cyclin dependent kinase 6 (CDK6) Homo sapiens The protein encoded by this gene is a member of the cyclin-dependent protein kinase (CDK) family. CDK family members are highly similar to the gene products of Saccharomyces cerevisiae cdc28 , and Schizosaccharomyces pombe cdc2 , and are known to be important regulators of cell cycle progression. This kinase is a catalytic subunit of the protein kinase complex that is important for cell cycle G1 phase progression and G1/S transition. The activity of this kinase first appears in mid-G1 phase , which is controlled by the regulatory subunits including D-type cyclins and members of INK4 family of CDK inhibitors. This kinase , as well as CDK4 , has been shown to phosphorylate , and thus regulate the activity of , tumor suppressor protein Rb. Expression of this gene is up-regulated in some types of cancer. Multiple alternatively spliced variants , encoding the same protein , have been identified. [provided by RefS
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