CST, 8728T, USP8 Antibody

Polyclonal Antibody for studying USP8. Validated for Western Blotting,Immunoprecipitation. Available in 2 sizes. Highly specific and rigorously validated in-house, USP8 Antibody (CST #8728) is ready to ship. Product Usage Information Western Blotting: 1:1000 Immunoprecipitation: 1:50 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, Immunoprecipitation Specificity / Sensitivity USP8 Antibody recognizes endogenous levels of total USP8 protein. Species Reactivity: Human, Monkey Source / Purification Polyclonal antibodies are produced by immunizing animals with a synthetic peptide corresponding to residues surrounding Pro320 of human USP8 protein. Antibodies are purified by protein A and peptide affinity chromatography. Background Ubiquitinating enzymes (UBEs) catalyze protein ubiquitination, a reversible process countered by deubiquitinating enzyme (DUB) action (1,2). Five DUB subfamilies are recognized, including the USP, UCH, OTU, MJD, and JAMM enzymes. The deubiquitinating enzyme ubiquitin-specific protease 8 (USP8/UBPy) is a cysteine protease belonging to the USP/UBP subfamily. Research studies have shown that USP8 is an essential growth-regulated enzyme indespensible for cell proliferation and survival (3,4). Indeed, conditional knock-out of murine USP8 was shown to promote a dramatic loss in expression of receptor tyrosine kinases, including EGFR, ErbB3, and c-Met (4). In agreement with these findings, USP8 inactivation leads to enhanced ubiquitination of ligand-activated EGFR (5,6). Furthermore, phosphorylation of USP8 at Ser680 results in its binding of 14-3-3, catalytic inactivation, and reduced EGFR deubiquitination (7). It appears as though USP8, in conjunction with components of the ESCRT-0 complex, plays an integral role in the early endosomal sorting machinery that functions to protect EGFR from lysosomal degradation (8,9). Alternate Names Deubiquitinating enzyme 8; FLJ34456; hUBPy; HumORF8; KIAA0055; MGC129718; PITA4; SPG59; Ubiquitin carboxyl-terminal hydrolase 8; Ubiquitin isopeptidase Y; ubiquitin specific peptidase 8; ubiquitin specific protease 8; Ubiquitin thioesterase 8; ubiquitin thiolesterase 8; Ubiquitin-specific-processing protease 8; UBP8; UBPY; USP8 Specification REACTIVITY: H Mk SENSITIVITY: Endogenous MW (kDa): 130 SOURCE: Rabbit