAD protein superfamily and an N-terminally fused peptide which contains the histidines mentioned.
- the protein can be obtained in a particularly simple and effective manner, for example using a chromatography column containing metal ions, e.g. Clean a chromatography column containing nickel, such as a chromatography column containing Ni-NTA resin.
- NTA stands for the chelator “nitrilotriacetic acid” (Qiagen GmbH, Hilden).
- a nucleic acid which codes for the glutathione-S-transferase Smith, D.B. & Johnson, K.S. (1988) Gene, 67, 31-40
- the fusion proteins obtained in this way can also be purified in a simple manner using affinity chromatography and detected using a colorimetric test or an immunoassay.
- a suitable system is, for example, the vector pGEX from Pharmacia, Freiburg as the starting vector.
- Suitable proteases are, for example, thrombin or factor Xa.
- the thrombin cleavage site contains, for example, the amino acid sequence Leu-Val-Pro-Arg-Gly-Ser (see, for example, FIG. 3B).
- the factor Xa cleavage site contains, for example, the amino acid sequence Ile-Glu-Gly-Arg.
- a preferred 5 'region of the nucleic acid according to the present invention is, for example, a nucleic acid according to FIG.
- a nucleic acid suitable according to the invention is a nucleic acid containing the polyhedrin promoter, e.g. B. according to EP-B1-0 127 839, the nucleic acid p135-NT5C according to SEQ ID No. 12 containing the polyhedrin ATG translation initiation site and a sequence coding for 6 histidines and a nucleic acid according to SEQ ID No. 9 containing a nucleic acid coding for the RNA helicase p135 and its native 3'-non-coding region.
- the 5 ′ region of the nucleic acid according to the invention contains a nucleic acid which is suitable for a signal sequence, for example an insulin signal sequence, for example according to SEQ ID No. 13 in the form of the construct p135-NT5S, coded.
- a signal sequence for example an insulin signal sequence, for example according to SEQ ID No. 13 in the form of the construct p135-NT5S, coded.
- This construct also has the advantage that the desired protein can be worked up and purified particularly easily, since it is secreted directly into the culture medium due to the signal sequence and the signal sequence is thereby split off instead of accumulating the desired protein intracellularly in the insect cells.
- Other suitable signal sequences are the signal sequence of silk worm bombyxin (Congote, LF & Li, Q. (1994) Biochem.
- Another object of the present invention is a method for producing recombinant insect viruses which code for a protein from the DEAD protein superfamily according to the present invention, in which a vector according to the invention is introduced into insect cells together with insect virus wild-type DNA, and the resulting recombinants Insect viruses to be isolated.
- a suitable insect virus is, for example, the baculovirus, in particular the Autographa Californica virus.
- suitable insect cells are Spodoptera Frugiperda, Trichoplusia ni, Rachiplusia ou or Galleria Mellonela.
- the Autographa Californica strains E2, R9, S1 or S3 are particularly suitable, especially the Autographa Californica strain S3, Spodoptera Frugiperda strain 21 or Trichoplusia ni egg cells.
- oval cells of the corresponding insects or their larvae are also suitable.
- the recombinant insect virus according to the invention arises in the insect cells by homologous recombination of the vector according to the invention with the wild-type insect virus in question (see, for example, EP-B1-0127839 or U.S. Pat. 5,004,687).
- the recombinant insect virus can then be used to produce the desired protein.
- Another object of the present invention therefore also relates to a method for producing a protein from the DEAD protein superfamily, in which a vector or a recombinant insect virus according to the invention is introduced into insect cells or insect larvae, which cultivates the insect cells or larvae under suitable conditions and the expressed protein is isolated.
- Insect cells are preferably infected with recombinant insect virus, the duration of infection preferably being about 40 to about 90, in particular about 70 hours.
- the production of a recombinant insect virus or the production of a desired protein in insect cells is carried out by methods which are generally known to the person skilled in the art, such as are described, for example, in EP-B1-0127839 or US Pat. No. 5,004,687. It is suitable however, also commercially available baculovirus expression systems such as, for example, the Baculo Gold TM transfection kit from Pharmingen or the Bac-to-Bac TM baculovirus expression system from Gibco BRL.
- An advantage of the insect cell expression vectors according to the invention or the methods according to the invention is that, surprisingly, larger amounts, generally about 300-400 mg per 10 9 cells, of proteins from the DEAD protein superfamily, in particular of proteins with a molecular mass of> about 100 kD and especially proteins with a so-called SR domain can be produced.
- Another object of the present invention therefore relates to the use of an insect cell vector according to the invention for producing a protein from the DEAD protein superfamily.
- the designated proteins are suitable, for example, for the production of corresponding test systems according to EP-A-0778347 or for the treatment of a disease as in EP-A-0778347 or in Ellis N.A. (1997), supra.
- FIG. 1 shows schematically the conserved areas of the proteins from the DEAD protein superfamily and the DEAH and DEXH subfamilies, and, as an example, the conserved areas of the protein elF-4A.
- the numbers between the areas indicate the distances in amino acids.
- X stands for any amino acid.
- FIG. 2 schematically describes the conserved areas and their known functions of the proteins for the DEAD, DEAH, DEXH and DEAH * families, according to Fuller-Pace, FV (1994), supra.
- SEQ ID No. 7 shows the amino acid sequence of the human RNA helicase p135.
- the RS domain is position 131 to 253.
- SEQ ID No. 8 shows the nucleic acid sequence of the human RNA helicase p135.
- SEQ ID No. 9 shows the nucleic acid sequence of the human RNA helicase p135 including its 3 'non-coding region.
- SEQ ID No. 10 is p135-NT3 SEQ ID No. 11 is p135-Pi3 SEQ ID No. 12 is p135-NT5C SEQ ID No. 13 is p135-NT5S SEQ ID No. 14 is p135-NTPS SEQ ID No. 15 is p135-NTGEX.
- FIGS. 3A and B schematically show the pAcHLT-A baculovirus transfer vector and coding sequences of the foreign component in the fusion protein (Invitrogen®). 3 B corresponds to SEQ ID No. 16 and SEQ ID No. 17
- Figures 4 A and B schematically show the pFASTBACI baculovirus transfer vector and the cloning site (Gibco-BRL). 4 B corresponds to SEQ ID No. 18th
- FIG. 5 shows schematically the production of the vector KL33.
- p135-CDS means the coding p135-DNA sequence from the 2nd coding base triplet to the last coding base triplet.
- p135-GS means the coding p135-DNA sequence from the 2nd coding base triplet to the last base of the 3'-untranslated region.
- FIG. 6 shows an overview of the gene constructs used for the expression of the p135 protein in different host cells.
- FIG. 7 shows an overview of deletion constructs of p135.
- N1 5 ' -ATGAATTCGGGGACACCAGTGAGGATGCCTCG-3 ' (SEQ ID No. 3) and N2: 5 ' -CCGATAATGTCTGTCTTTCCGGATATT-3 ' (SEQ ID No. 4)
- the PCR fragment together with the BspEI-Notl fragment of the cDNA of the p135 protein was used in a ligation reaction with the vector pAcHLT-A, which was linearized with the enzymes EcoRI and Notl.
- the plasmid KL33 thus obtained was by DNA sequencing confirmed.
- the 5'-untranslated region of the p135 cDNA is replaced by a so-called hexahistidine tag.
- This sequence section encodes a sequence of 6 histidine residues which facilitate the detection and the purification of the fusion protein obtained.
- a short section of the 3 'non-coding DNA is also inserted between the stop codon of the p135 cDNA and the terminator sequence specified by the vector pAcHLT-A.
- the plasmid KL33 was used in a baculovirus co-transfection.
- a plaque test was then carried out to identify recombinant baculoviruses.
- isolated plaques were then incubated with 1x10 6 SF21 cells (Invitrogen ®).
- the virus DNA was then isolated and used as a template for a PCR.
- the oligodeoxynucleotides N1 and N2 were used in this test PCR. Only in the case of recombinant baculoviruses, but not in the case of wild-type baculoviruses, a band of approx. 310 bp was found when analyzing the PCR batches in the agarose gel. Clone KL33 was sequenced for further confirmation.
- Well-grown SF21 cultures (approx. 2 ⁇ 10 7 cells) were infected with 200 ⁇ l of recombinant viruses in 75 cm 2 tissue culture areas and incubated for 7 days at 27 ° C. in order to obtain sufficient BV33 stock for the subsequent protein expressions in Trichoplusia ni egg cells (“ High-Five-Cells ", Invitrogen ® ).
- 3 ml of this stock solution in 100 ml SF21 culture (* 2 ⁇ 10 8 cells) in 250 ml spinner (Technomara ®) were incubated for 7 days at 27 ° C. for further propagation.
- the virus titer of the BV33 stock solution was determined using the virus titer assay.
- the p135 DNA was cloned into the vector pFASTBACI (Gibco-BRL) (see FIGS. 4A and B).
- the insulin signal sequence (p135-NT5S, SEQ ID No. 12) obtained from the hybridization of synthetic oligodeoxynucleotides and subsequent fill-in synthesis was first cloned in via the BamHi and EcoRI interface of this vector.
- the vector FB1 thus obtained was then linearized by restriction with EcoRI and NotI.
- the vector thus linearized was incubated together with the sequence p135-GS from the vector KL33 in the presence of T4 ligase.
- the protein p135 was obtained from the supernatants of infected HF cells (grown in a medium as described in Example 1, but without FCS) by concentrating the supernatant and subsequent chromatographic purification with appropriate homogeneity. The secretion into the culture medium made the processing and cleaning considerably easier.
- E.coii TOP10 cells (Invitrogen ® ) were transformed with the two clones Ec33-N and Ec33-M.
- the transformed cells obtained were, after confirmation of the successful transformation, minilysed to an OD800 of 0.7 and then induced with IPTG. After 1, 2, 3 and 4 hours, aliquots were analyzed for expression in SDS-PAGE. No expression products could be detected.
- deletion constructs D1 and D2 were expressed as described above (see FIG. 7). Expression products could be detected with construct D2, which represents an internal fragment.
- the P. pastoris cells from the KM71 strain were transformed according to the manufacturer's instructions (Invitrogen ® ). Likewise, for the analysis of the Proceed protein expression according to the manufacturer (Invitrogen ® , No. K1740-01). No expression products could be detected.
- deletion clones D1 and D2 were successfully expressed as described above.
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Abstract
Description
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Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU30272/99A AU755517B2 (en) | 1998-02-12 | 1999-02-09 | Expression vector for the production of dead proteins |
CA002320517A CA2320517A1 (en) | 1998-02-12 | 1999-02-09 | Expression vector for the production of dead proteins |
US09/601,537 US6582691B1 (en) | 1998-02-12 | 1999-02-09 | Expression vector for the production of dead proteins |
EP99911658A EP1054990A2 (de) | 1998-02-12 | 1999-02-09 | Expressionsvektor zur herstellung von dead-proteinen |
JP2000531571A JP2002503474A (ja) | 1998-02-12 | 1999-02-09 | Dead蛋白質生産用発現ベクター |
NO20004042A NO20004042L (no) | 1998-02-12 | 2000-08-11 | Ekspresjonsvektor for produksjon av DEAD-proteiner |
AU2004203288A AU2004203288B2 (en) | 1998-02-12 | 2004-07-20 | Methods and compositions for treating subterranean formations with gelled hydrocarbon fluids |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE19805781.4 | 1998-02-12 | ||
DE19805781 | 1998-02-12 |
Publications (3)
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WO1999041390A2 true WO1999041390A2 (de) | 1999-08-19 |
WO1999041390A3 WO1999041390A3 (de) | 1999-11-25 |
WO1999041390A8 WO1999041390A8 (de) | 1999-12-29 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/EP1999/000829 WO1999041390A2 (de) | 1998-02-12 | 1999-02-09 | Expressionsvektor zur herstellung von dead-proteinen |
Country Status (7)
Country | Link |
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US (1) | US6582691B1 (de) |
EP (1) | EP1054990A2 (de) |
JP (1) | JP2002503474A (de) |
AU (1) | AU755517B2 (de) |
CA (1) | CA2320517A1 (de) |
NO (1) | NO20004042L (de) |
WO (1) | WO1999041390A2 (de) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1993018157A1 (en) * | 1992-03-09 | 1993-09-16 | The Regents Of The University Of California | Compositions and methods for the identification and synthesis of sialyltransferases |
EP0778347A2 (de) * | 1995-12-04 | 1997-06-11 | Hoechst Aktiengesellschaft | ATP- und Nukleinsäure-bindendes Protein mit putativen Helikase- und ATPase Eigenschaften |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
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US5186933A (en) * | 1986-12-30 | 1993-02-16 | Baylor College Of Medicine | Synthesis and immunogenicity of rotavirus genes using a baculovirus expression system |
US5752245A (en) | 1994-12-09 | 1998-05-12 | Object Technology Licensing Corporation | Object-oriented system for configuration history management with a project workspace and project history database for draft identification |
-
1999
- 1999-02-09 JP JP2000531571A patent/JP2002503474A/ja active Pending
- 1999-02-09 EP EP99911658A patent/EP1054990A2/de not_active Withdrawn
- 1999-02-09 US US09/601,537 patent/US6582691B1/en not_active Expired - Fee Related
- 1999-02-09 WO PCT/EP1999/000829 patent/WO1999041390A2/de not_active Application Discontinuation
- 1999-02-09 CA CA002320517A patent/CA2320517A1/en not_active Abandoned
- 1999-02-09 AU AU30272/99A patent/AU755517B2/en not_active Ceased
-
2000
- 2000-08-11 NO NO20004042A patent/NO20004042L/no not_active Application Discontinuation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1993018157A1 (en) * | 1992-03-09 | 1993-09-16 | The Regents Of The University Of California | Compositions and methods for the identification and synthesis of sialyltransferases |
EP0778347A2 (de) * | 1995-12-04 | 1997-06-11 | Hoechst Aktiengesellschaft | ATP- und Nukleinsäure-bindendes Protein mit putativen Helikase- und ATPase Eigenschaften |
Non-Patent Citations (4)
Title |
---|
DANGEL ET AL.: "Human helicase gene SK12W in the HLA class III region exhibits striking structural similarities to the yeast antiviral gene SK12 and to the human gene KIAA0052: emergence of a new gene family" NUCLEIC ACID RESEARCH, Bd. 23, Nr. 12, 25. Juni 1995 (1995-06-25), Seiten 2120-2126, XP002116311 * |
HOMEPAGE PHARMINGEN, [Online] XP002116657 Retrieved from the Internet: <URL:http://www.pharmingen.com> * |
INVITROGEN HOMEPAGE, [Online] XP002116656 Retrieved from the Internet: <URL:http://www.invitrogen.com/vectors.htm l> * |
LEE ET AL.: "Human RNA Helicase A is homologous to the maleless protein of Drosophila" THE JOURNAL OF BIOLOGICAL CHEMISTRY, Bd. 268, Nr. 22, 5. August 1993 (1993-08-05), Seiten 16822-16830, XP002116310 * |
Also Published As
Publication number | Publication date |
---|---|
WO1999041390A8 (de) | 1999-12-29 |
AU3027299A (en) | 1999-08-30 |
NO20004042D0 (no) | 2000-08-11 |
NO20004042L (no) | 2000-10-10 |
CA2320517A1 (en) | 1999-08-19 |
WO1999041390A3 (de) | 1999-11-25 |
JP2002503474A (ja) | 2002-02-05 |
EP1054990A2 (de) | 2000-11-29 |
AU755517B2 (en) | 2002-12-12 |
US6582691B1 (en) | 2003-06-24 |
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