该基因编码基质细胞衍生因子-1特有的CXC趋化因子受体。该蛋白有7个跨膜区，位于细胞表面。它与CD4蛋白一起作用，支持HIV进入细胞，并在乳腺癌细胞中高度表达。该基因突变与突发性（疣、低丙种球蛋白血症、感染和骨髓增生）综合征有关。编码不同亚型的替代转录剪接变异体已经被描述。
This gene encodes a CXC chemokine receptor specific for stromal cell-derived factor-1. The protein has 7 transmembrane regions and is located on the cell surface. It acts with the CD4 protein to support HIV entry into cells and is also highly expressed in breast cancer cells. Mutations in this gene have been associated with WHIM (warts, hypogammaglobulinemia, infections, and myelokathexis) syndrome. Alternate transcriptional splice variants, encoding different isoforms, have been characterized.
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