Q9Z329 (ITPR2_MOUSE) Reviewed, UniProtKB/Swiss-Prot
Last modified
May 1, 2013.
Version 115.
History...
Names·Attributes·General annotation·Ontologies·Alt products·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize order
Names·Attributes·General annotation·Ontologies·Alt products·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize orderNames and origin
| Protein names | Recommended name: Inositol 1,4,5-trisphosphate receptor type 2 Alternative name(s): IP3 receptor isoform 2 Short name=IP3R 2 Short name=InsP3R2 Inositol 1,4,5-trisphosphate type V receptor Type 2 inositol 1,4,5-trisphosphate receptor Short name=Type 2 InsP3 receptor | ||||
| Gene names |
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| Organism | Mus musculus (Mouse) [Reference proteome] | ||||
| Taxonomic identifier | 10090 [NCBI] | ||||
| Taxonomic lineage | Eukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Euarchontoglires › Glires › Rodentia › Sciurognathi › Muroidea › Muridae › Murinae › Mus › Mus![]() |
Protein attributes
| Sequence length | 2701 AA. |
| Sequence status | Complete. |
| Protein existence | Evidence at protein level |
General annotation (Comments)
| Function | Receptor for inositol 1,4,5-trisphosphate, a second messenger that mediates the release of intracellular calcium. This release is regulated by cAMP both dependently and independently of PKA. Ref.1 Ref.3 Ref.10 Isoform 3 has neither inositol 1,4,5-trisphosphate binding activity nor calcium releasing activity. Ref.1 Ref.3 Ref.10 |
| Subunit structure | Homotetramer By similarity. Interacts with CABP1 By similarity. |
| Subcellular location | Endoplasmic reticulum membrane; Multi-pass membrane protein Ref.1. |
| Tissue specificity | Isoforms 1 and 3 are widely expressed. Isoform 2 is found in skeletal muscle and heart. Ref.1 |
| Domain | The receptor contains a calcium channel in its C-terminal extremity. Its large N-terminal cytoplasmic region has the ligand-binding site in the N-terminus and modulatory sites in the middle portion immediately upstream of the channel region. |
| Post-translational modification | Phosphorylation by cAMP-dependent PKA on Ser-937 increases calcium release. |
| Sequence similarities | Belongs to the InsP3 receptor family. Contains 5 MIR domains. |
Ontologies
Alternative products
| This entry describes 3 isoforms produced by alternative splicing. [Align] [Select] | ||||||
| Isoform 1 (identifier: Q9Z329-1) Also known as: Long; This isoform has been chosen as the 'canonical' sequence. All positional information in this entry refers to it. This is also the sequence that appears in the downloadable versions of the entry. | ||||||
| Isoform 2 (identifier: Q9Z329-2) Also known as: Short; TIPR; The sequence of this isoform differs from the canonical sequence as follows: 175-175: N → NDMGAVI 176-1281: Missing. | ||||||
| Isoform 3 (identifier: Q9Z329-3) Also known as: Itpr2v; The sequence of this isoform differs from the canonical sequence as follows: 176-208: Missing. |
Sequence annotation (Features)
| Feature key | Position(s) | Length | Description | Graphical view | Feature identifier | ||||
Molecule processing | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Chain | 1 – 2701 | 2701 | Inositol 1,4,5-trisphosphate receptor type 2 | PRO_0000153925 | |||||
Regions | |||||||||
| Topological domain | 1 – 2227 | 2227 | Cytoplasmic Potential | ||||||
| Transmembrane | 2228 – 2248 | 21 | Helical; Potential | ||||||
| Topological domain | 2249 – 2260 | 12 | Extracellular Potential | ||||||
| Transmembrane | 2261 – 2281 | 21 | Helical; Potential | ||||||
| Topological domain | 2282 – 2307 | 26 | Cytoplasmic Potential | ||||||
| Transmembrane | 2308 – 2328 | 21 | Helical; Potential | ||||||
| Topological domain | 2329 – 2351 | 23 | Extracellular Potential | ||||||
| Transmembrane | 2352 – 2372 | 21 | Helical; Potential | ||||||
| Topological domain | 2373 – 2394 | 22 | Cytoplasmic Potential | ||||||
| Transmembrane | 2395 – 2415 | 21 | Helical; Potential | ||||||
| Topological domain | 2416 – 2520 | 105 | Extracellular Potential | ||||||
| Transmembrane | 2521 – 2541 | 21 | Helical; Potential | ||||||
| Topological domain | 2542 – 2701 | 160 | Cytoplasmic Potential | ||||||
| Domain | 112 – 166 | 55 | MIR 1 | ||||||
| Domain | 173 – 223 | 51 | MIR 2 | ||||||
| Domain | 231 – 287 | 57 | MIR 3 | ||||||
| Domain | 294 – 372 | 79 | MIR 4 | ||||||
| Domain | 378 – 434 | 57 | MIR 5 | ||||||
| Region | 265 – 269 | 5 | Inositol 1,4,5-trisphosphate binding By similarity | ||||||
| Region | 507 – 510 | 4 | Inositol 1,4,5-trisphosphate binding By similarity | ||||||
| Region | 567 – 569 | 3 | Inositol 1,4,5-trisphosphate binding By similarity | ||||||
Amino acid modifications | |||||||||
| Modified residue | 937 | 1 | Phosphoserine; by PKA Ref.10 | ||||||
| Modified residue | 1160 | 1 | Phosphoserine By similarity | ||||||
| Modified residue | 1709 | 1 | Phosphoserine Ref.9 | ||||||
| Modified residue | 2607 | 1 | Phosphotyrosine Potential | ||||||
Natural variations | |||||||||
| Alternative sequence | 175 | 1 | N → NDMGAVI in isoform 2. | VSP_002701 | |||||
| Alternative sequence | 176 – 1281 | 1106 | Missing in isoform 2. | VSP_002702 | |||||
| Alternative sequence | 176 – 208 | 33 | Missing in isoform 3. | VSP_016026 | |||||
Experimental info | |||||||||
| Mutagenesis | 507 | 1 | K → A: Loss of binding activity. Ref.1 | ||||||
| Mutagenesis | 510 | 1 | R → A: Loss of binding activity. Ref.1 | ||||||
| Mutagenesis | 937 | 1 | S → A: Abolishes PKA-mediated phosphorylation. No enhanced calcium release. Abolishes PKA-mediated phosphorylation: When associated with A-990; A-1190; A-1351 and A-1581. Ref.10 | ||||||
| Mutagenesis | 990 | 1 | S → A: No effect on PKA-mediated phosphorylation. Abolishes PKA-mediated phosphorylation: When associated with A-937; A-1190; A-1351 and A-1581. Ref.10 | ||||||
| Mutagenesis | 1190 | 1 | S → A: No effect on PKA-mediated phosphorylation. Abolishes PKA-mediated phosphorylation: When associated with A-937; A-990; A-1351 and A-1581. Ref.10 | ||||||
| Mutagenesis | 1351 | 1 | S → A: No effect on PKA-mediated phosphorylation. Abolishes PKA-mediated phosphorylation: When associated with A-937; A-990; A-1190 and A-1581. Ref.10 | ||||||
| Mutagenesis | 1581 | 1 | S → A: No effect on PKA-mediated phosphorylation. Abolishes PKA-mediated phosphorylation: When associated with A-937; A-990; A-1190 and A-1351. Ref.10 | ||||||
| Mutagenesis | 2633 | 1 | S → A: No effect on PKA-mediated phosphorylation. Enhanced calcium release on PKA activation. Ref.10 | ||||||
| Sequence conflict | 1710 | 1 | I → V in AAH25805. Ref.6 | ||||||
| Sequence conflict | 1729 | 1 | S → G in AAH25805. Ref.6 | ||||||
| Sequence conflict | 1738 | 1 | K → T in AAH25805. Ref.6 | ||||||
| Sequence conflict | 2196 | 1 | F → L in CAA94861. Ref.7 | ||||||
| Sequence conflict | 2223 | 1 | S → P in AAH25805. Ref.6 | ||||||
| Sequence conflict | 2265 | 1 | V → A in AAH25805. Ref.6 | ||||||
| Sequence conflict | 2265 | 1 | V → A in CAA94861. Ref.7 | ||||||
| Sequence conflict | 2265 | 1 | V → A in CAA83957. Ref.8 | ||||||
Sequences
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References
| « Hide 'large scale' references | |
| [1] | "Molecular cloning of mouse type 2 and type 3 inositol 1,4,5-trisphosphate receptors and identification of a novel type 2 receptor splice variant." Iwai M., Tateishi Y., Hattori M., Mizutani A., Nakamura T., Futatsugi A., Inoue T., Furuichi T., Michikawa T., Mikoshiba K. J. Biol. Chem. 280:10305-10317(2005) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORMS 1 AND 3), FUNCTION, TISSUE SPECIFICITY, SUBCELLULAR LOCATION, MUTAGENESIS OF LYS-507 AND ARG-510. Strain: C57BL/6J. Tissue: Lung. |
| [2] | "Muscle-specific mRNA isoform encodes a protein composed mainly of the N-terminal 175 residues of type 2 Ins(1,4,5)P3 receptor." Futatsugi A., Kuwajima G., Mikoshiba K. Biochem. J. 334:559-563(1998) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 2). Tissue: Heart. |
| [3] | "Regulation of inositol 1,4,5-trisphosphate receptors by cAMP independent of cAMP-dependent protein kinase." Tovey S.C., Dedos S.G., Rahman T., Taylor E.J., Pantazaka E., Taylor C.W. J. Biol. Chem. 285:12979-12989(2010) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA], FUNCTION. |
| [4] | "Lineage-specific biology revealed by a finished genome assembly of the mouse." Church D.M., Goodstadt L., Hillier L.W., Zody M.C., Goldstein S., She X., Bult C.J., Agarwala R., Cherry J.L., DiCuccio M., Hlavina W., Kapustin Y., Meric P., Maglott D., Birtle Z., Marques A.C., Graves T., Zhou S. Ponting C.P.PLoS Biol. 7:E1000112-E1000112(2009) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: C57BL/6J. |
| [5] | Mural R.J., Adams M.D., Myers E.W., Smith H.O., Venter J.C. Submitted (JUL-2005) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. |
| [6] | "The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC)." The MGC Project Team Genome Res. 14:2121-2127(2004) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] OF 1290-2701. Strain: Czech II. Tissue: Mammary tumor. |
| [7] | "Determination of relative amounts of inositol trisphosphate receptor mRNA isoforms by ratio polymerase chain reaction." De Smedt H., Missiaen L., Parys J.B., Bootman M.D., Mertens L., Van Den Bosch L., Casteels R. J. Biol. Chem. 269:21691-21698(1994) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] OF 1693-2701 (ISOFORM 1). Strain: C3H. Tissue: Embryo. |
| [8] | "Isoform diversity of the inositol trisphosphate receptor in cell types of mouse origin." De Smedt H., Missiaen L., Parys J.B., Henning R.H., Sienaert I., Vanlingen S., Gijsens A., Himpens B., Casteels R. Biochem. J. 322:575-583(1997) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] OF 2238-2646 (ISOFORM 1). Strain: C3H. Tissue: Embryo. |
| [9] | "Solid tumor proteome and phosphoproteome analysis by high resolution mass spectrometry." Zanivan S., Gnad F., Wickstroem S.A., Geiger T., Macek B., Cox J., Faessler R., Mann M. J. Proteome Res. 7:5314-5326(2008) [PubMed] [Europe PMC] [Abstract] Cited for: PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT SER-1709, MASS SPECTROMETRY. Tissue: Melanoma. |
| [10] | "Protein kinase A increases type-2 inositol 1,4,5-trisphosphate receptor activity by phosphorylation of serine 937." Betzenhauser M.J., Fike J.L., Wagner L.E. II, Yule D.I. J. Biol. Chem. 284:25116-25125(2009) [PubMed] [Europe PMC] [Abstract] Cited for: PHOSPHORYLATION AT SER-937, FUNCTION, MUTAGENESIS OF SER-937; SER-990; SER-1190; SER-1351; SER-1581 AND SER-2633. |
| + | Additional computationally mapped references. |
Cross-references
Sequence databases | |
|---|---|
| EMBL GenBank DDBJ | AB182288 mRNA. Translation: BAD90682.1. AB182290 mRNA. Translation: BAD90684.1. AB012393 mRNA. Translation: BAA33960.1. GU980658 mRNA. Translation: ADG01867.1. CU207333, CU207302, CU207317 Genomic DNA. Translation: CAQ51734.1. CU207302, CU207317, CU207333 Genomic DNA. Translation: CAQ51929.1. CU207317, CU207302, CU207333 Genomic DNA. Translation: CAQ52319.1. CH466572 Genomic DNA. Translation: EDL10703.1. BC025805 mRNA. Translation: AAH25805.1. Z71173 mRNA. Translation: CAA94861.1. Z33908 mRNA. Translation: CAA83957.1. |
| IPI | IPI00222043. IPI00556814. IPI00896029. |
| PIR | I48607. |
| RefSeq | NP_034716.1. NM_010586.2. NP_064307.2. NM_019923.4. |
| UniGene | Mm.393003. Mm.7800. |
3D structure databases | |
| ProteinModelPortal | Q9Z329. |
| SMR | Q9Z329. Positions 5-578. |
| ModBase | Search... |
PTM databases | |
| PhosphoSite | Q9Z329. |
Proteomic databases | |
| PaxDb | Q9Z329. |
| PRIDE | Q9Z329. |
Protocols and materials databases | |
| StructuralBiologyKnowledgebase | Search... |
Genome annotation databases | |
| Ensembl | ENSMUST00000053273; ENSMUSP00000049584; ENSMUSG00000030287. ENSMUST00000079573; ENSMUSP00000078526; ENSMUSG00000030287. |
| GeneID | 16439. |
| KEGG | mmu:16439. |
Organism-specific databases | |
| CTD | 3709. |
| MGI | MGI:99418. Itpr2. |
Phylogenomic databases | |
| eggNOG | NOG280601. |
| GeneTree | ENSGT00690000102000. |
| HOVERGEN | HBG052158. |
| InParanoid | B2KF91. |
| KO | K04959. |
| OMA | QSAFRIY. |
| OrthoDB | EOG4GQQ42. |
Gene expression databases | |
| ArrayExpress | Q9Z329. |
| Bgee | Q9Z329. |
| CleanEx | MM_ITPR2. |
| Genevestigator | Q9Z329. |
| GermOnline | ENSMUSG00000030287. Mus musculus. |
Family and domain databases | |
| InterPro | IPR000699. Ca-rel_channel. IPR014821. Ins145_P3_rcpt. IPR000493. InsP3_rcpt-bd. IPR005821. Ion_trans_dom. IPR016093. MIR_motif. IPR013662. RIH_assoc-dom. IPR015925. Ryanodine_recept-rel. [Graphical view] |
| PANTHER | PTHR13715. PTHR13715. 1 hit. |
| Pfam | PF08709. Ins145_P3_rec. 1 hit. PF00520. Ion_trans. 1 hit. PF02815. MIR. 1 hit. PF08454. RIH_assoc. 1 hit. PF01365. RYDR_ITPR. 2 hits. [Graphical view] |
| PRINTS | PR00779. INSP3RECEPTR. |
| SMART | SM00472. MIR. 4 hits. [Graphical view] |
| SUPFAM | SSF82109. MIR. 2 hits. |
| PROSITE | PS50919. MIR. 5 hits. [Graphical view] |
| ProtoNet | Search... |
Other | |
| BindingDB | Q9Z329. |
| ChEMBL | CHEMBL2747. |
| ChiTaRS | ITPR2. mouse. |
| NextBio | 289685. |
| SOURCE | Search... |
Entry information
| Entry name | ITPR2_MOUSE | ||||||||
| Accession | Primary (citable) accession number: Q9Z329 Secondary accession number(s): B2KF91 Q8R3B0 | ||||||||
| Entry history |
| ||||||||
| Entry status | Reviewed (UniProtKB/Swiss-Prot) | ||||||||
| Annotation program | Chordata Protein Annotation Program | ||||||||
Relevant documents
| MGD cross-references Mouse Genome Database (MGD) cross-references in UniProtKB/Swiss-Prot |
| SIMILARITY comments Index of protein domains and families |

Clusters with
