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CCND1 cyclin D1

Also known as: BCL1; PRAD1; U21B31; D11S287E


The protein encoded by this gene belongs to the highly conserved cyclin family, whose members are characterized by a dramatic periodicity in protein abundance throughout the cell cycle. Cyclins function as regulators of CDK kinases. Different cyclins exhibit distinct expression and degradation patterns which contribute to the temporal coordination of each mitotic event. This cyclin forms a complex with and functions as a regulatory subunit of CDK4 or CDK6, whose activity is required for cell cycle G1/S transition. This protein has been shown to interact with tumor suppressor protein Rb and the expression of this gene is regulated positively by Rb. Mutations, amplification and overexpression of this gene, which alters cell cycle progression, are observed frequently in a variety of tumors and may contribute to tumorigenesis. [provided by RefSeq, Jul 2008]

Genomic context

Chromosome: 11; NC_000011.10 (69641105..69654474)
Total number of exons:


  • BioSystems
  • CCND1 database
  • ClinVar
    Related medical variations
  • dbVar
    Link from Gene to dbVar
  • MedGen
    Related information in MedGen
  • OMIM
    Links between OMIM and Gene are calculated by Gene based on MIM numbers included in the summary and phenotype sections of the Gene record.
  • PubMed (OMIM)
    Links are provided when Gene has a link to a record in OMIM, and OMIM explicitly cites these publications in PubMed.
  • RefSeq RNAs
    Link to Nucleotide RefSeq RNAs
  • RefSeqGene
    Link to Nucleotide RefSeqGenes
  • SNP: GeneView
    SNPs linked from GeneView

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