Recombinant Rabbit monoclonal primary
Recombinant Cdk4 Monoclonal Antibody (ET1612-1)
Hela cell lysate, MCF-7 cell lysate, Hela, MCF-7, NIH/3T3, human breast carcinoma tissue, human stomach carcinoma tissue.
Store at +4C after thawing. Aliquot store at -20C or -80C. Avoid repeated freeze / thaw cycles.
1*TBS (pH7.4), 0.05% BSA, 40% Glycerol. Preservative: 0.05% Sodium Azide.
Protein A affinity purified.
Cdk 4 antibody; cdk4 antibody; CDK4 protein antibody; CDK4_HUMAN antibody; Cell division kinase 4 antibody; Cell division protein kinase 4 antibody; CMM 3 antibody; CMM3 antibody; Crk3 antibody; Cyclin dependent kinase 4 antibody; Cyclin-dependent kinase 4 antibody; Melanoma cutaneous malignant 3 antibody; MGC14458 antibody; p34 cdk4 antibody; PSK J3 antibody; PSK-J3 antibody
Belongs to the protein kinase superfamily. CMGC Ser/Thr protein kinase family. CDC2/CDKX subfamily.
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.
Nucleus, Nucleus membrane, Cytoplasm.
Cell cycle progression is controlled in part by a family of cyclin proteins and cyclin dependent kinases (Cdks). Cdk proteins work in concert with the cyclins to phosphorylate key substrates involved in each phase of cell cycle progression . Another family of proteins, Cdk inhibitors, also plays a role in regulating the cell cycle by binding to cyclin-Cdk complexes and modulating their activity. Several Cdk proteins have been identified, including Cdk2-Cdk8, PCTAIRE-1-PCTAIRE-3, PITALRE and PITSLRE. Cdk4, in complex with D-type cyclins, is thought to regulate cell growth during the G1 phase of the cell cycle. This association with a D-type cyclin upregulates Cdk4 activity, whereas binding to the Cdk inhibitor p16 downregulates Cdk4 activity. Activation of the Cdk4-cyclin complexes requires phosphorylation on a single threonyl residue of Cdk4, catalyzed by a Cdk-activating protein (CAK).