UBA1 adenylates ubiquitin in the cytosol
收藏reactome.org2025-03-22 收录
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Activation of ubiquitin by UBA1 proceeds through 3 steps: adenylation of ubiquitin, conjugation of ubiquitin from adenyl-ubiquitin to an internal cysteine residue of UBA1, and adenylation of a second molecule of ubiquitin. In the first step the adenylation module of UBA1 catalyzes the acyl-adenylation of the C-terminal glycine of ubiquitin (Jin et al. 2007, inferred from the rabbit homologue in Haas et al. 1982, Hershko et al. 1983, reviewed in Groettrup et al. 2008).
泛素化酶 UBA1 的泛素激活过程分为三个步骤:泛素腺苷化、泛素从腺苷泛素转移到 UBA1 的内部半胱氨酸残基的共价结合,以及第二个泛素分子的腺苷化。在第一步中,UBA1 的腺苷化模块催化泛素 C 端甘氨酸的酰基腺苷化(Jin 等人,2007 年,根据 Haas 等人(1982 年)中兔同源物的推断,Hershko 等人(1983 年),Groettrup 等人(2008 年)综述)。
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