| 单词 | cdkn1a |
| 释义 | CDKN1ACDKN1AA gene on chromosome 6p21.2 that encodes a cyclin-dependent kinase inhibitor, which binds to and inhibits the activity of cyclin-CDK2 or -CDK4 complexes, thus acting as a regulator of cell cycle progression at G1. CDKN1A expression is controlled by p53, a tumour suppressor that mediates p53-dependent cell cycle G1-phase arrest in response to various stress stimuli. CDKN1A is specifically cleaved by CASP3-like caspases, activating CDK2 and possibly also the apoptosis pathway. |
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