Anti-Retinoblastoma (Rb), clone 3A38

The retinoblastoma tumor suppressor protein, Rb, regulates cell proliferation by controlling progression through the restriction point within the G1-phase of the cell cycle (1). Rb has three functionally distinct binding domains and interacts with critical regulatory proteins including the E2F family of transcription factors, c-Abl tyrosine kinase, and proteins with a conserved LXCXE motif (2-4). Cell cycle-dependent phosphorylation by cdk's inhibits Rb target binding, thus allowing cell cycle progression (5). Rb inactivation and subsequent cell cycle progression likely requires first phosphorylation by cyclin D-cdk4/6 followed by cyclin E-cdk2 phosphorylation (6). Specificity of different cdk/cyclin complexes has been observed in vitro (6-8) and cyclin D1 is required for Ser780 phosphorylation in vivo (9). Applications: Suitable for use in Western Blot, Immunoprecipitation, Immunohistochemistry, Immunocytochemistry, Immunofluorescence and Flow Cytometry. Other applications not tested. Recommended Dilution: Western Blot: 1:2000, incubate membrane with diluted antibody in 5% nonfat dry milk, 1X TBS, 0.1% Tween-20 at 4°C with gentle shaking, overnight., Immunoprecipitation: 1:100, Immunohistochemistry (Paraffin): 1:100, Immunocytochemistry (for IF): 1:200, Flow Cytometry: 1:400, Optimal dilutions to be determined by the researcher. Storage and Stability: May be stored at 4°C for short-term only. For long-term storage, store at -20°C. Aliquots are stable for at least 12 months at -20°C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.