The protein encoded by this gene belongs to the family of G-protein coupled receptors that is preferentially activated by adenosine and uridine nucleotides. Two alternatively spliced transcript variants encoding the same protein isoform have been found for this gene.
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↑Ralevic V, Burnstock G (September 1998). "Receptors for purines and pyrimidines". Pharmacological Reviews. 50 (3): 413–92. PMID9755289.