Proteolytic ratchets that control progression through mitosis

被引:110
作者
Townsley, FM [1 ]
Ruderman, JV [1 ]
机构
[1] Harvard Univ, Sch Med, Dept Cell Biol, Boston, MA 02115 USA
关键词
D O I
10.1016/S0962-8924(98)01268-9
中图分类号
Q2 [细胞生物学];
学科分类号
071009 ; 090102 ;
摘要
A key player in mitotic progression is a cell-cycle-regulated ubiquitin-protein ligase complex known as the anaphase-promoting complex or cyclosome (APC/C). The APC/C is part of the machinery that promotes the metaphase-anaphase transition by mediating the ubiquitin-dependent destruction of anaphase inhibitors and initiates exit from mitosis by degrading mitotic cyclins. This review describes the known components and substrates of the mitotic ubiquitination machinery and discusses how a new subfamily of proteins that contain the WD40 repeat (the Fizzy/Cdc20p family) might activate the APC/C to allow temporal differences in substrate ubiquitination during progression through mitosis.
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页码:238 / 244
页数:7
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