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Description

Human CXCR6 cDNA, The GPCR CXCR6 (previously known as BONZO, STRL33 and TYMSTR) binds selectively to the free chemokine domain of CXCL16, which is derived from a membrane-bound precursor containing a CXC-containing chemokine domain, a glycosylated mucin-like domain, and a transmembrane domain (Wilbanks et al., 2001) CXCR6 is selectively expressed on Th1, Th2 and Tr1 T cell subsets, whereas CXCL16 is expressed on monocytes/macrophages and dendritic cells (Tabata et al., 2005). CXCR6 promotes migration of activated lymphocytes to sites of inflammation in tissues such as liver and synovium (Nanki et al., 2005, Sato et al., 2005). Chemicon's CXCR6 membrane preparations are crude membrane preparations made from our proprietary stable recombinant cell lines to ensure high-level of GPCR surface expression, thus, they are ideal HTS tools for screening of antagonists of CXCR6 interactions with its ligands. The membrane preparations exhibit a Kd of 0.6 nM for [125I]-CXCL16. With 2.5 or 10 mug/well CXCR6 Membrane Prep and 0.5 nM [125I]-CXCL16, greater than 4-fold and 9-fold signal-to-background ratios are obtained, respectively.