CST, 5751S, USP9X Antibody

Polyclonal Antibody for studying USP9X. Validated for Western Blotting. Available in 2 sizes. Highly specific and rigorously validated in-house, USP9X Antibody (CST #5751) 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 USP9X Antibody recognizes endogenous levels of total USP9X protein. This antibody may also cross-react with USP9Y. Species Reactivity: Human, Mouse, Rat, Monkey, Dog Source / Purification Polyclonal antibodies are produced by immunizing animals with a synthetic peptide corresponding to residues surrounding Phe2137 of human USP9X protein. Antibodies are purified by protein A and peptide affinity chromatography. Background Protein ubiquitination and deubiquitination are reversible processes catalyzed by ubiquitinating enzymes (UBEs) and deubiquitinating enzymes (DUBs) respectively (1,2). DUBs are categorized into five subfamilies-USP, UCH, OTU, MJD, and JAMM. Ubiquitin-specific protease 9, X-linked (USP9X) possesses a well-conserved catalytic domain with cysteine peptidase activity, which allows for cleavage of ubiquitin and polyubiquitin conjugates. USP9X is the mammalian homolog of the ( ) gene, which is essential for normal eye development and viability of the early fly embryo (3,4). While USP9X expression is also critical for normal mammalian development (5-7), many of its substrates are only beginning to be elucidated. There is mounting evidence that USP9X functions in the formation of epithelial cell-cell contacts through deubiquitination-dependent stabilization of molecules involved in maintaining the integrity of both adherens and tight junctions. Indeed, USP9X has been found to associate with AF-6, the β-catenin-E-cadherin complex, and EFA6 (8-11). Research studies have also demonstrated that USP9X is an integral component of the TGF-β/BMP signaling cascade by opposing TRIM33-mediated monoubiquitination of SMAD4 (12). USP9X is overexpressed in a variety of human cancers and contributes to enhanced cell survival, in part, through its ability to deubiquitinate and stabilize the Mcl-1 oncoprotein (13). There is some evidence, however, that suggests the role of USP9X in tumorigenesis is context dependent. Research studies have implicated USP9X in a tumor suppressor role during the early stages of pancreatic ductal adenocarcinoma (PDAC) and in an oncogenic role during advanced stages of PDAC (14,15). Alternate Names Deubiquitinating enzyme FAF-X; DFFRX; Drosophila fat facets related, X-linked; FAF; FAM; Fat facets in mammals; fat facets protein related, X-linked; Fat facets protein-related, X-linked; hFAM; MRX99; MRXS99F; Probable ubiquitin carboxyl-terminal hydrolase FAF-X; ubiquitin specific peptidase 9 X-linked; ubiquitin specific peptidase 9, X-linked; ubiquitin specific protease 9, X chromosome (fat facets-like Drosophila); Ubiquitin thioesterase FAF-X; ubiquitin thiolesterase FAF-X; ubiquitin-specific processing protease FAF-X; Ubiquitin-specific protease 9, X chromosome; Ubiquitin-specific-processing protease FAF-X; USP9; USP9X Specification REACTIVITY: H M R Mk Dg SENSITIVITY: Endogenous MW (kDa): 270 SOURCE: Rabbit