Biology:ITPR3

Short description: Protein-coding gene in the species Homo sapiens

Generic protein structure example

Inositol 1,4,5-trisphosphate receptor, type 3, also known as ITPR3, is a protein which in humans is encoded by the ITPR3 gene. The protein encoded by this gene is both a receptor for inositol triphosphate and a calcium channel.

Function

ITP3 channels serve an important role in the taste transduction pathway of sweet, bitter and umami tastes the gustatory system. ITP3 channels allow the flow of Calcium out of the endoplasmic reticulum in response to IP3. Calcium cations result in the activation of TRPM5 which leads to a depolarisation generating potential and an action potential.

See also

• Inositol trisphosphate receptor

Further reading

• "Revisiting ankyrin-InsP3 receptor interactions: ankyrin-B associates with the cytoplasmic N-terminus of the InsP3 receptor". J. Cell. Biochem. 104 (4): 1244–53. 2008. doi:10.1002/jcb.21704. PMID 18275062. 
• "A functional SNP in the NKX2.5-binding site of ITPR3 promoter is associated with susceptibility to systemic lupus erythematosus in Japanese population". J. Hum. Genet. 53 (2): 151–62. 2008. doi:10.1007/s10038-007-0233-3. PMID 18219441. 
• "Wide long lasting perinuclear Ca²⁺ release events generated by an interaction between ryanodine and IP3 receptors in canine Purkinje cells". J. Mol. Cell. Cardiol. 45 (2): 176–84. 2008. doi:10.1016/j.yjmcc.2008.05.008. PMID 18586264. 
• "Inositol 1,4,5-trisphosphate receptors are autoantibody target antigens in patients with Sjögren's syndrome and other systemic rheumatic diseases". Mod Rheumatol 17 (2): 137–43. 2007. doi:10.1007/s10165-006-0555-6. PMID 17437169. 
• "Neuroprotective effects of inositol 1,4,5-trisphosphate receptor C-terminal fragment in a Huntington's disease mouse model". J. Neurosci. 29 (5): 1257–66. 2009. doi:10.1523/JNEUROSCI.4411-08.2009. PMID 19193873. 
• "IP3 receptor-mediated Ca²⁺ release in naive CD4 T cells dictates their cytokine program". J. Immunol. 181 (12): 8315–22. 2008. doi:10.4049/jimmunol.181.12.8315. PMID 19050248. 
• "Apical localization of a functional TRPC3/TRPC6-Ca²⁺-signaling complex in polarized epithelial cells. Role in apical Ca²⁺ influx". J. Biol. Chem. 280 (13): 12908–16. 2005. doi:10.1074/jbc.M410013200. PMID 15623527. 
• "Regulation of InsP3 receptor activity by neuronal Ca²⁺-binding proteins". EMBO J. 23 (2): 312–21. 2004. doi:10.1038/sj.emboj.7600037. PMID 14685260. 
• "Distinct roles of inositol 1,4,5-trisphosphate receptor types 1 and 3 in Ca²⁺ signaling". J. Biol. Chem. 279 (12): 11967–75. 2004. doi:10.1074/jbc.M311456200. PMID 14707143. 
• "Global, in vivo, and site-specific phosphorylation dynamics in signaling networks". Cell 127 (3): 635–48. 2006. doi:10.1016/j.cell.2006.09.026. PMID 17081983. 
• "Genetic mapping at 3-kilobase resolution reveals inositol 1,4,5-triphosphate receptor 3 as a risk factor for type 1 diabetes in Sweden". Am. J. Hum. Genet. 79 (4): 614–27. 2006. doi:10.1086/507876. PMID 16960798. 
• "The clustering of inositol 1,4,5-trisphosphate (IP(3)) receptors is triggered by IP(3) binding and facilitated by depletion of the Ca²⁺ store". J. Pharmacol. Sci. 107 (2): 138–50. 2008. doi:10.1254/jphs.08021FP. PMID 18544901. 
• "CD44 interaction with ankyrin and IP3 receptor in lipid rafts promotes hyaluronan-mediated Ca²⁺ signaling leading to nitric oxide production and endothelial cell adhesion and proliferation". Exp. Cell Res. 295 (1): 102–18. 2004. doi:10.1016/j.yexcr.2003.12.025. PMID 15051494. 
• "Complete sequencing and characterization of 21,243 full-length human cDNAs". Nat. Genet. 36 (1): 40–5. 2004. doi:10.1038/ng1285. PMID 14702039. 
• Ogasawara H (2008). "The calcium kinetics and inositol trisphosphate receptor properties shape the asymmetric timing window of coincidence detection". J. Neurosci. 28 (17): 4293–4. doi:10.1523/JNEUROSCI.0644-08.2008. PMID 18434505. 
• "The association between type 1 diabetes and the ITPR3 gene polymorphism due to linkage disequilibrium with HLA class II". Genes Immun. 9 (3): 264–6. 2008. doi:10.1038/gene.2008.12. PMID 18340361. 
• "Role of sigma-1 receptor C-terminal segment in inositol 1,4,5-trisphosphate receptor activation: constitutive enhancement of calcium signaling in MCF-7 tumor cells". J. Biol. Chem. 283 (42): 28198–215. 2008. doi:10.1074/jbc.M802099200. PMID 18539593. 
• "Expression of IP3 receptor isoforms at the nodes of Ranvier in rat sciatic nerve". NeuroReport 18 (5): 447–50. 2007. doi:10.1097/WNR.0b013e32805868a6. PMID 17496801. 
• "IP3 receptor binds to and sensitizes TRPV4 channel to osmotic stimuli via a calmodulin-binding site". J. Biol. Chem. 283 (46): 31284–8. 2008. doi:10.1074/jbc.C800184200. PMID 18826956. 
• "Caveolin-1 scaffold domain interacts with TRPC1 and IP3R3 to regulate Ca²⁺ store release-induced Ca²⁺ entry in endothelial cells". Am. J. Physiol., Cell Physiol. 296 (3): C403–13. 2009. doi:10.1152/ajpcell.00470.2008. PMID 19052258. 

External links

• ITPR3+protein,+human at the US National Library of Medicine Medical Subject Headings (MeSH)