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Identification of a gene encoding for the human formyl peptide receptor.

The neutrophil FMLP receptor is involved in activation and subsequent response to certain chemotactic stimuli. The normal receptor has been reported to consist of several components, ranging in size from 43-94 kDa, and to contain both high and low affinity states. However, limited information is available on the gene/s which encode for the receptor. In this study, we have generated oligonucleotide probes derived from a published cDNA sequence encoding for one of the components of the FMLP receptor, and used these probes to amplify genomic DNA from HL-60 cells as well as normal human neutrophils, using the polymerase chain reaction. Such procedure resulted in the amplification of a single, approximately 1 kb fragment of genomic DNA identical in sequence to the cDNA described in the literature for one of the isoforms of the receptor. This finding supports the notion that the human FMLP receptor is encoded by at least one, intronless gene.