CDK3 (Cyclin Dependent Kinase 3) is a Protein Coding gene. Diseases associated with CDK3 include Star Syndrome. Among its related pathways are Cell Cycle Control of Chromosomal Replication and GADD45 Pathway. CDK3 encodes a member of the cyclin-dependent protein kinase family. The protein promotes entry into S phase, in part by activating members of the E2F family of transcription factors.