Purinergic Receptor P2Y, G Protein Coupled 1 (P2RY1)

P2RY1 belongs to the family of G-protein coupled receptors. This family has several receptor subtypes with different pharmacological selectivity, which overlaps in some cases, for various adenosine and uridine nucleotides. This receptor functions as a receptor for extracellular ATP and ADP. In platelets binding to ADP leads to mobilization of intracellular calcium ions via activation of phospholipase C, a change in platelet shape, and probably to platelet aggregation. The pharmacologic properties of the P2Y1 receptor are similar to those of the P2T ADP receptor that is responsible for platelet aggregation. They showed that the P2Y1 receptor is expressed by human platelets and megakaryoblasts. The authors suggested that the P2Y1 receptor may be the P2T receptor.