Recombinant inactive core streptavidin mutants
    62.
    发明授权
    Recombinant inactive core streptavidin mutants 失效
    重组非活性核心链霉亲和素突变体

    公开(公告)号:US06312916B1

    公开(公告)日:2001-11-06

    申请号:US08831399

    申请日:1997-04-01

    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。

    Host-vector system
    63.
    发明授权
    Host-vector system 有权
    主机矢量系统

    公开(公告)号:US06291245B1

    公开(公告)日:2001-09-18

    申请号:US09344888

    申请日:1999-06-25

    IPC分类号: C12N1574

    摘要: A prokaryotic expression vector including an origin of replication, at least one eukaryotic auxotrophy marker gene which encodes an enzyme required for the synthesis of a product necessary for the survival of at auxotrophic prokaryote under the control of a eukaryotic promoter, a foreign gene under the control of a prokaryotic promoter, and one or more transcription terminators.

    摘要翻译: 包含复制起点的原核表达载体,至少一个编码在真核启动子控制下营养缺陷型原核生物所需的产物合成所需的酶的真核营养缺陷型标记基因,在控制下的外源基因 的原核启动子和一个或多个转录终止子。

    Recombinant core-streptavidin
    65.
    发明授权
    Recombinant core-streptavidin 失效
    重组核心 - 链霉抗生物素蛋白

    公开(公告)号:US5489528A

    公开(公告)日:1996-02-06

    申请号:US211833

    申请日:1994-04-28

    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: PCT No.PCT / EP92 / 02463。 371日期1994年04月28日 102(e)日期1994年4月28日PCT提交1992年10月28日PCT公布。 公开号WO93 / 09144 日本1993年5月13日。本发明涉及分离重组核心链亲和素的方法,其中宿主细胞用编码核心链霉亲和素的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为 表达,并且从宿主细胞或培养基中分离重组核心链霉抗生物素蛋白,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。