Preparation of recombinant ubiquitin cross-reactive protein (UCRP) with
improved bioactivity
    3.
    发明授权
    Preparation of recombinant ubiquitin cross-reactive protein (UCRP) with improved bioactivity 失效
    具有改善的生物活性的重组泛素交叉反应蛋白(UCRP)的制备

    公开(公告)号:US5714347A

    公开(公告)日:1998-02-03

    申请号:US577640

    申请日:1995-12-22

    IPC分类号: C07K14/00 C12N15/12 C07K14/47

    CPC分类号: C07K14/00

    摘要: A method of preparing recombinant ubiquitin cross-reactive protein (UCRP) is disclosed. In one embodiment, the method comprises the step of purifying UCRP from a host cell in the presence of a cobalt or Group IIb metal, wherein the cobalt or Group IIb metal prevents proteolytic inactivation of UCRP occurring by cleavage of the UCRP carboxyl terminal glycine dipeptide. In another embodiment the method comprises purifying UCRP comprising an additional arginine or lysine residue at the carboxy terminal. A preparation of UCRP with an additional arginine residue at the carboxy terminus is also disclosed.

    摘要翻译: 公开了一种制备重组泛素交叉反应蛋白(UCRP)的方法。 在一个实施方案中,所述方法包括在钴或IIb族金属存在下从宿主细胞中纯化UCRP的步骤,其中所述钴或IIb族金属通过UCRP羧基末端甘氨酸二肽的切割来防止UCRP的蛋白水解失活。 在另一个实施方案中,该方法包括在羧基末端纯化包含另外的精氨酸或赖氨酸残基的UCRP。 还公开了在羧基末端具有另外的精氨酸残基的UCRP的制备。