Method for recombinant production of polypeptides
    16.
    发明申请
    Method for recombinant production of polypeptides 有权
    重组生产多肽的方法

    公开(公告)号:US20050003485A1

    公开(公告)日:2005-01-06

    申请号:US10866567

    申请日:2004-06-12

    CPC分类号: C12P21/02

    摘要: A method for the recombinant production of a polypeptide by expressing a nucleic acid encoding said polypeptide in a microbial host cell, forming in the cytoplasm of said host cell inclusion bodies containing said polypeptide, and isolating, solubilizing and naturing said polypeptide, characterized in that after fermentation the host cell or the host cell content is incubated at a temperature of 40° C. or higher for at least 10 minutes and subsequently insoluble polypeptide is isolated from the host cell, this method providing an improved yield in inclusion bodies containing the desired polypeptide.

    摘要翻译: 一种通过在微生物宿主细胞中表达编码所述多肽的核酸重组产生多肽的方法,在包含所述多肽的所述宿主细胞包涵体的细胞质中形成,并分离,增溶和变性所述多肽,其特征在于, 将宿主细胞或宿主细胞含量发酵在40℃或更高的温度下孵育至少10分钟,随后从宿主细胞中分离不溶性多肽,该方法在含有所需多肽的包涵体中提供改善的产量 。

    Recombinant inactive avidin mutants
    17.
    发明授权
    Recombinant inactive avidin mutants 有权
    重组无活性抗生物素蛋白突变体

    公开(公告)号:US06391571B1

    公开(公告)日:2002-05-21

    申请号:US09366862

    申请日:1999-08-04

    IPC分类号: G01N3353

    摘要: The present invention concerns muteins of avidin and streptavidin with a reduced binding affinity for biotin as well as their use as interference elimination reagents in methods for the determination of an analyte e.g. in diagnostic tests such as for example immunoassays and nucleic acid hybridization assays. In addition the invention concerns the use of muteins of avidin and streptavidin as systems capable of regeneration for binding biotin e.g. for the analysis of biotinylated molecules, for examining receptor ligand interactions as well as for the affinity purification of biotinylated molecules.

    摘要翻译: 本发明涉及抗生物素蛋白和链霉抗生物素蛋白的突变蛋白,其对生物素的结合亲和力降低,以及它们在测定分析物的方法中用作干扰消除试剂。 在诊断测试中,例如免疫测定和核酸杂交测定。 此外,本发明涉及抗生物素蛋白和链霉抗生物素蛋白的突变蛋白作为能够再生以结合生物素的体系的用途。 用于分析生物素化分子,用于检查受体配体相互作用以及生物素化分子的亲和纯化。

    Process for the production of peptides by way of streptavidin fusion
proteins
    18.
    发明授权
    Process for the production of peptides by way of streptavidin fusion proteins 失效
    通过链霉抗生物素蛋白融合蛋白制备肽的方法

    公开(公告)号:US6136564A

    公开(公告)日:2000-10-24

    申请号:US68738

    申请日:1998-06-25

    申请人: Erhard Kopetzki

    发明人: Erhard Kopetzki

    摘要: The invention relates to a process for recombinant preparation of peptides by expression of a DNA in micro-organisms, which DNA codes for a fusion protein made of streptavidin and one of the said peptides. Streptavidin and the peptide are bound by a peptide sequence which can be cleaved by an endoproteinase. The process also includes isolation of the insoluble, inactive protein, solublisation of the inactive protein using a denaturant, dilution of the denaturant at a pH value of between 8.5 and 11 until cleaving of the fusion protein by an endoproteinase can take place, cleaving of the fusion protein, lowering of the pH value until streptavin and non-cleaved fusion protein precipitate, and cleaning of the desired peptide from the supernatant. Said process is particularly suitably for producing parathromone and urodilatin and fragments thereof.

    摘要翻译: PCT No.PCT / EP96 / 04850 Sec。 371日期:1998年6月25日第 102(e)日期1998年6月25日PCT提交1996年11月6日PCT公布。 出版物WO97 / 日期1997年5月22日本发明涉及通过在微生物中表达DNA重组制备肽的方法,该DNA编码由链霉抗生物素蛋白和所述肽之一制成的融合蛋白。 链霉亲和素和肽被肽序列结合,肽序列可被内蛋白酶切割。 该方法还包括使用变性剂分离不溶性无活性蛋白质,使非变性蛋白质溶解,在8.5至11之间的pH值下稀释变性剂,直到可以通过内蛋白酶切割融合蛋白,切割 融合蛋白,降低pH值直至链霉亲和素和未切割的融合蛋白沉淀,并从上清液中清洗所需的肽。 所述方法特别适用于产生相关参考物和尿嘧啶及其片段。

    Yeast host strains with defects in N-glycosylation
    19.
    发明授权
    Yeast host strains with defects in N-glycosylation 失效
    具有N-糖基化缺陷的酵母宿主菌株

    公开(公告)号:US5798226A

    公开(公告)日:1998-08-25

    申请号:US651323

    申请日:1996-05-31

    摘要: Saccharomyces mutants with defects in N-glycosylation which are obtainable by �.sup.3 H!-mannose suicide selection, introduction of one or several selective markers, selection of those strains which, after transformation with the plasmid YEpL/glucose oxidase, secrete 10 mg/l glucose oxidase or more into the culture medium after culture under standard conditions, are allelic to the ngd mutations in Saccharomyces cerevisiae, DSM 7042, DSM 7338, DSM 7160 and/or 7340 and express proteins with a uniform carbohydrate structure.

    摘要翻译: 具有N-糖基化缺陷的糖酵母突变体,其可以通过[3 H] - 甘露糖自杀选择,引入一个或几个选择性标记,选择在用质粒YEpL /葡萄糖氧化酶转化后分泌10mg / l葡萄糖 在标准条件下培养后的氧化酶或更多进入培养基,等同于酿酒酵母,DSM 7042,DSM 7338,DSM 7160和/或7340中的ngd突变,并表达具有均匀碳水化合物结构的蛋白质。

    Recombinant core streptavidin
    20.
    发明授权
    Recombinant core streptavidin 失效
    重组核心链霉亲和素

    公开(公告)号:US5672691A

    公开(公告)日:1997-09-30

    申请号:US434718

    申请日:1995-05-04

    CPC分类号: C07K14/36

    摘要: The present invention concerns a process for the isolation of recombinant core streptavidin in which host cells are transformed with a DNA coding for core streptavidin, the transformed host cells are cultured under suitable conditions, the DNA coding for core streptavidin is expressed and the recombinant core streptavidin is isolated from the host cells or the culture medium, wherein a DNA coding for core streptavidin is used which has (a) the nucleotide sequence shown in SEQ ID NO. 1 or (b) a nucleotide sequence corresponding to the nucleotide sequence (a) within the scope of the degeneracy of the genetic code.

    摘要翻译: 本发明涉及分离重组核心链霉抗生物素蛋白的方法,其中宿主细胞用编码核心链霉抗生物素蛋白的DNA转化,转化的宿主细胞在合适的条件下培养,编码核心链霉抗生物素蛋白的DNA被表达,重组核心链霉亲和素 从宿主细胞或培养基中分离,其中使用编码核心链亲和素的DNA,其具有(a)SEQ ID NO: 1或(b)对应于遗传密码简并范围内的核苷酸序列(a)的核苷酸序列。