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Inositol triphosphate receptor

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inositol 1,4,5-triphosphate receptor, type 1
Identifiers
Symbol(s) ITPR1
Entrez 3708
OMIM 147265
RefSeq NM_002222
UniProt Q14643
Other data
Locus Chr. 3 p26.1
inositol 1,4,5-triphosphate receptor, type 2
Identifiers
Symbol(s) ITPR2
Entrez 3709
OMIM 600144
RefSeq NM_002223
UniProt Q14571
Other data
Locus Chr. 12 p11.23
inositol 1,4,5-triphosphate receptor, type 3
Identifiers
Symbol(s) ITPR3
Entrez 3710
OMIM 147267
RefSeq NM_002224
UniProt Q14573
Other data
Locus Chr. 6 p21.31

Inositol trisphosphate receptor (IP3R) is a membrane glycoprotein complex acting as Ca2+ channel activated by inositol trisphosphate (IP3). It has a broad tissue distribution but is especially abundant in the cerebellum. Most of the IP3R's are found in the cell integrated into the endoplasmic reticulum. The IP3R complex is formed of four 313 kDa subunits. There are 3 isoforms and these can form homo- or hetero-oligomers.

See also:


Lipid signaling
Phospholipase | Phosphatidylinositol (4,5)-bisphosphate | Diacylglycerol | Inositol triphosphate | Inositol triphosphate receptor
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