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]
RNA expression pattern Bgee Human Mouse (ortholog) Top expressed in left ventricle right lobe of liver right adrenal gland striated muscle tissue skeletal muscle tissue embryo islet of Langerhans fundus gallbladder ganglionic eminence Top expressed in spermatid trigeminal ganglion seminiferous tubule Greater petrosal nerve spermatocyte neural tube blastocyst saccule proximal tubule lip More reference expression data BioGPS n/a
Gene ontology Molecular function purinergic nucleotide receptor activity ion channel activity ATP binding extracellularly 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 plasma 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 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
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P2X purinoceptor 3 is a protein that in humans is encoded by the P2RX3 gene.^[5][6]

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