The human P2RX2 AND P2RX3 genes encode P2X2/P2X3, aheteromeric ionotropic ATP receptor that functions as an ATP-activated cation channel cation channel expressed in CNS and dorsal root ganglion
neurons. P2X2/P2X3 receptors expressed in neurons are therapeutic targets in treatment of pain.
http://www.creative-biogene.com/Human-P2RX2-P2RX3-Stable-Cell-Line-HEK293-196490-12.html