Aliases for CXCR3 Gene
External Ids for CXCR3 Gene
Previous HGNC Symbols for CXCR3 Gene
Previous GeneCards Identifiers for CXCR3 Gene
This gene encodes a G protein-coupled receptor with selectivity for three chemokines, termed CXCL9/Mig (monokine induced by interferon-g), CXCL10/IP10 (interferon-g-inducible 10 kDa protein) and CXCL11/I-TAC (interferon-inducible T cell a-chemoattractant). Binding of chemokines to this protein induces cellular responses that are involved in leukocyte traffic, most notably integrin activation, cytoskeletal changes and chemotactic migration. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. One of the isoforms (CXCR3-B) shows high affinity binding to chemokine, CXCL4/PF4 (PMID:12782716). [provided by RefSeq, Jun 2011]
GeneCards Summary for CXCR3 Gene
CXCR3 (C-X-C Motif Chemokine Receptor 3) is a Protein Coding gene. Diseases associated with CXCR3 include Cutaneous Lupus Erythematosus and Pulmonary Sarcoidosis. Among its related pathways are CCR5 Pathway in Macrophages and CXCR3-mediated signaling events. Gene Ontology (GO) annotations related to this gene include G protein-coupled receptor activity and chemokine receptor activity. An important paralog of this gene is CXCR2.
UniProtKB/Swiss-Prot Summary for CXCR3 Gene
Isoform 1: Receptor for the C-X-C chemokine CXCL9, CXCL10 and CXCL11 and mediates the proliferation, survival and angiogenic activity of human mesangial cells (HMC) through a heterotrimeric G-protein signaling pathway (PubMed:12782716). Binds to CCL21. Probably promotes cell chemotaxis response.
Isoform 2: Receptor for the C-X-C chemokine CXCL4 and also mediates the inhibitory activities of CXCL9, CXCL10 and CXCL11 on the proliferation, survival and angiogenic activity of human microvascular endothelial cells (HMVEC) through a cAMP-mediated signaling pathway (PubMed:12782716). Does not promote cell chemotaxis respons. Interaction with CXCL4 or CXCL10 leads to activation of the p38MAPK pathway and contributes to inhibition of angiogenesis. Overexpression in renal cancer cells down-regulates expression of the anti-apoptotic protein HMOX1 and promotes apoptosis.
Isoform 3: Mediates the activity of CXCL11.
Chemokine CXC receptors (CXCRs) predominantly recognize CXC chemokines. CXC chemokines are distinguished by having four conserved cysteines, with the first two cysteines being separated by a single amino acid. There are six chemokine CXC receptors.