Domains of rasGAP and rhoGAP are related

被引:17
作者
Bax, B [1 ]
机构
[1] Univ London Birkbeck Coll, Dept Crystallog, London WC1E 7HX, England
关键词
D O I
10.1038/33040
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Guanine-nucleotide-binding (G) proteins are ‘switched off’ by the hydrolysis of their bound GTP. The GTP bound to the G protein Ras is hydrolysed intrinsically at a very slow rate1, so, in vivo, Ras is turned off by GTPase-activating proteins (GAPs). The structures of GTPase-activating domains (GAP domains), which usually occur as parts of larger proteins, indicate that the Ras and Rho families of small G proteins and their GAPs evolved in parallel.
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页码:447 / 448
页数:2
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