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CDKN3 encodes a dual specificity protein phosphatase which has been identified as a cyclin-dependent kinase inhibitor and has been shown to interact with, and dephosphorylate human CDK2 kinase. CDKN3 has also been shown to associate with human CDK3 and CDC2. The protein has been reported to remove phosphate from tyrosine residues in model substrates in vitro; however, a mutant protein that bears a lesion in the putative active site cysteine has been shown to lose catalytic activity. In HeLa cells, CDKN3 has been demonstrated to be expressed at the G1 to S transition and overexpression of wild-type CDKN3 has been shown to delay progression through the cell cycle. This gene has been reported to be deleted, mutated, or overexpressed in several kinds of cancers, including breast and prostate cancers.
Gene Name: | cyclin-dependent kinase inhibitor 3 |
Family/Subfamily: | Protein Phosphatase , Protein Phosphatase - Dual specificity other |
Synonyms: | CDKN3, CIP2, Kinase-associated phosphatase, KAP, KAP1, CDI1, CDK-associated phosphatase, Kinase associated phosphatase |
Target Sequences: | NM_005192 NP_005183.2 Q16667 |
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