The chemokine beta family is comprised of at least six distinct cytokines that regulate trafficking of phagocytes and lymphocytes in mammalian species; at least one of these, macrophage inflammatory protein 1 alpha (MIP-1 alpha), also regulates the growth of hematopoietic stem cells. We now show that MIP-1 alpha and the related beta chemokine, RANTES, induce transient alterations in intracellular Ca2+ concentration in polymorphonuclear leukocytes that can be reciprocally and specifically desensitized, suggesting a common receptor. Moreover, we have now cloned both the cDNA and the gene for this receptor, functionally expressed the receptor in Xenopus oocytes, and mapped the gene to human chromosome 3p21. Transcripts for the receptor were found in mature and immature myeloid cells as well as B cells. The receptor is a member of the G protein-coupled receptor superfamily. It has approximately 33% amino acid identity with receptors for the alpha chemokine, interleukin 8, and may be the human homologue of the product of US28, an open reading frame of human cytomegalovirus.
Structure and functional expression of the human macrophage inflammatory protein 1 alpha/RANTES receptor
Ji-Liang Gao,D. Kuhns,H. Tiffany,David H. McDermott,Xu Li,U. Francke,P. Murphy
Published 1993 in Journal of Experimental Medicine
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- Publication year
1993
- Venue
Journal of Experimental Medicine
- Publication date
1993-05-01
- Fields of study
Biology, Medicine
- Identifiers
- External record
- Source metadata
Semantic Scholar, PubMed
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