Multiflavor streptavidin
    1.
    发明授权
    Multiflavor streptavidin 失效
    多重链霉抗生物素蛋白

    公开(公告)号:US06368813B1

    公开(公告)日:2002-04-09

    申请号:US09381430

    申请日:2000-03-23

    IPC分类号: G01N3353

    CPC分类号: C07K14/36

    摘要: Compounds and methods are described for producing streptavidin mutants with changed affinities. In particular, modifications to the sequence of the natural streptavidin gene is described to create amino acid substitutions resulting in greater affinity for biotin substitutes than for biotin.

    摘要翻译: 描述了用于生产具有改变的亲和力的链霉抗生物素蛋白突变体的化合物和方法。 特别地,描述了对天然链霉亲和素基因的序列的修饰以产生氨基酸取代,导致对生物素替代物的亲和力高于生物素。

    Streptavidin mutants
    3.
    发明授权
    Streptavidin mutants 失效
    链霉亲和素突变体

    公开(公告)号:US6022951A

    公开(公告)日:2000-02-08

    申请号:US628540

    申请日:1996-04-10

    摘要: The present invention relates to streptavidin proteins and peptides having a altered physical properties such as an increased stability or increased or decreased affinity for binding biotin. The invention also relates to methods for the detection, identification, separation and isolation of targets using streptavidin proteins or peptides. Streptavidin with increased or reduced affinity allows for the use of the streptavidin-biotin coupling systems for detection and isolation systems wherein it is necessary to remove of one or the other of the binding partners. Such systems are useful for the purification of functional proteins and viable cells. The invention also relates to nucleic acids which encode these streptavidin proteins and peptides and to recombinant cells such as bacteria, yeast and mammalian cells which contain these nucleic acids.

    摘要翻译: 本发明涉及链霉抗生物素蛋白和具有改变的物理性质例如增加的稳定性或增加或降低的结合生物素的亲和力的肽。 本发明还涉及使用链霉亲和素蛋白或肽检测,鉴定,分离和分离靶的方法。 具有增加或降低亲和力的链霉亲和素允许使用链霉抗生物素蛋白 - 生物素偶联系统进行检测和分离系统,其中必须除去一种或另一种结合配偶体。 这样的系统可用于纯化功能性蛋白质和活细胞。 本发明还涉及编码这些链霉抗生物素蛋白和肽以及含有这些核酸的重组细胞如细菌,酵母和哺乳动物细胞的核酸。