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CDK4  Protein, Antibody, ELISA Kit, cDNA Clone

CDK4 Related Area

CDK4 関連経路

CDK4 サマリー & タンパク質情報

CDK4 背景

遺伝子の概要: The protein encoded by this gene is a member of the Ser/Thr protein kinase family. This protein is highly similar to the gene products of S. cerevisiae cdc28 and S. pombe cdc2. It is a catalytic subunit of the protein kinase complex that is important for cell cycle G1 phase progression. The activity of this kinase is restricted to the G1-S phase, which is controlled by the regulatory subunits D-type cyclins and CDK inhibitor p16(INK4a). This kinase was shown to be responsible for the phosphorylation of retinoblastoma gene product (Rb). Mutations in this gene as well as in its related proteins including D-type cyclins, p16(INK4a) and Rb were all found to be associated with tumorigenesis of a variety of cancers. Multiple polyadenylation sites of this gene have been reported.
General information above from NCBI
触媒活性: ATP + a protein = ADP + a phosphoprotein. {ECO:0000269|PubMed:19075005, ECO:0000269|PubMed:19237565, ECO:0000269|PubMed:9106657}.
酵素調節: ENZYME REGULATION: Both phosphorylation at Thr-172 and binding of a D-type cyclin are necessary for enzymatic activity. Full activation of the cyclin-D-CDK4 complex appears to require other factors such as recruitment of the substrate via a substrate recruitment motif, and/or formation of the CDKN1B ternary complex. Inhibited by INK4 family members. In resting cells, the non-tyrosine-phosphorylated form of CDKN1B prevents phosphorylation at Thr-172 and inactivation, while, in proliferating cells, tyrosine phosphorylation of CDKN1B allows phosphorylation of Thr-172 of CDK4 and subsequennt activation. {ECO:0000269|PubMed:19487459}.
サブユニット構造: Component of the D-CDK4 complex, composed of CDK4 and some D-type G1 cyclin (CCND1, CCND2 or CCND3). Interacts directly in the complex with CCND1, CCND2 or CCND3. Interacts with SEI1 and ZNF655. Forms a ternary complex, cyclin D-CDK4-CDKN1B, involved in modulating CDK4 enzymatic activity. Interacts directly with CDKN1B (phosphorylated on 'Tyr-88' and 'Tyr-89'); the interaction allows assembly of the cyclin D-CDK4 complex, Thr-172 phosphorylation, nuclear translocation and enhances the cyclin D-CDK4 complex activity. CDK4 activity is either inhibited or enhanced depending on stoichiometry of complex. The non-tyrosine-phosphorylated form of CDKN1B prevents T-loop phosphorylation of CDK4 producing inactive CDK4. Interacts (unphosphorylated form) with CDK2. Also forms ternary complexes with CDKN1A or CDKN2A. Interacts directly with CDKN1A (via its N-terminal); the interaction promotes the assembly of the cyclin D-CDK4 complex, its nuclear translocation and promotes the cyclin D-dependent enzyme activity of CDK4. Interacts with CCND1; the interaction is prevented with the binding of CCND1 to INSM1 during cell cycle progression. Interacts with CEBPA (when phosphorylated) (PubMed:15107404). {ECO:0000250|UniProtKB:P30285, ECO:0000269|PubMed:10580009, ECO:0000269|PubMed:15107404, ECO:0000269|PubMed:15558030, ECO:0000269|PubMed:16782892, ECO:0000269|PubMed:18827403, ECO:0000269|PubMed:19075005, ECO:0000269|PubMed:19124461, ECO:0000269|PubMed:19237555, ECO:0000269|PubMed:19237565, ECO:0000269|PubMed:9106657}.
細胞内位置: Cytoplasm. Nucleus. Membrane. Note=Cytoplasmic when non-complexed. Forms a cyclin D-CDK4 complex in the cytoplasm as cells progress through G(1) phase. The complex accumulates on the nuclear membrane and enters the nucleus on transition from G(1) to S phase. Also present in nucleoli and heterochromatin lumps. Colocalizes with RB1 after release into the nucleus.
翻訳後: Phosphorylation at Thr-172 is required for enzymatic activity. Phosphorylated, in vitro, at this site by CCNH-CDK7, but, in vivo, appears to be phosphorylated by a proline-directed kinase. In the cyclin D-CDK4-CDKN1B complex, this phosphorylation and consequent CDK4 enzyme activity, is dependent on the tyrosine phosphorylation state of CDKN1B. Thus, in proliferating cells, CDK4 within the complex is phosphorylated on Thr-172 in the T-loop. In resting cells, phosphorylation on Thr-172 is prevented by the non-tyrosine-phosphorylated form of CDKN1B. {ECO:0000269|PubMed:16782892, ECO:0000269|PubMed:19075005, ECO:0000269|PubMed:19237555, ECO:0000269|PubMed:19237565, ECO:0000269|PubMed:19487459}.
疾患関連性: DISEASE: Melanoma, cutaneous malignant 3 (CMM3) [MIM:609048]: A malignant neoplasm of melanocytes, arising de novo or from a pre-existing benign nevus, which occurs most often in the skin but also may involve other sites. {ECO:0000269|PubMed:7652577, ECO:0000269|PubMed:8528263, ECO:0000269|PubMed:9311594, ECO:0000269|PubMed:9425228}. Note=Disease susceptibility is associated with variations affecting the gene represented in this entry.
シーケンスの類似性: Belongs to the protein kinase superfamily. CMGC Ser/Thr protein kinase family. CDC2/CDKX subfamily. {ECO:0000305}.; Contains 1 protein kinase domain. {ECO:0000255|PROSITE-ProRule:PRU00159}.
General information above from UniProt

CDK4 is a member of the Ser/Thr protein kinase family. It is highly similar to the gene products of S. cerevisiae cdc28 and S. pombe cdc2. It is a catalytic subunit of the protein kinase complex that is important for cell cycle G1 phase progression. The activity of CDK4 is restricted to the G1-S phase, which is controlled by the regulatory subunits D-type cyclins and CDK inhibitor p16(INK4a). CDK4 was shown to be responsible for the phosphorylation of retinoblastoma gene product. CDK4 is the ser/Thr-kinase component of cyclin D-CDK4 (DC) complexes that phosphorylate and inhibit members of the retinoblastoma (RB) protein family including RB1 and regulate the cell-cycle during G(1)/S transition. Phosphorylation of RB1 allows dissociation of the transcription factor E2F from the RB/E2F complexes and the subsequent transcription of E2F target genes which are responsible for the progression through the G(1) phase. Hypophosphorylates RB1 in early G(1) phase. Cyclin D-CDK4 complexes are major integrators of various mitogenenic and antimitogenic signals. CDK4 has been shown to be mutated in some types of cancer, whilst a chromosomal rearrangement can lead to Cdk6 overexpression in lymphoma, leukemia and melanoma.

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CDK4 代替名

CMM3,PSK-J3, [homo-sapiens]
CDK4,CMM3,MGC14458,PSK-J3, [human]
Cdk4,Crk3, [mouse]
Crk3, [mus-musculus]

CDK4 関連研究

  • Stepanova L, et al. (1996) Mammalian p50Cdc37 is a protein kinase-targeting subunit of Hsp90 that binds and stabilizes Cdk4. Genes Dev. 10(12):1491-502.
  • Lamphere L, et al. (1997) Interaction between Cdc37 and Cdk4 in human cells. Oncogene. 14(16): 1999-2004.
  • Dai K, et al. (1996) Physical interaction of mammalian CDC37 with CDK4. J Biol Chem. 271(36): 22030-4.
  • Sugimoto M, et al. (1999) Regulation of CDK4 activity by a novel CDK4-binding protein, p34SEI-1. Genes Dev. 13(22):3027-33.
  • 注意:すべての製品は、"研究目的のみに使用するものであり、診断または治療目的に使用するものではありません"