The phosphatase Cdc14 triggers mitotic exit by reversal of CDK-dependent phosphorylation

被引:643
作者
Visintin, R
Craig, K
Hwang, ES
Prinz, S
Tyers, M
Amon, A
机构
[1] Whitehead Inst Biomed Res, Cambridge, MA 02142 USA
[2] Mt Sinai Hosp, Samuel Lunenfeld Res Inst, Programme Canc & Mol Biol, Toronto, ON M5G 1X5, Canada
关键词
D O I
10.1016/S1097-2765(00)80286-5
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Exit from mitosis requires the inactivation of mitotic cyclin-dependent kinases (CDKs) by an unknown mechanism. We show that the Gdc14 phosphatase triggers mitotic exit: by three parallel mechanisms, each of which inhibits Cdk activity. Cdc14 dephosphorylates Sic1,a Cdk inhibitor, and Swi5, a transcription factor for SIC1, and induces degradation of mitotic cyclins, likely by dephosphorylating the activator of mitotic cyclin degradation, Cdh1/Hct1. Feedback between these pathways may lead to precipitous collapse of mitotic CDK activity and help coordinate exit from mitosis.
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收藏
页码:709 / 718
页数:10
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