CD183 , also known as CXCR3 , is a member of the C-X-C chemokine family , characterized by a pair of cysteine residues separated by a single amino acid. CXCR3 is a 38 kD seven pass transmembrane receptor coupled to G-protein. It mediates Ca2+ mobilization and chemotaxis in response to C-X-C chemokines , such as IP10 (CXCL10) , MIG (CXCL9) , I-TAC (CXCL11) and PF4 (CXCL4) . CXCR3 is expressed primarily on activiated T lymphocytes , NK cells , and some epithelial cells and endothelial cells. It is not expressed on B cells , monocytes , or granulocytes.
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