Flow cytometric analysis of U-937 cells with RB1 (phospho S807/S811) monoclonal antibody, clone D9 (APC) (Cat # MAB23426). Untreated and unstained as negative control (blue) or untreated and stained (green) or treated with lambda phosphatase and stained (red).
The protein encoded by this gene is a negative regulator of the cell cycle and was the first tumor suppressor gene found. The encoded protein also stabilizes constitutive heterochromatin to maintain the overall chromatin structure. The active, hypophosphorylated form of the protein binds transcription factor E2F1. Defects in this gene are a cause of childhood cancer retinoblastoma (RB), bladder cancer, and osteogenic sarcoma. [provided by RefSeq
Other Designations:
OTTHUMP00000018397,retinoblastoma suspectibility protein,retinoblastoma-associated protein