ATP is a co-transmitter in the central and peripheral nervous system. Extracellular ATP exerts its effects via ionotropic (P2X), as well as metabotropic receptors (P2Y). P2X receptors are involved in fast excitatory synaptic signalling by ATP, whereas the role of P2Y receptors in synaptic transmission is unclear. Seven different mammalian P2X receptor subunits (P2X1–7) have been cloned to date. This article gives an overview about the distribution of these P2X receptor subunits in the nervous system. A comparison is made between the pharmacological properties of recombinant receptors and natively occurring neuronal P2X receptors by means of electrophysiological methods. The subcellular distribution of, developmental influences on, and interspecies differences between P2X receptors are also considered. It is concluded that the properties of native P2X receptors are best explained by a heteromeric assembly of different P2X receptor subunits.
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Similar content being viewed by others Explore related subjectsDiscover the latest articles and news from researchers in related subjects, suggested using machine learning. Author information Authors and AffiliationsRudolf-Boehm-Institut für Pharmakologie und Toxikologie, Medizinische Fakultät der Universität Leipzig, Härtelstrasse 16–18, D-04107 Leipzig, Germany
Wolfgang Nörenberg & Peter Illes
Electronic Publication
About this article Cite this articleNörenberg, W., Illes, P. Neuronal P2X receptors: localisation and functional properties. Naunyn-Schmied Arch Pharmacol 362, 324–339 (2000). https://doi.org/10.1007/s002100000311
Published: 17 August 2000
Issue Date: November 2000
DOI: https://doi.org/10.1007/s002100000311
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