CST, 4164S, PIAS3 Antibody

Polyclonal Antibody for studying PIAS3. Validated for Western Blotting. Highly specific and rigorously validated in-house, PIAS3 Antibody (CST #4164) is ready to ship. Product Usage Information Western Blotting: 1:1000 Storage Supplied 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. Protocol Available protocols: Western Blotting Specificity / Sensitivity PIAS3 Antibody detects endogenous levels of total PIAS3 protein. Species Reactivity: Human, Mouse, Rat, Monkey Source / Purification Polyclonal antibodies are produced by immunizing animals with a synthetic peptide corresponding to Thr585 of human PIAS3. Antibodies were purified by protein A and peptide affinity chromatography. Background The protein inhibitor of activated Stat (PIAS) proteins, which include PIAS1, PIAS3, PIASx, and PIASy, were originally characterized based on their interaction with the Stat family of transcription factors (1,2). PIAS1, PIAS3, and PIASx interact with and repress Stat1, Stat3, and Stat4, respectively (1-3). Deletion of PIAS1 leads to inhibition of interferon-inducible genes and increased protection against infection (4). The PIAS family contains a conserved RING domain that has been linked to a function as a small ubiquitin-related modifier (SUMO) ligase, coupling the SUMO conjugating enzyme Ubc9 with its substrate proteins (5,6). Numerous studies have now shown that PIAS family members can regulate the activity of transcription factors through distinct mechanisms, including NF-κB (7,8), c-Jun, p53 (5,9), Oct-4 (10), and Smads (11,12). The activity of PIAS1 is regulated by both phosphorylation and arginine methylation. Inflammatory stimuli can induce IKK-mediated phosphorylation of PIAS1 at Ser90, which is required for its activity (13). In addition, PRMT1 induces arginine methylation of PIAS1 at Arg303 following interferon treatment and is associated with its repressive activity on Stat1 (14). Alternate Names E3 SUMO-protein ligase PIAS3; E3 SUMO-protein transferase PIAS3; FLJ14651; PIAS3; protein inhibitor of activated STAT 3; Protein inhibitor of activated STAT protein 3; protein inhibitor of activated STAT, 3; zinc finger, MIZ-type containing 5; ZMIZ5 Specification REACTIVITY: H M R Mk SENSITIVITY: Endogenous MW (kDa): 65-75 SOURCE: Rabbit