| Literature DB >> 20519948 |
Abstract
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.Entities:
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Year: 2010 PMID: 20519948 PMCID: PMC3319752 DOI: 10.4161/cc.9.12.11988
Source DB: PubMed Journal: Cell Cycle ISSN: 1551-4005 Impact factor: 4.534