Site-directed mutant p21 proteins defective in both inhibition of E2F-regulated transcription and disruption of E2F-p130-cyclin-cdk2 complexes.


P21 is a regulatory protein that can contribute to cell cycle arrest by inhibiting the cyclin-dependent-kinases (cdks). However, the mechanism that links the inhibition of the cdk activities and the cell cycle arrest is not well established. To investigate this, we studied a purified endogenous cellular complex which contained E2F (in the form of E2F-4… (More)


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