Table 1. P2Y and P2X receptor subtypes... | American Society of Hematology

Table 1.

P2Y and P2X receptor subtypes

P2Y	Amino acid number	P2X	Amino acid number
P2Y₁	362	P2X₁	399
P2Y₂	373	P2X₂^†	472, 401
p2y3^*	328	P2X₃	397
P2Y₄	352	P2X₄^†	388, 329
P2Y₆	379	P2X₅	455
P2Y₁₁	371	P2X₆	379
		P2X₇	595

P2Y	Amino acid number	P2X	Amino acid number
P2Y₁	362	P2X₁	399
P2Y₂	373	P2X₂^†	472, 401
p2y3^*	328	P2X₃	397
P2Y₄	352	P2X₄^†	388, 329
P2Y₆	379	P2X₅	455
P2Y₁₁	371	P2X₆	379
		P2X₇	595

p2y3 was cloned from chick brain and may be the chick homologue of the mammalian P2Y₆.

P2X₂ and P2X₄ are present in two splice variants.