CDKN2A
LOCUS ID1029
GENE_SYMBOLCDKN2A
GENE NAMEcyclin-dependent kin
SYNONYMNSARF, MLM, P14, P16, P19,
CHROMOSOME9
HOMOLOGENE ID55430
GENE SUMMARY
This gene generates several transcript variants which differ in their first exons. At least three altertively spliced variants encoding distinct proteins have been reported, two of which encode structurally related isoforms known to function as inhibitors of CDK4 kise. The remaining transcript includes an alterte first exon located 20 Kb upstream of the remainder of the gene; this transcript contains an alterte open reading frame (ARF) that specifies a protein which is structurally unrelated to the products of the other variants. This ARF product functions as a stabilizer of the tumor suppressor protein p53 as it can interact with, and sequester, the E3 ubiquitin-protein ligase MDM2, a protein responsible for the degradation of p53. In spite of the structural and functiol differences, the CDK inhibitor isoforms and the ARF product encoded by this gene, through the regulatory roles of CDK4 and p53 in cell cycle G1 progression, share a common functiolity in cell cycle G1 control. This gene is frequently mutated or deleted in a wide variety of tumors, and is known to be an important tumor suppressor gene. [provided by RefSeq, Sep 2012]

CDKN2A
LOCUS ID1029
GENE_SYMBOLCDKN2A
GENE NAMEcyclin-dependent kin
SYNONYMNSARF, MLM, P14, P16, P19,
CHROMOSOME9
HOMOLOGENE ID55430
GENE SUMMARY
This gene generates several transcript variants which differ in their first exons. At least three altertively spliced variants encoding distinct proteins have been reported, two of which encode structurally related isoforms known to function as inhibitors of CDK4 kise. The remaining transcript includes an alterte first exon located 20 Kb upstream of the remainder of the gene; this transcript contains an alterte open reading frame (ARF) that specifies a protein which is structurally unrelated to the products of the other variants. This ARF product functions as a stabilizer of the tumor suppressor protein p53 as it can interact with, and sequester, the E3 ubiquitin-protein ligase MDM2, a protein responsible for the degradation of p53. In spite of the structural and functiol differences, the CDK inhibitor isoforms and the ARF product encoded by this gene, through the regulatory roles of CDK4 and p53 in cell cycle G1 progression, share a common functiolity in cell cycle G1 control. This gene is frequently mutated or deleted in a wide variety of tumors, and is known to be an important tumor suppressor gene. [provided by RefSeq, Sep 2012]