产品详情
简单介绍：
Anti-Rb (T774) Antibody
详情介绍：
Overview
| Name: | Anti-Rb (T774) Antibody See all Rb primary antibodies
|
| Description: | Rabbit polyclonal antibody to Rb (T774) |
| Specificity: | Rb (T774) pAb detects endogenous levels of Rb protein. |
| Applications: | WB, IHC, IF |
| Reactivity: | Human, Mouse, Rat |
| Immunogen: | Synthetic peptide, corresponding to amino acids 741-790 of Human Rb. |
| Host: | Rabbit |
| Clonality: | Polyclonal |
| Conjugate: | Unconjugated |
| Molecular Weight: | ~ 106 kDa |
| Purity: | The antibody was affinity-purified from rabbit antiserum by affinity-chromatography using epitope-specific immunogen and the purity is > 95% (by SDS-PAGE). |
| Product Form: | 1 mg/ml in Phosphate buffered saline (PBS) with 0.05% sodium azide, approx. pH 7.2. |
Target
| 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, KMT5B and KMT5C, 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. |
| Tissue Specificity: | Expressed in the retina. |
| Involvement in Disease: | Childhood cancer retinoblastoma: Congenital malignant tumor that arises from the nuclear layers of the retina. It occurs in about 1:20'000 live births and represents about 2% of childhood malignancies. It is bilateral in about 30% of cases. Although most RB appear sporadically, about 20% are transmitted as an autosomal dominant trait with incomplete penetrance. The diagnosis is usually made before the age of 2 years when strabismus or a gray to yellow reflex from pupil ('cat eye') is investigated. Bladder cancer: A malignancy originating in tissues of the urinary bladder. It often presents with multiple tumors appearing at different times and at different sites in the bladder. Most bladder cancers are transitional cell carcinomas that begin in cells that normally make up the inner lining of the bladder. Other types of bladder cancer include squamous cell carcinoma (cancer that begins in thin, flat cells) and adenocarcinoma (cancer that begins in cells that make and release mucus and other fluids). Bladder cancer is a complex disorder with both genetic and environmental influences. Osteogenic sarcoma: A sarcoma originating in bone-forming cells, affecting the ends of long bones. |
| Sequence Similarities: | Belongs to the retinoblastoma protein (RB) family. |
| Post-Translational Modification: | Phosphorylated by CDK6 and CDK4, and subsequently by CDK2 at Ser-567 in G1, thereby releasing E2F1 which is then able to activate cell growth. Dephosphorylated at the late M phase. SV40 large T antigen, HPV E7 and adenovirus E1A bind to the underphosphorylated, active form of pRb. Phosphorylation at Thr-821 and Thr-826 promotes interaction between the C-terminal domain C and the Pocket domain, and thereby inhibits interactions with heterodimeric E2F/DP transcription factor complexes. Dephosphorylated at Ser-795 by calcineruin upon calcium stimulation. CDK3/cyclin-C-mediated phosphorylation at Ser-807 and Ser-811 is required for G0-G1 transition. Phosphorylated by CDK1 and CDK2 upon TGFB1-mediated apoptosis (By similarity). |
| Cellular Location: | Nucleus. |
| Database Links: |
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| Synonyms: | |
| Information: | Target information shown above is from the UniProt Consortium. |
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