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  • Title: Molecular characterization of receptors for human interleukin-8, GRO/melanoma growth-stimulatory activity and neutrophil activating peptide-2.
    Author: Cerretti DP, Kozlosky CJ, Vanden Bos T, Nelson N, Gearing DP, Beckmann MP.
    Journal: Mol Immunol; 1993 Mar; 30(4):359-67. PubMed ID: 8384312.
    Abstract:
    Interleukin-8 (IL-8), neutrophil activating peptide-2 (NAP-2), and growth regulated gene (GRO, also known as melanoma growth stimulatory activity) are members of a family of peptides which are chemotactic agents for inflammatory cells such as neutrophils. Receptors have been identified for IL-8, GRO and NAP-2 on human neutrophils and granulocytic cell lines, and it has been observed that these cytokines can cross-compete for binding to a common receptor. Using the recently characterized rabbit IL-8 receptor as a probe, two classes of cDNAs, termed type 1 and type 2, were isolated from a human neutrophil library. The type 1 receptor binds only IL-8 while the type 2 receptor binds IL-8, GRO and NAP-2 at high affinity when respective cDNAs are expressed in COS-7 cells. The two cDNAs encode proteins that have an amino acid sequence identity of 77% while the type 1 and 2 receptors have an identity of 84 and 74% with the rabbit IL-8 receptor. These receptors also show significant homology with receptors for other chemotactic agents and with potential coding regions from the human cytomegalovirus genome.
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