p16 Background Information The progression of cells through the cell cycle is regulated by a family of protein kinases known as cyclin-dependent kinases (Cdks). The sequential activation of individual members of this family and their consequent phosphorylation of critical substrates promotes orderly progression through the cell cycle. The cyclins function as differentially expressed positive regulators of Cdks. Negative regulators of the cycle include the p53-inducible protein p21 (also designated WAF1 or Cip1), Kip1 p27 and p16. The complexes formed by Cdk4 and the D-type cyclins have been strongly implicated in the control of cell proliferation during the G1 phase. It has been shown that p16 binds to Cdk4 and inhibits the catalytic activity of the Cdk4/cyclin D complex. Moreover, the gene encoding p16 exhibits a high frequency of homozygous deletions and point mutations in established human tumor cell lines.
p16 (H-156) Product Citations
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p16 (H-156)
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Western blot analysis of p16 (C-20): sc-468 (A,B) and p16 (H-156): sc-759 (C,D) for reactivity with human recombinant p16 (B,D) and control (A,C) fusion proteins.
p16 (H-156): sc-759. Immunofluorescence staining of methanol-fixed HeLa cells showing cytoplasmic localization.
Western blot analysis of p16 expression in Saos-2 (E) and HeLa (F) cell lysates.
