BD, 610241, Purified Mouse Anti-p27[Kip1] 57/Kip1/p27

Kip1 is a cyclin-dependent kinase (cdk) inhibitor that was identified as a result of its role in TGFβ-induced G1 phase arrest and cell-cell contact. In vitro , p27 [Kip1] binds tightly to Cyclin D-Cdk4, Cyclin E-Cdk2, and Cyclin A-Cdk2 complexes and inhibits their activity. In normal cells, Kip1 is sequestered and its activity gradually decreases as cells reach S phase. The addition of TGF-β in early G1 blocks this decline in activity, by preventing the sequestration of Kip1. TGF-β also reduces the levels of Cdk4. Kip1 preferentially binds Cyclin D-Cdk4, but the lower levels of Cdk4 in TGF-β treated cells allow Kip1 to be available for binding to Cyclin E-Cdk2 and Cyclin A-Cdk2. Kip1 is structurally related to Cip1/WAF1, having a similar 60 amino acid sequence in the N-terminal region. A 52 amino acid Kip1 peptide (residues 28-79) from this region is sufficient to inhibit cdk activity in vitro.

Store undiluted at -20°C. The monoclonal antibody was purified from tissue culture supernatant or ascites by affinity chromatography.
1. Since applications vary, each investigator should titrate the reagent to obtain optimal results.
2. Please refer to www.bdbiosciences.com/us/s/resources for technical protocols.
3. Source of all serum proteins is from USDA inspected abattoirs located in the United States.
4. Caution: Sodium azide yields highly toxic hydrazoic acid under acidic conditions. Dilute azide compounds in running water before discarding to avoid accumulation of potentially explosive deposits in plumbing.