Cyclin-dependent kinase4 (CDK4), human, recombinant

Organism: Homo sapiens (Human). Source: Baculovirus. Expression Region: 2-303aa. Protein Length: Full Length of Mature Protein. Tag Info: N-terminal 6xHis-tagged. Target Protein Sequence: ATSRYEPVAE IGVGAYGTVY KARDPHSGHF VALKSVRVPN GGGGGGGLPI STVREVALLR RLEAFEHPNV VRLMDVCATS RTDREIKVTL VFEHVDQDLR TYLDKAPPPG LPAETIKDLM RQFLRGLDFL HANCIVHRDL KPENILVTSG GTVKLADFGL ARIYSYQMAL TPVVVTLWYR APEVLLQSTY ATPVDMWSVG CIFAEMFRRK PLFCGNSEAD QLGKIFDLIG LPPEDDWPRD VSLPRGAFPP RGPRPVQSVV PEMEESGAQL LLEMLTFNPH KRISAFRALQ HSYLHKDEGN PE. Purity: Greater than 90% as determined by SDS-PAGE. Endotoxin: Not test. Biological Activity: n/a. Form: Liquid or Lyophilized powder. Buffer: If the delivery form is liquid, the default storage buffer is Tris/PBS-based buffer, 5%-50% glycerol. If the delivery form is lyophilized powder, the buffer before lyophilization is Tris/PBS-based buffer, 6% Trehalose, pH 8.0. Reconstitution: We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20 °C/-80 °C. Our default final concentration of glycerol is 50%. Customers could use it as reference. Storage: The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself. Generally, the shelf life of liquid form is 6 months at -20 °C/-80 °C. The shelf life of lyophilized form is 12 months at -20 °C/-80 °C. Notes: Repeated freezing and thawing is not recommended. Store working aliquots at 4 °C for up to one week. Relevance: n/a. Reference: "The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC)."The MGC Project Team Gerhard D.S., Wagner L., Feingold E.A., Shenmen C.M., Grouse L.H., Schuler G., Klein S.L., Old S., Rasooly R., Good P., Guyer M., Peck A.M., Derge J.G., Lipman D., Collins F.S., Jang W., Sherry S., Feolo M. Malek J.Genome Res. 14:2121-2127(2004). Function: 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. Also phosphorylates SMAD3 in a cell-cycle-dependent manner and represses its transcriptional activity. Component of the ternary complex, cyclin D/CDK4/CDKN1B, required for nuclear translocation and activity of the cyclin D-CDK4 complex.