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Trends Biochem Sci. 1998 Sep;23(9):337-41.

Inhibiting CDK inhibitors: new lessons from DNA tumor viruses.

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  • 1Dept of Dermatology, Friedrich-Alexander-University, Erlangen, Germany.


The ability of viral oncoproteins to inactivate the retinoblastoma and p53 tumor suppressors provides mechanisms for bypassing the normal inhibitory activities of cyclin-dependent-kinase inhibitors (CKIs). Recent studies point to novel mechanisms for inhibiting the activities of the CKIs p21CIP1 and p27KIP1 activity. Such mechanisms involve the binding of viral oncoproteins or other proteins to these CKIs and suggest a model in which the cell-cycle activities of p21CIP1 are coordinated through protein-protein interactions.

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