{"product_id":"cst-9177s","title":"CST,  9177S, Phospho-Stat1 (Ser727) Antibody","description":"Polyclonal Antibody for studying Stat1 (Ser727) phosphate. Validated for Western Blotting,Immunofluorescence (Immunocytochemistry),Chromatin IP. Highly specific and rigorously validated in-house, Phospho-Stat1 (Ser727) Antibody (CST #9177) is ready to ship.\n\n\u003cb\u003eProduct Usage Information\u003c\/b\u003e\nFor optimal ChIP results, use 10 μl of antibody and 10 μg of chromatin (approximately 4 x 10 6 cells) per IP. This antibody has been validated using SimpleChIP ® Enzymatic Chromatin IP Kits.\nWestern Blotting: 1:1000\nImmunofluorescence (Immunocytochemistry): 1:100\nChromatin IP: 1:50\n\u003cb\u003eStorage\u003c\/b\u003e\nSupplied in 10 mM sodium HEPES (pH 7.5), 150 mM NaCl, 100 µg\/ml BSA and 50% glycerol. Store at -20°C. Do not aliquot the antibody.\n\u003cb\u003eProtocol\u003c\/b\u003e\nAvailable protocols: Western Blotting, Immunofluorescence (Immunocytochemistry), Chromatin IP\n\u003cb\u003eSpecificity \/ Sensitivity\u003c\/b\u003e\nPhospho-Stat1 (Ser727) Antibody detects endogenous levels of Stat1α only when phosphorylated at Ser727. This site is deleted in Stat1β. This antibody does not significantly cross-react with the corresponding phosphorylated residues of other Stat proteins.\nSpecies Reactivity: Human, Mouse, Rat, Monkey\n\u003cb\u003eSource \/ Purification\u003c\/b\u003e\nPolyclonal antibodies are produced by immunizing animals with a synthetic phosphopeptide corresponding to residues surrounding Ser727 of human Stat1. Antibodies are purified by protein A and peptide affinity chromatography.\n\u003cb\u003eBackground\u003c\/b\u003e\nThe Stat1 transcription factor is activated in response to a large number of ligands (1) and is essential for responsiveness to IFN-α and IFN-γ (2,3). Phosphorylation of Stat1 at Tyr701 induces Stat1 dimerization, nuclear translocation, and DNA binding (4). Stat1 protein exists as a pair of isoforms, Stat1α (91 kDa) and the splice variant Stat1β (84 kDa). In most cells, both isoforms are activated by IFN-α, but only Stat1α is activated by IFN-γ. The inappropriate activation of Stat1 occurs in many tumors (5). In addition to tyrosine phosphorylation, Stat1 is also phosphorylated at Ser727 through a p38 mitogen-activated protein kinase (MAPK)-dependent pathway in response to IFN-α and other cellular stresses (6). Serine phosphorylation may be required for the maximal induction of Stat1-mediated gene activation.\n\u003cb\u003eAlternate Names\u003c\/b\u003e\nCANDF7; DKFZp686B04100; IMD31A; IMD31B; IMD31C; ISGF-3; signal transducer and activator of transcription 1; Signal transducer and activator of transcription 1-alpha\/beta; signal transducer and activator of transcription 1, 91kD; signal transducer and activator of transcription 1, 91kDa; signal transducer and activator of transcription-1; STAT1; STAT91; Transcription factor ISGF-3 components p91\/p84\n\n\u003cb\u003eSpecification\u003c\/b\u003e\n\nREACTIVITY: H M R Mk\nSENSITIVITY: Endogenous\nMW (kDa): 91\nSOURCE: Rabbit","brand":"CST","offers":[{"title":"Default Title","offer_id":46800009363625,"sku":"9177S","price":0.99,"currency_code":"USD","in_stock":true}],"url":"https:\/\/iright.com\/products\/cst-9177s","provider":"Iright","version":"1.0","type":"link"}