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Phospho-Rb(S811) Antibody

Catalog # Availability Size / Price Inquiry
APR05151G 100 μl / $495

Phospho-Rb(S811) Antibody

Brand

Leading Biology

Catalog Number

APR05151G

Product Type

Polyclonal Antibodies

Field of Research

Product Overview

We constantly strive to ensure we provide our customers with the best antibodies. As a result of this work we offer this antibody in purified format. We are in the process of updating our datasheets. If you have any questions regarding this update, please feel free to contact our technical support team. This product is a high quality Phospho-Rb(S811) Antibody.

Molecular Weight

106159 Da

Cellular Localization

Antigen Cellular Localization: Nucleus.

Host

Rabbit

Species Reactivity

Human

Target

This Rb Antibody is generated from rabbits immunized with a KLH conjugated synthetic phosphopeptide corresponding to amino acid residues surrounding S811 of human Rb.

Isotype

Rabbit Ig

GeneID

UniProt ID

Function

Key regulator of entry into cell division that acts as a tumor suppressor. Promotes G0-G1 transition when phosphorylated by CDK3/cyclin-C. 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. Mediates transcriptional repression by SMARCA4/BRG1 by recruiting a histone deacetylase (HDAC) complex to the c-FOS promoter. In resting neurons, transcription of the c-FOS promoter is inhibited by BRG1-dependent recruitment of a phospho-RB1-HDAC1 repressor complex. Upon calcium influx, RB1 is dephosphorylated by calcineurin, which leads to release of the repressor complex (By similarity). 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.

Summary

Retinoblastoma (RB) is an embryonic malignant neoplasm of retinal origin. It almost always presents in early childhood and is often bilateral. Spontaneous regression occurs in some cases.

Storage & Stability

Store at +4°C short term. For long-term storage, aliquot and store at -20°C or below. Stable for 12 months at -20°C. Avoid repeated freeze-thaw cycles.

Applications

DB, IHC-P, IF, E

Dilution

DB~~1:500 IHC-P~~1:50~100 IF~~1:10~50

Images

Dot blot analysis of anti-hRb-S811 Phospho-specific Pab (Cat. APR05151G) on nitrocellulose membrane. 50ng of nonphospho-peptide or phospho-peptide were adsorbed on their respective dots. Antibody working concentration was 0.5ug per ml.

Formalin-fixed and paraffin-embedded human cancer tissue reacted with the primary antibody, which was peroxidase-conjugated to the secondary antibody, followed by AEC staining. This data demonstrates the use of this antibody for immunohistochemistry; clinical relevance has not been evaluated. BC = breast carcinoma; HC = hepatocarcinoma.

Confocal immunofluorescent analysis of Phospho-Rb-S811 Antibody( APR05151G) with HepG2 cell followed by Alexa Fluor 488-conjugated goat anti-rabbit lgG (green).DAPI was used to stain the cell nuclear (blue).

Specification

Quantity

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