P2RX3

P2X purinoceptor 3 is a protein that in humans is encoded by the P2RX3 gene.[5][6]

P2RX3
Identifiers
Aliases	P2RX3, P2X3, purinergic receptor P2X 3
External IDs	OMIM: 600843 MGI: 1097160 HomoloGene: 1922 GeneCards: P2RX3
Gene location (Human) Chr. Chromosome 11 (human)[1] Band 11q12.1 Start 57,338,352 bp[1] End 57,372,396 bp[1]
Gene location (Mouse) Chr. Chromosome 2 (mouse)[2] Band 2|2 D Start 84,998,583 bp[2] End 85,037,462 bp[2]
Gene ontology Molecular function • purinergic nucleotide receptor activity • ion channel activity • ATP binding • extracellular ATP-gated cation channel activity • nucleotide binding • ATP-gated ion channel activity Cellular component • integral component of membrane • rough endoplasmic reticulum • Golgi apparatus • membrane • receptor complex • dendritic spine • integral component of nuclear inner membrane • integral component of plasma membrane • neuronal cell body • terminal bouton • axon • membrane raft • neuron projection • cell membrane • Schaffer collateral - CA1 synapse • hippocampal mossy fiber to CA3 synapse • integral component of presynaptic membrane Biological process • peristalsis • response to ATP • response to hypoxia • positive regulation of calcium-mediated signaling • positive regulation of calcium ion transport into cytosol • urinary bladder smooth muscle contraction • response to mechanical stimulus • cation transport • response to heat • ion transport • behavioral response to formalin induced pain • response to organic substance • cation transmembrane transport • regulation of synaptic plasticity • neuromuscular synaptic transmission • positive regulation of sensory perception of pain • behavioral response to pain • response to cold • protein homooligomerization • response to carbohydrate • sensory perception of taste • signal transduction • neuronal action potential • response to temperature stimulus • chemical synaptic transmission • purinergic nucleotide receptor signaling pathway • blood coagulation • excitatory postsynaptic potential • monovalent inorganic cation transport • protein homotrimerization • cellular response to ATP • modulation of chemical synaptic transmission • ion transmembrane transport Sources:Amigo / QuickGO
Orthologs
Species	Human	Mouse
Entrez	5024	228139
Ensembl	ENSG00000109991	ENSMUSG00000027071
UniProt	P56373	Q3UR32
RefSeq (mRNA)	NM_002559	NM_145526
RefSeq (protein)	NP_002550	NP_663501
Location (UCSC)	Chr 11: 57.34 – 57.37 Mb	Chr 2: 85 – 85.04 Mb
PubMed search	[3]	[4]
Wikidata
View/Edit Human View/Edit Mouse

The product of this gene belongs to the family of purinoceptors for ATP. This receptor functions as a ligand-gated ion channel and may transduce ATP-evoked nociceptor activation. Mouse studies suggest that this receptor is important for peripheral pain responses, and also participates in pathways controlling urinary bladder volume reflexes, platelet aggregation, macrophage activation, apoptosis and neuronal–glial interactions. It is possible that the development of selective antagonists for this receptor may have a therapeutic potential in pain relief and in the treatment of disorders of urine storage.[6]

Ligands

Antagonists

• BLU-5937
• Gefapixant
• Opiranserin

See also

• P2X purinoreceptor
• Purinergic receptor
• Ligand-gated ion channel
• Nociceptor

References

1. GRCh38: Ensembl release 89: ENSG00000109991 - Ensembl, May 2017
2. GRCm38: Ensembl release 89: ENSMUSG00000027071 - Ensembl, May 2017
3. "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
4. "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
5. Garcia-Guzman M, Stuhmer W, Soto F (Sep 1997). "Molecular characterization and pharmacological properties of the human P2X3 purinoceptor". Brain Res Mol Brain Res. 47 (1–2): 59–66. doi:10.1016/S0169-328X(97)00036-3. PMID 9221902.
6. "Entrez Gene: P2RX3 purinergic receptor P2X, ligand-gated ion channel, 3".

Further reading

• North RA (2002). "Molecular physiology of P2X receptors". Physiol. Rev. 82 (4): 1013–67. doi:10.1152/physrev.00015.2002. PMID 12270951.
• Jarvis MF (2005). "Contributions of P2X3 homomeric and heteromeric channels to acute and chronic pain". Expert Opin. Ther. Targets. 7 (4): 513–22. doi:10.1517/14728222.7.4.513. PMID 12885270.
• Kennedy C, Leff P (1995). "Painful connection for ATP". Nature. 377 (6548): 385–6. doi:10.1038/377385a0. PMID 7566110.
• Lewis C, Neidhart S, Holy C, et al. (1995). "Coexpression of P2X2 and P2X3 receptor subunits can account for ATP-gated currents in sensory neurons". Nature. 377 (6548): 432–5. doi:10.1038/377432a0. PMID 7566120.
• Garcia-Guzman M, Soto F, Gomez-Hernandez JM, et al. (1997). "Characterization of recombinant human P2X4 receptor reveals pharmacological differences to the rat homologue". Mol. Pharmacol. 51 (1): 109–18. PMID 9016352.
• Cook SP, McCleskey EW (2000). "ATP, pain and a full bladder". Nature. 407 (6807): 951–2. doi:10.1038/35039648. PMID 11069162.
• Strausberg RL, Feingold EA, Grouse LH, et al. (2003). "Generation and initial analysis of more than 15,000 full-length human and mouse cDNA sequences". Proc. Natl. Acad. Sci. U.S.A. 99 (26): 16899–903. doi:10.1073/pnas.242603899. PMC 139241. PMID 12477932.
• Renton T, Yiangou Y, Baecker PA, et al. (2003). "Capsaicin receptor VR1 and ATP purinoceptor P2X3 in painful and nonpainful human tooth pulp". Journal of Orofacial Pain. 17 (3): 245–50. PMID 14520770.
• Mason HS, Bourke S, Kemp PJ (2005). "Selective modulation of ligand-gated P2X purinoceptor channels by acute hypoxia is mediated by reactive oxygen species". Mol. Pharmacol. 66 (6): 1525–35. doi:10.1124/mol.104.000851. PMID 15331767.
• Fabbretti E, Sokolova E, Masten L, et al. (2005). "Identification of negative residues in the P2X3 ATP receptor ectodomain as structural determinants for desensitization and the Ca2+-sensing modulatory sites". J. Biol. Chem. 279 (51): 53109–15. doi:10.1074/jbc.M409772200. PMID 15475563.
• Brown DA, Yule DI (2007). "Protein kinase C regulation of P2X3 receptors is unlikely to involve direct receptor phosphorylation". Biochim. Biophys. Acta. 1773 (2): 166–75. doi:10.1016/j.bbamcr.2006.09.020. PMC 1861828. PMID 17052768.

External links

• P2RX3+protein,+human at the US National Library of Medicine Medical Subject Headings (MeSH)

This article incorporates text from the United States National Library of Medicine, which is in the public domain.