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- Email: info@nsjbio.com
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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 (By similarity).
Titration of the Cdk4 antibody may be required due to differences in protocols and secondary/substrate sensitivity.
A portion of amino acids 272-303 from the rat protein was used as the immunogen for this Cdk4 antibody.
Aliquot the Cdk4 antibody and store frozen at -20oC or colder. Avoid repeated freeze-thaw cycles.
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