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    • 7. 发明申请
    • METHOD FOR PREPARING TRIMERIC PROTEINS
    • 制备TRIMERIC蛋白的方法
    • WO2007030803A9
    • 2008-05-29
    • PCT/US2006035225
    • 2006-09-11
    • ZYMOGENETICS INCMOORE MARGARET DFOX BRIAN A
    • MOORE MARGARET DFOX BRIAN A
    • C12N15/63
    • C12N15/62A61K38/00C07K14/005C07K14/705C07K2319/03C07K2319/81C12N2740/10022C12N2740/13022
    • The present invention relates to a method of preparing a trimeric protein comprising culturing a host cell transformed or transfected with an expression vector encoding a fusion protein comprising a ZymoZipper (ZZ) domain and a heterologous protein. In one embodiment, the heterologous protein is a membrane protein, the portion of the heterologous protein that included in the fusion protein is the extracellular domain of that protein, and the resulting fusion protein is soluble. In another embodiment of the present invention, the ZZ domain is derived from the transmembrane (TM) subunit of a virus envelope protein or another heptad repeat containing gene of a virus genome. The method can be used to produced homo- and hetero-trimeric proteins. The present invention also encompasses DNA molecules, expression vectors, and host cells used in the present method and fusion proteins produced by the present method.
    • 本发明涉及三聚蛋白的制备方法,其包括用编码包含ZymoZipper(ZZ)结构域和异源蛋白质的融合蛋白的表达载体转化或转染的宿主细胞。 在一个实施方案中,异源蛋白质是膜蛋白,融合蛋白中包含的异源蛋白质的部分是该蛋白质的细胞外结构域,并且所得的融合蛋白质是可溶的。 在本发明的另一个实施方案中,ZZ结构域衍生自病毒包膜蛋白的跨膜(TM)亚基或其它含有病毒基因组的七重复重复基因。 该方法可用于产生同型和异三聚体蛋白质。 本发明还包括本方法中使用的DNA分子,表达载体和宿主细胞以及通过本发明方法产生的融合蛋白。