Exon 17 tumor GOS561 substitution mutation causes premature stop, GOS563 exon 17 substitution mutation causes premature stop, OSRC, Osteosarcoma, p105-Rb, P105RB, PP105, pp110, PPP1R130, pRb, Prepro retinoblastoma associated protein, Protein phosphatase 1 regulatory subunit 130, Rb, RB transcriptional corepressor 1, RB_HUMAN, RB1, RB1 gene, Retinoblastoma 1, Retinoblastoma suspectibility protein, Retinoblastoma-associated protein

The Rb protein regulates differentiation, apoptosis, and cell cycle control by coordinating the cell cycle at G1-S with transcriptional machinery. During G1, cyclin D-dependent kinase-mediated phosphorylation of Rb at Ser-795 marks the conversion of Rb from a transcriptionally repressive, hypophosphorylated state to an inactive, phosphorylated state, which may be sustained through mitosis by differential phosphorylation of up to 16 putative serine or threonine residues. Pediatric cancer retinoblastoma and the formation of other human tumors can be attributed to mutations in the retinoblastoma tumor suppressor gene(Rb).