CST, 2404S, Phospho-HSP27 (Ser15) Antibody

Polyclonal Antibody for studying HSP27 (Ser15) phosphate. Validated for Western Blotting. Available in 2 sizes. Highly specific and rigorously validated in-house, Phospho-HSP27 (Ser15) Antibody (CST #2404) 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 Phospho-HSP27 (Ser15) Antibody detects endogenous levels of HSP27 only when phosphorylated at serine 15. Species Reactivity: Human, Monkey Source / Purification Polyclonal antibodies are produced by immunizing animals with a synthetic phosphopeptide corresponding to residues surrounding Ser15 of human HSP27. Antibodies are purified by protein A and peptide affinity chromatography. Background Heat shock protein (HSP) 27 is one of the small HSPs that are constitutively expressed at different levels in various cell types and tissues. Like other small HSPs, HSP27 is regulated at both the transcriptional and posttranslational levels (1). In response to stress, the HSP27 expression increases several-fold to confer cellular resistance to the adverse environmental change. HSP27 is phosphorylated at Ser15, Ser78, and Ser82 by MAPKAPK-2 as a result of the activation of the p38 MAP kinase pathway (2,3). Phosphorylation of HSP27 causes a change in its tertiary structure, which shifts from large homotypic multimers to dimers and monomers (4). It has been shown that phosphorylation and increased concentration of HSP27 modulates actin polymerization and reorganization (5,6). Alternate Names 28 kDa heat shock protein; CMT2F; DKFZp586P1322; epididymis secretory protein Li 102; Estrogen-regulated 24 kDa protein; Heat shock 27 kDa protein; heat shock 27kD protein 1; heat shock 27kDa protein 1; Heat shock protein beta-1; heat shock protein family B (small) member 1; HEL-S-102; HMN2B; HS.76067; HSP 27; Hsp25; HSP27; HSP28; HSPB1; SRP27; Stress-responsive protein 27 Specification REACTIVITY: H Mk SENSITIVITY: Endogenous MW (kDa): 27 SOURCE: Rabbit