P2X3 is a subunit in the family of ion channels activated by extracellular ATP. It was cloned from rat dorsal root ganglia. P2X3 has two putative transmembrane domains with intracellular N- and C-termini. It can form homomeric channels and heteromeric channels with other members of the family. P2X3 is expressed in nociceptive sensory neurons.
Intended for research use only. Not for use in human, therapeutic, or diagnostic applications.