Ubiquitylation and proteasomal degradation of the p21Cip1, p27Kip1 and p57Kip2 CDK inhibitors
摘要:
The expression levels of the p21(Cip1) family CDK inhibitors (CKIs), p21(Cip1), p27(Kip1) and p57(Kip2), play a pivotal role in the precise regulation of cyclin-dependent kinase (CDK) activity, which is instrumental to proper cell cycle progression. The stabilities of p21(Cip1), p27(Kip1) and p57(Kip2) are all tightly and differentially regulated by ubiquitylation and proteasome-mediated degradation during various stages of the cell cycle, either in steady state or in response to extracellular stimuli, which often elicit site-specific phosphorylation of CKIs triggering their degradation.
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关键词:
Animals Humans Proteasome Endopeptidase Complex Cyclin-Dependent Kinase Inhibitor p21 Cyclin-Dependent Kinase Inhibitor p27 Ubiquitination Cell Cycle Cyclin-Dependent Kinases Cyclin-Dependent Kinase Inhibitor p57
DOI:
10.4161/cc.9.12.11988
被引量:
年份:
2010




























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