RB1 (Ab-807) Antibody

Polyclonal Antibody

RB1

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

Peptide sequence around aa.805ca.809 (Y-I-S-P-L) derived from Human Rb.

Rb operates in the midst of the cell cycle clock apparatus. Its main role is to act as a signal transducer connecting the cell cycle clock with the transcriptional machinery (Ref.1). It plays an important role in the Rb/ E2F pathway in cell proliferation, cell fate determination, and cancer (Ref.2). Cellular senescence is a stable form of cell cycle arrest that limits proliferation of damaged cells and act as a natural barrier to cancer progression. A distinct heterochromatic structure that accumulates in senescent human fibroblasts, designated as SAHF (Senescence-Associated Heterochromatic Foci). SAHF formation coincides with recruitment of heterochromatin proteins and the Rb protein to E2F-responsive promoters and is associated with the stable repression of E2F target genes. Both SAHF formation and the silencing of E2F target genes depended on the integrity of the Rb pathway and do not occur in reversibly arrested cells (Ref.3). Rb activates transcription of the c-Jun gene through the SP1-binding site within the c-Jun promoter

Roesch A, et al. (2005) Mod Pathol. 18(4): 565-572.
Chadee DN, et al. (2004) Nat Cell Biol. 6(8): 770-776.
Knudsen ES, et al. (1997) Mol Cell Biol. 17(10): 5771-5783.
Knudsen ES, et al. (1996) J Biol Chem. 271(14): 8313-8320.

Antibodies were produced by immunizing rabbits with synthetic peptide and KLH conjugates. Antibodies were purified by affinity-chromatography using epitope-specific peptide.

Cell Biology

Peptide sequence around aa.805~809 (Y-I-S-P-L) derived from Human Rb.