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Human CDK4 / CMM3 Protein (GST Tag)

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Human CDK4 Protein Product Information
Synonym:CMM3, MGC14458, PSK-J3, CDK4
Protein Construction:A DNA sequence encoding the human CDK4 (NP_000066.1) (Met 1-Glu 303) was fused with the GST tag at the N-terminus.
Expressed Host:Baculovirus-Insect Cells
Shipping:In general, recombinant proteins are provided as lyophilized powder which are shipped at ambient temperature.
Bulk packages of recombinant proteins are provided as frozen liquid. They are shipped out with blue ice unless customers require otherwise.
Human CDK4 Protein QC Testing
Purity:> 90 % as determined by SDS-PAGE
Bio-Activity:No Kinase Activity
Endotoxin:< 1.0 EU per μg of the protein as determined by the LAL method
Stability:Samples are stable for up to twelve months from date of receipt at -70℃
Predicted N Terminal:Met
Molecule Mass:The recombinant human CDK4/GST chimera consists of 528 amino acids and predicts a molecular mass of 60 kDa. It migrates as an approximately 55 kDa band in SDS-PAGE under reducing conditions.
Formulation:Lyophilized from sterile 50mM Tris, 100mM NaCl, 10% gly, 0.5mM PMSF, pH 8.0
1. Normally 5 % - 8 % trehalose and mannitol are added as protectants before lyophilization. Specific concentrations are included in the hardcopy of COA.
2. Please contact us for any concerns or special requirements.
Human CDK4 Protein Usage Guide
Storage:Store it under sterile conditions at -20℃ to -80℃. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.
Reconstitution:A hardcopy of COA with reconstitution instruction is sent along with the products. Please refer to it for detailed information.
Human CDK4 Protein SDS-PAGE
Human CDK4 / CMM3 Protein (GST Tag) SDS-PAGE
Human CDK4 / CMM3 Protein (GST Tag) SDS-PAGE
Other CDK4 Recombinant Protein Products
CDK4 Background

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.

Human CDK4 References
  • 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.
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    Catalog: 10732-H09B-50
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