A family of proinflammatory cytokines sharing several structural features has been described and includes, for example, interleukin-8, monocyte chemoattractant protein-1, and melanocyte growth stimulatory activity. Recently, the receptors for interleukin-8 have been isolated and found to belong to the seven-transmembrane domain class of G protein-coupled receptors. As other members of this cytokine family likely interact with similar receptors, the polymerase chain reaction was employed to isolate related receptors from human peripheral blood adherent cells. Degenerate oligonucleotide primers based on the rabbit interleukin-8 receptor sequence were used. The corresponding full-length cDNA was isolated from a human spleen cDNA library. The predicted protein sequence of this clone, designated pBE1.3, was 93% identical to that of a cDNA isolated from bovine locus coeruleus, which apparently encodes a neuropeptide Y receptor, and also shows similarity with the interleukin-8 receptor and the human cytomegalovirus US28 sequences. The gene, designated D2S201E was localized to human chromosome 2q21. By Northern blotting, transcripts hybridizing to this cDNA were present in a variety of tissues and cells, including those of hemopoietic origin. © 1993 Academic Press. All rights reserved.
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