| ID | Sequence | Length | GC content |
|---|---|---|---|
| AGUGGUGAUAGCUGAGAAUAUGCAGCCGUUUUCUCCUUCCUGGGUACAG… | 2656 nt | 0.4767 | |
| AGAGACAGAAGGUGGAUAGACAAAUCUCCACCUUCAGACUGGUAGGCUC… | 2853 nt | 0.4788 |
The protein encoded by this gene is a member of the G-protein-coupled receptor family. This protein is a receptor for interleukin 8 (IL8). It binds to IL8 with high affinity, and transduces the signal through a G-protein activated second messenger system. This receptor also binds to chemokine (C-X-C motif) ligand 1 (CXCL1/MGSA), a protein with melanoma growth stimulating activity, and has been shown to be a major component required for serum-dependent melanoma cell growth. This receptor mediates neutrophil migration to sites of inflammation. The angiogenic effects of IL8 in intestinal microvascular endothelial cells are found to be mediated by this receptor. Knockout studies in mice suggested that this receptor controls the positioning of oligodendrocyte precursors in developing spinal cord by arresting their migration. This gene, IL8RA, a gene encoding another high affinity IL8 receptor, as well as IL8RBP, a pseudogene of IL8RB, form a gene cluster in a region mapped to chromosome 2q33-q36. Alternatively spliced variants, encoding the same protein, have been identified. [provided by RefSeq, Nov 2009]
A study in mice and humans demonstrated that the CXCR2 mRNA, but not its protein, is significantly elevated in antemortem skin contusions compared to intact skin and postmortem injuries, serving as a potential marker for vital reactions [He et al. DOI:10.1007/s12024-018-9969-7]. In mice, this increased mRNA expression persisted up to 72 hours postmortem, while in human autopsy samples, elevated levels were detected up to 48 hours after autopsy in four out of five cases, indicating its forensic applicability for determining wound vitality. A study in rats demonstrated that the CXCR2 was significantly upregulated in the right ventricle following acute right heart failure induced by pulmonary artery banding [Cao et al. DOI:10.1177/2045894019879396]. In a separate rat model of mild blast traumatic brain injury, mRNA expression of the CXCR2 was transiently increased at 2 hours after a 5 psi blast exposure and showed earlier, greater, and sustained up-regulation following higher intensity (10-11 psi) exposures [Balaban et al. DOI:10.1016/j.jneumeth.2016.02.001].