Rb(Ab-795) Antibody

Description

Product Name Rb(Ab-795) Antibody
Host Species Rabbit
Clonality Polyclonal
Purification Antibodies were produced by immunizing rabbits with synthetic peptide and KLH conjugates. Antibodies were purified by affinity-chromatography using epitope-specific peptide.
Applications WB
Species Reactivity Hu
Specificity The antibody detects endogenous level of total Rb protein.
Immunogen Type Peptide-KLH
Immunogen Description Peptide sequence around aa.793~797 (P-S-S-P-L) derived from Human Rb.
Target Name Rb
Alternative Names P105-RB; PP105; PP110; RB-1; RB1
Accession No. Swiss-Prot: P06400
NCBI Protein: NP_000312.2
Concentration 1.0mg/ml
Formulation Supplied at 1.0mg/mL in phosphate buffered saline (without Mg2+ and Ca2+), pH 7.4, 150mM NaCl, 0.02% sodium azide and 50% glycerol.
Storage Store at -20°C for long term preservation (recommended). Store at 4°C for short term use.

Application Details

Predicted MW: 110kd
Western blotting: 1:500~1:1000

Images

Western blot analysis of extracts from MOLT cells using Rb(Ab-795) Antibody #AB21108 and the same antibody preincubated with blocking peptide.

Background

Key regulator of entry into cell division that acts as a tumor suppressor. Acts as a transcription repressor of E2F1 target genes. The underphosphorylated, active form of RB1 interacts with E2F1 and represses its transcription activity, leading to cell cycle arrest. Directly involved in heterochromatin formation by maintaining overall chromatin structure and, in particular, that of constitutive heterochromatin by stabilizing histone methylation. Recruits and targets histone methyltransferases SUV39H1, SUV420H1 and SUV420H2, leading to epigenetic transcriptional repression. Controls histone H4 'Lys-20' trimethylation. Inhibits the intrinsic kinase activity of TAF1. In case of viral infections, interactions with SV40 large T antigen, HPV E7 protein or adenovirus E1A protein induce the disassembly of RB1-E2F1 complex thereby disrupting RB1's activity.

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.

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