A CELL-CYCLE-REGULATED INHIBITOR OF CYCLIN-DEPENDENT KINASES

被引:277
|
作者
HENGST, L [1 ]
DULIC, V [1 ]
SLINGERLAND, JM [1 ]
LEES, E [1 ]
REED, SI [1 ]
机构
[1] MASSACHUSETTS GEN HOSP, CTR CANC, MOLEC ONCOL LAB, BOSTON, MA 02129 USA
关键词
D O I
10.1073/pnas.91.12.5291
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
Cyclin-dependent kinases (Cdks) previously have been shown to drive the major cell cycle transitions in eukaryotic organisms ranging from yeast to humans. We report here the identification of a 28-kDa protein, p28(Ick) (inhibitor of cyclin-dependent kinase), that binds to and inhibits the kinase activity of preformed Cdk/cyclin complexes from human cells. p28 inhibitory activity fluctuates during the cell cycle with maximal levels in G(1) and accumulates in G(1)- and G(0)-arrested cells. These results suggest that control of the G(1)/S transition may be influenced by a family of Cdk inhibitors that include p28(Ick) and the recently described inhibitors p21(Cip1/Waf1/Cap20) and p16(Ink4).
引用
收藏
页码:5291 / 5295
页数:5
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