{"product_id":"cst-12187s","title":"CST,  12187S, RNF40 (D2R2O) Rabbit Monoclonal Antibody","description":"Monoclonal Antibody for studying RNF40. Validated for Western Blotting,Immunoprecipitation. Available in 2 sizes. Highly specific and rigorously validated in-house, RNF40 (D2R2O) Rabbit Monoclonal Antibody (CST #12187) is ready to ship.\n\n\u003cb\u003eProduct Usage Information\u003c\/b\u003e\nWestern Blotting: 1:1000\nImmunoprecipitation: 1:100\n\u003cb\u003eStorage\u003c\/b\u003e\nSupplied in 10 mM sodium HEPES (pH 7.5), 150 mM NaCl, 100 µg\/ml BSA, 50% glycerol and less than 0.02% sodium azide. Store at -20°C. Do not aliquot the antibody.\n\u003cb\u003eProtocol\u003c\/b\u003e\nAvailable protocols: Western Blotting, Immunoprecipitation\n\u003cb\u003eSpecificity \/ Sensitivity\u003c\/b\u003e\nRNF40 (D2R2O) Rabbit Monoclonal Antibody recognizes endogenous levels of total RNF40 protein. This antibody does not cross-react with RNF20\/BRE1A.\nSpecies Reactivity: Human\n\u003cb\u003eSource \/ Purification\u003c\/b\u003e\nMonoclonal antibody is produced by immunizing animals with a synthetic peptide corresponding to residues surrounding Asp537 of human RNF40 protein.\n\u003cb\u003eBackground\u003c\/b\u003e\nIn mammalian cells, the significance of histone H2B ubiquitination in chromatin epigenetics came from the identification of the budding yeast protein Bre1 (1,2). Together with the ubiquitin-conjugating enzyme Rad6, Bre1 serves as the E3 ligase in the monoubiquitination of the yeast histone H2B within transcribed regions of chromatin (1-3). Subsequently, the mammalian orthologs of yeast Bre1, RNF20 and RNF40, were identified (4,5). These two proteins form a tight heterodimer that acts as the major E3 ligase responsible for histone H2B monoubiquitination at Lys120 in mammalian cells, a modification linked to RNA Pol II-dependent transcription elongation in undamaged cells. Researchers have shown that DNA double-strand breaks (DSBs) are also capable of inducing monoubiquitination of H2B. This process depends upon the recruitment to DSB sites, as well as ATM-dependent phosphorylation of the RNF20-RNF40 heterodimer, thus highlighting a role for this E3 ligase in DSB repair pathways (6). Indeed, investigators have shown that loss of RNF20-RNF40 function promotes replication stress and chromosomal instability, which may constitute an early step in malignant transformation that precedes cell invasion (7).\n\u003cb\u003eAlternate Names\u003c\/b\u003e\n95 kDa retinoblastoma protein binding protein; 95 kDa retinoblastoma-associated protein; BRE1 E3 ubiquitin ligase homolog B; BRE1-B; BRE1B; DKFZp686K191; E3 ubiquitin-protein ligase BRE1B; KIAA0661; MGC13051; Rb-associated protein; RBP95; RING finger protein 40; ring finger protein 40, E3 ubiquitin protein ligase; RING-type E3 ubiquitin transferase BRE1B; RNF40; STARING\n\n\u003cb\u003eSpecification\u003c\/b\u003e\n\nREACTIVITY: H\nSENSITIVITY: Endogenous\nMW (kDa): 130\nSource\/Isotype: Rabbit IgG","brand":"CST","offers":[{"title":"Default Title","offer_id":46797567492265,"sku":"12187S","price":0.99,"currency_code":"USD","in_stock":true}],"url":"https:\/\/iright.com\/products\/cst-12187s","provider":"Iright","version":"1.0","type":"link"}