Source:http://linkedlifedata.com/resource/umls/id/C1150557
GO: Catalysis of the reaction: ATP + a protein = ADP + a phosphoprotein. This reaction requires the binding of a regulatory cyclin subunit and full activity requires stimulatory phosphorylation by a CDK-activating kinase (CAK). [GOC:rn, PMID:7877684, PMID:9841670]