CST, 30163SF, XBP-1s (E7M5C) Mouse Monoclonal Antibody (BSA and Azide Free)

Monoclonal Antibody for studying XBP1S. Validated for Western Blotting,Immunofluorescence (Immunocytochemistry),Flow Cytometry (Fixed/Permeabilized). Highly specific and rigorously validated in-house, XBP-1s (E7M5C) Mouse Monoclonal Antibody (BSA and Azide Free) (CST #30163) is ready to ship. Product Usage Information This product is the carrier free version of product #47134. All data were generated using the same antibody clone in the standard formulation which contains BSA and glycerol. This formulation is ideal for use with technologies requiring specialized or custom antibody labeling, including fluorophores, metals, lanthanides, and oligonucleotides. It is not recommended for ChIP, ChIP-seq, CUT&RUN or CUT&Tag assays. If you require a carrier free formulation for chromatin profiling, please contact us . Optimal dilutions/concentrations should be determined by the end user. BSA and Azide Free antibodies are quality control tested by size exclusion chromatography (SEC) to determine antibody integrity. Formulation Supplied in 1X PBS (10 mM Na 2 HPO 4 , 3 mM KCl, 2 mM KH 2 PO 4 , and 140 mM NaCl (pH 7.8)). BSA and Azide Free. For standard formulation of this product see product # 47134 Storage Store at -20°C. This product will freeze at -20°C so it is recommended to aliquot into single-use vials to avoid multiple freeze/thaw cycles. A slight precipitate may be present and can be dissolved by gently vortexing. This will not interfere with antibody performance. Specificity / Sensitivity XBP-1s (E7M5C) Mouse Monoclonal Antibody (BSA and Azide Free) recognizes endogenous levels of total XBP-1s protein. Species Reactivity: Human Source / Purification Monoclonal antibody is produced by immunizing animals with a synthetic peptide corresponding to residues surrounding Val224 of human XBP-1s protein. Background Following protein synthesis, secretory, intra-organellar, and transmembrane proteins translocate into the endoplasmic reticulum (ER) where they are post-translationally modified and properly folded. The accumulation of unfolded proteins within the ER triggers an adaptive mechanism known as the unfolded protein response (UPR) that counteracts compromised protein folding (1). The transmembrane serine/threonine kinase IRE1, originally identified in , is a proximal sensor for the UPR that transmits the unfolded protein signal across the ER membrane (2-4). The human homolog IRE1α was later identified and is ubiquitously expressed in human tissues (5). Upon activation of the unfolded protein response, IRE1α splices X-box binding protein 1 (XBP-1) mRNA through an unconventional mechanism using its endoribonuclease activity (6). This reaction converts XBP-1 from an unspliced XBP-1u isoform to the spliced XBP-1s isoform, which is a potent transcriptional activator that induces expression of many UPR responsive genes (6). Alternate Names Tax-responsive element-binding protein 5; TREB-5; TREB5; X-box binding protein 1; X-box-binding protein 1; X-box-binding protein 1, cytoplasmic form; X-box-binding protein 1, luminal form; XBP-1; XBP-1S; XBP1; XBP1 iso2; XBP1(S); XBP2 Specification REACTIVITY: H SENSITIVITY: Endogenous MW (kDa): 60 Source/Isotype: Mouse IgG1