Journal
ACTA BIOLOGICA HUNGARICA
Volume 54, Issue 2, Pages 191-201Publisher
AKADEMIAI KIADO
DOI: 10.1556/ABiol.54.2003.2.8
Keywords
human genome; database mining; orphan G-protein coupled receptors; ATP; P2Y; nucleotide receptors
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Since the first identification of P2Y receptor sequences in 1993, it has quickly become apparent that this family of the G-protein coupled receptors is very diverse. Members of this receptor family are activated extra-cellularly by a wide variety of adenosine and uridine nucleotides including sugar-nucleotides. The recent decipherment of the Human Genome has enabled us to search for new, yet undiscovered P2Y receptor subtypes. In this article we examine the relationships of six orphan G-protein coupled receptor (GPCR) sequences which show considerable sequence homology to various P2Y receptors. The clustering at a few chromosomal loci of P2Y receptor genes and their related orphan genes further suggests that particular P2Y subsets were derived from the same ancestral gene during evolution.
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