Q14643 (ITPR1_HUMAN) Reviewed, UniProtKB/Swiss-Prot
Last modified
May 1, 2013.
Version 148.
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 1 Alternative name(s): IP3 receptor isoform 1 Short name=IP3R 1 Short name=InsP3R1 Type 1 inositol 1,4,5-trisphosphate receptor Short name=Type 1 InsP3 receptor | ||||
| Gene names |
| ||||
| Organism | Homo sapiens (Human) [Reference proteome] | ||||
| Taxonomic identifier | 9606 [NCBI] | ||||
| Taxonomic lineage | Eukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Euarchontoglires › Primates › Haplorrhini › Catarrhini › Hominidae › Homo![]() |
Protein attributes
| Sequence length | 2758 AA. |
| Sequence status | Complete. |
| Protein existence | Evidence at protein level |
General annotation (Comments)
| Function | Intracellular channel that mediates calcium release from the endoplasmic reticulum following stimulation by inositol 1,4,5-trisphosphate. Plays a role in ER stress-induced apoptosis. Cytoplasmic calcium released from the ER triggers apoptosis by the activation of CaM kinase II, eventually leading to the activation of downstream apoptosis pathways By similarity. |
| Subunit structure | Homotetramer. Interacts with TRPC4. The PPXXF motif binds HOM1, HOM2 and HOM3. Interacts with RYR1, RYR2, ITPR1, SHANK1 and SHANK3. Interacts with ERP44 in a pH-, redox state- and calcium-dependent manner which results in the inhibition the calcium channel activity. The strength of this interaction inversely correlates with calcium concentration. Part of cGMP kinase signaling complex at least composed of ACTA2/alpha-actin, CNN1/calponin H1, PLN/phospholamban, PRKG1 and ITPR1. Interacts with AHCYL1 By similarity. Interacts with MRVI1 and CABP1 (via N-terminus). Ref.7 Ref.8 Ref.9 Ref.11 |
| Subcellular location | Endoplasmic reticulum membrane; Multi-pass membrane protein. |
| Tissue specificity | Widely expressed. |
| 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 | Phosphorylated by cAMP kinase. Phosphorylation prevents the ligand-induced opening of the calcium channels By similarity. Ref.2 Phosphorylated on tyrosine residues. Ref.2 Ubiquitination at multiple lysines targets ITPR1 for proteasomal degradation. Approximately 40% of the ITPR1-associated ubiquitin is monoubiquitin, and polyubiquitins are both 'Lys-48'- and 'Lys-63'-linked By similarity. |
| Involvement in disease | Spinocerebellar ataxia 15 (SCA15) [MIM:606658]: Spinocerebellar ataxia is a clinically and genetically heterogeneous group of cerebellar disorders. Patients show progressive incoordination of gait and often poor coordination of hands, speech and eye movements, due to degeneration of the cerebellum with variable involvement of the brainstem and spinal cord. SCA15 is an autosomal dominant cerebellar ataxia (ADCA). It is very slow progressing form with a wide range of onset, ranging from childhood to adult. Most patients remain ambulatory. |
| Miscellaneous | Calcium appears to inhibit ligand binding to the receptor, most probably by interacting with a distinct calcium-binding protein which then inhibits the receptor. |
| Sequence similarities | Belongs to the InsP3 receptor family. Contains 5 MIR domains. |
| Caution | Alternative splice sites (AA 1053-1054) represent a non-canonical GA-AG donor-acceptor pair, but are well-supported by all available human transcripts, and by homologous transcripts in mouse, rat and cow. |
Ontologies
Alternative products
| This entry describes 8 isoforms produced by alternative splicing. [Align] [Select] Note: There is a combination of three alternatively spliced domains at site SI, SIII and site SII (A and C). Experimental confirmation may be lacking for some isoforms. | ||||||
| Isoform 1 (identifier: Q14643-1) Also known as: SISIIISIIAC; 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: Q14643-2) Also known as: SI-SIIISIIAC; The sequence of this isoform differs from the canonical sequence as follows: 322-336: Missing. | ||||||
| Isoform 3 (identifier: Q14643-3) Also known as: SISIII-SII; The sequence of this isoform differs from the canonical sequence as follows: 919-927: Missing. 1702-1725: Missing. 1726-1740: Missing. | ||||||
| Isoform 4 (identifier: Q14643-4) Also known as: SI-SIII-SII; The sequence of this isoform differs from the canonical sequence as follows: 322-336: Missing. 919-927: Missing. 1702-1725: Missing. 1726-1740: Missing. | ||||||
| Isoform 5 (identifier: Q14643-5) Also known as: SI-SIII-SIIAC; The sequence of this isoform differs from the canonical sequence as follows: 322-336: Missing. 919-927: Missing. | ||||||
| Isoform 6 (identifier: Q14643-6) Also known as: SISIIISIIA; The sequence of this isoform differs from the canonical sequence as follows: 1726-1740: Missing. | ||||||
| Isoform 7 (identifier: Q14643-7) Also known as: SI-SIII-SIIA; The sequence of this isoform differs from the canonical sequence as follows: 322-336: Missing. 1726-1740: Missing. | ||||||
| Isoform 8 (identifier: Q14643-8) Also known as: SI-SIII-SIIA; The sequence of this isoform differs from the canonical sequence as follows: 322-336: Missing. 919-927: Missing. 1726-1740: Missing. |
Sequence annotation (Features)
| Feature key | Position(s) | Length | Description | Graphical view | Feature identifier | ||||
Molecule processing | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Chain | 1 – 2758 | 2758 | Inositol 1,4,5-trisphosphate receptor type 1 | PRO_0000153920 | |||||
Regions | |||||||||
| Topological domain | 1 – 2282 | 2282 | Cytoplasmic Potential | ||||||
| Transmembrane | 2283 – 2303 | 21 | Helical; Potential | ||||||
| Topological domain | 2304 – 2314 | 11 | Lumenal Potential | ||||||
| Transmembrane | 2315 – 2335 | 21 | Helical; Potential | ||||||
| Topological domain | 2336 – 2361 | 26 | Cytoplasmic Potential | ||||||
| Transmembrane | 2362 – 2382 | 21 | Helical; Potential | ||||||
| Topological domain | 2383 – 2405 | 23 | Lumenal Potential | ||||||
| Transmembrane | 2406 – 2426 | 21 | Helical; Potential | ||||||
| Topological domain | 2427 – 2448 | 22 | Cytoplasmic Potential | ||||||
| Transmembrane | 2449 – 2469 | 21 | Helical; Potential | ||||||
| Topological domain | 2470 – 2577 | 108 | Lumenal Potential | ||||||
| Transmembrane | 2578 – 2598 | 21 | Helical; Potential | ||||||
| Topological domain | 2599 – 2758 | 160 | Cytoplasmic Potential | ||||||
| Domain | 112 – 166 | 55 | MIR 1 | ||||||
| Domain | 173 – 223 | 51 | MIR 2 | ||||||
| Domain | 231 – 287 | 57 | MIR 3 | ||||||
| Domain | 294 – 373 | 80 | MIR 4 | ||||||
| Domain | 379 – 435 | 57 | MIR 5 | ||||||
| Region | 265 – 269 | 5 | Inositol 1,4,5-trisphosphate binding By similarity | ||||||
| Region | 508 – 511 | 4 | Inositol 1,4,5-trisphosphate binding By similarity | ||||||
| Region | 567 – 569 | 3 | Inositol 1,4,5-trisphosphate binding By similarity | ||||||
| Region | 2472 – 2537 | 66 | Interaction with ERP44 By similarity | ||||||
Amino acid modifications | |||||||||
| Modified residue | 482 | 1 | Phosphotyrosine Potential | ||||||
| Modified residue | 1598 | 1 | Phosphoserine Ref.10 Ref.13 Ref.15 | ||||||
| Modified residue | 1764 | 1 | Phosphoserine Ref.13 | ||||||
| Modified residue | 2664 | 1 | Phosphotyrosine Potential | ||||||
| Glycosylation | 2512 | 1 | N-linked (GlcNAc...) Ref.14 | ||||||
| Cross-link | 917 | Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in ubiquitin) By similarity | |||||||
| Cross-link | 972 | Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in ubiquitin) By similarity | |||||||
| Cross-link | 1581 | Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in ubiquitin) By similarity | |||||||
| Cross-link | 1780 | Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in ubiquitin) By similarity | |||||||
| Cross-link | 1893 | Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in ubiquitin) By similarity | |||||||
| Cross-link | 1894 | Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in ubiquitin) By similarity | |||||||
| Cross-link | 1895 | Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in ubiquitin) By similarity | |||||||
| Cross-link | 1910 | Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in ubiquitin) By similarity | |||||||
| Cross-link | 1933 | Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in ubiquitin) By similarity | |||||||
| Cross-link | 2127 | Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in ubiquitin) By similarity | |||||||
| Cross-link | 2266 | Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in ubiquitin) By similarity | |||||||
Natural variations | |||||||||
| Alternative sequence | 322 – 336 | 15 | Missing in isoform 2, isoform 4, isoform 5, isoform 7 and isoform 8. | VSP_002687 | |||||
| Alternative sequence | 919 – 927 | 9 | Missing in isoform 3, isoform 4, isoform 5 and isoform 8. | VSP_002688 | |||||
| Alternative sequence | 1702 – 1725 | 24 | Missing in isoform 3 and isoform 4. | VSP_002689 | |||||
| Alternative sequence | 1726 – 1740 | 15 | Missing in isoform 3, isoform 4, isoform 6, isoform 7 and isoform 8. | VSP_002690 | |||||
| Natural variant | 769 | 1 | M → V. Corresponds to variant rs35789999 [ dbSNP | Ensembl ]. | VAR_037005 | |||||
| Natural variant | 1430 | 1 | I → V. Corresponds to variant rs3749383 [ dbSNP | Ensembl ]. | VAR_037006 | |||||
Experimental info | |||||||||
| Sequence conflict | 1557 – 1581 | 25 | AIAIP…SIVQK → HCHSRGPGQPSQQPLSQVPQ HCAE in AAD14386. Ref.6 | ||||||
| Sequence conflict | 1722 | 1 | S → A in U23850. Ref.4 | ||||||
| Sequence conflict | 2302 | 1 | F → L in AAB04947. Ref.2 | ||||||
| Sequence conflict | 2305 | 1 | F → L in AAB04947. Ref.2 | ||||||
| Sequence conflict | 2448 | 1 | S → A in U23850. Ref.4 | ||||||
Sequences
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References
| « Hide 'large scale' references | |
| [1] | "Human inositol 1,4,5-trisphosphate type-1 receptor, InsP3R1: structure, function, regulation of expression and chromosomal localization." Yamada N., Makino Y., Clark R.A., Pearson D.W., Mattei M.-G., Guenet J.-L., Ohama E., Fujino I., Miyawaki A., Furuichi T., Mikoshiba K. Biochem. J. 302:781-790(1994) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 4). Tissue: Myeloid and Uterus. |
| [2] | "The human type 1 inositol 1,4,5-trisphosphate receptor from T lymphocytes. Structure, localization, and tyrosine phosphorylation." Harnick D.J., Jayaraman T., Ma Y., Mulieri P., Go L.O., Marks A.R. J. Biol. Chem. 270:2833-2840(1995) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 3), PHOSPHORYLATION. Tissue: T-cell. |
| [3] | Marks A. Submitted (APR-2004) to the EMBL/GenBank/DDBJ databases Cited for: SEQUENCE REVISION TO 431; 1012-1017; 1460; 1823; 2324; 2330; 2334; 2337; 2346; 2358; 2361; 2372; 2396; 2418; 2426; 2434 AND 2741. |
| [4] | "Molecular cloning of a cDNA for the human inositol 1,4,5-trisphosphate receptor type 1, and the identification of a third alternatively spliced variant." Nucifora F.C. Jr., Li S.-H., Danoff S., Ullrich A., Ross C.A. Brain Res. Mol. Brain Res. 32:291-296(1995) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 2), ALTERNATIVE SPLICING. Tissue: Brain. |
| [5] | "The DNA sequence, annotation and analysis of human chromosome 3." Muzny D.M., Scherer S.E., Kaul R., Wang J., Yu J., Sudbrak R., Buhay C.J., Chen R., Cree A., Ding Y., Dugan-Rocha S., Gill R., Gunaratne P., Harris R.A., Hawes A.C., Hernandez J., Hodgson A.V., Hume J. Gibbs R.A.Nature 440:1194-1198(2006) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. |
| [6] | "Induction of inositol 1,4,5 trisphosphate receptor genes by ionizing radiation." Yan J., Khanna K.K., Lavin M.F. Int. J. Radiat. Biol. 69:539-546(1996) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] OF 1548-1723 (ISOFORMS 3 AND 4). |
| [7] | "Identification of a family of calcium sensors as protein ligands of inositol trisphosphate receptor Ca(2+) release channels." Yang J., McBride S., Mak D.-O.D., Vardi N., Palczewski K., Haeseleer F., Foskett J.K. Proc. Natl. Acad. Sci. U.S.A. 99:7711-7716(2002) [PubMed] [Europe PMC] [Abstract] Cited for: INTERACTION WITH CABP1. |
| [8] | "Regulation of InsP3 receptor activity by neuronal Ca2+-binding proteins." Kasri N.N., Holmes A.M., Bultynck G., Parys J.B., Bootman M.D., Rietdorf K., Missiaen L., McDonald F., De Smedt H., Conway S.J., Holmes A.B., Berridge M.J., Roderick H.L. EMBO J. 23:312-321(2004) [PubMed] [Europe PMC] [Abstract] Cited for: INTERACTION WITH CABP1. |
| [9] | "Subtype-specific and ER lumenal environment-dependent regulation of inositol 1,4,5-trisphosphate receptor type 1 by ERp44." Higo T., Hattori M., Nakamura T., Natsume T., Michikawa T., Mikoshiba K. Cell 120:85-98(2005) [PubMed] [Europe PMC] [Abstract] Cited for: INTERACTION WITH ERP44. |
| [10] | "Global, in vivo, and site-specific phosphorylation dynamics in signaling networks." Olsen J.V., Blagoev B., Gnad F., Macek B., Kumar C., Mortensen P., Mann M. Cell 127:635-648(2006) [PubMed] [Europe PMC] [Abstract] Cited for: PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT SER-1598, MASS SPECTROMETRY. Tissue: Cervix carcinoma. |
| [11] | "IRAG mediates NO/cGMP-dependent inhibition of platelet aggregation and thrombus formation." Antl M., von Bruehl M.-L., Eiglsperger C., Werner M., Konrad I., Kocher T., Wilm M., Hofmann F., Massberg S., Schlossmann J. Blood 109:552-559(2007) [PubMed] [Europe PMC] [Abstract] Cited for: INTERACTION WITH MRVI1. |
| [12] | "Deletion at ITPR1 underlies ataxia in mice and spinocerebellar ataxia 15 in humans." van de Leemput J., Chandran J., Knight M.A., Holtzclaw L.A., Scholz S., Cookson M.R., Houlden H., Gwinn-Hardy K., Fung H.-C., Lin X., Hernandez D., Simon-Sanchez J., Wood N.W., Giunti P., Rafferty I., Hardy J., Storey E., Gardner R.J.M. Singleton A.B.PLoS Genet. 3:1076-1082(2007) [PubMed] [Europe PMC] [Abstract] Cited for: INVOLVEMENT IN SCA15. |
| [13] | "A quantitative atlas of mitotic phosphorylation." Dephoure N., Zhou C., Villen J., Beausoleil S.A., Bakalarski C.E., Elledge S.J., Gygi S.P. Proc. Natl. Acad. Sci. U.S.A. 105:10762-10767(2008) [PubMed] [Europe PMC] [Abstract] Cited for: PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT SER-1598 AND SER-1764, MASS SPECTROMETRY. Tissue: Cervix carcinoma. |
| [14] | "Glycoproteomics analysis of human liver tissue by combination of multiple enzyme digestion and hydrazide chemistry." Chen R., Jiang X., Sun D., Han G., Wang F., Ye M., Wang L., Zou H. J. Proteome Res. 8:651-661(2009) [PubMed] [Europe PMC] [Abstract] Cited for: GLYCOSYLATION [LARGE SCALE ANALYSIS] AT ASN-2512, MASS SPECTROMETRY. Tissue: Liver. |
| [15] | "Quantitative phosphoproteomics reveals widespread full phosphorylation site occupancy during mitosis." Olsen J.V., Vermeulen M., Santamaria A., Kumar C., Miller M.L., Jensen L.J., Gnad F., Cox J., Jensen T.S., Nigg E.A., Brunak S., Mann M. Sci. Signal. 3:RA3-RA3(2010) [PubMed] [Europe PMC] [Abstract] Cited for: PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT SER-1598, MASS SPECTROMETRY. Tissue: Cervix carcinoma. |
| + | Additional computationally mapped references. |
Cross-references
Sequence databases | |
|---|---|
| EMBL GenBank DDBJ | D26070 mRNA. Translation: BAA05065.1. L38019 mRNA. Translation: AAB04947.2. U23850 mRNA. No translation available. AC018816 Genomic DNA. No translation available. AC024168 Genomic DNA. No translation available. AC069248 Genomic DNA. No translation available. AC090944 Genomic DNA. No translation available. S82269 mRNA. Translation: AAD14386.1. |
| IPI | IPI00218658. IPI00218659. IPI00218660. IPI00218661. IPI00218662. IPI00218664. IPI00333753. IPI00925443. |
| PIR | A55713. S54974. |
| RefSeq | NP_001093422.2. NM_001099952.2. NP_002213.5. NM_002222.5. |
| UniGene | Hs.567295. Hs.715765. |
3D structure databases | |
| ProteinModelPortal | Q14643. |
| ModBase | Search... |
Protein-protein interaction databases | |
| DIP | DIP-29714N. |
| IntAct | Q14643. 3 interactions. |
| STRING | 9606.ENSP00000405934. |
PTM databases | |
| PhosphoSite | Q14643. |
Polymorphism databases | |
| DMDM | 17366467. |
Proteomic databases | |
| PaxDb | Q14643. |
| PRIDE | Q14643. |
Protocols and materials databases | |
| StructuralBiologyKnowledgebase | Search... |
Genome annotation databases | |
| Ensembl | ENST00000357086; ENSP00000349597; ENSG00000150995. ENST00000456211; ENSP00000397885; ENSG00000150995. |
| GeneID | 3708. |
| KEGG | hsa:3708. |
| UCSC | uc021wsi.1. human. uc021wsj.1. human. |
Organism-specific databases | |
| CTD | 3708. |
| GeneCards | GC03P004486. |
| HGNC | HGNC:6180. ITPR1. |
| HPA | HPA014765. HPA016487. |
| MIM | 147265. gene. 606658. phenotype. |
| neXtProt | NX_Q14643. |
| Orphanet | 98769. Spinocerebellar ataxia type 15. 98770. Spinocerebellar ataxia type 16. |
| PharmGKB | PA29978. |
| GenAtlas | Search... |
Phylogenomic databases | |
| eggNOG | NOG280601. |
| HOGENOM | HOG000007660. |
| HOVERGEN | HBG052158. |
| InParanoid | Q14643. |
| KO | K04958. |
Enzyme and pathway databases | |
| Reactome | REACT_111102. Signal Transduction. REACT_111217. Metabolism. REACT_116125. Disease. REACT_604. Hemostasis. REACT_6900. Immune System. |
Gene expression databases | |
| ArrayExpress | Q14643. |
| Bgee | Q14643. |
| CleanEx | HS_ITPR1. |
| Genevestigator | Q14643. |
| GermOnline | ENSG00000150995. Homo sapiens. |
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 | Q14643. |
| ChEMBL | CHEMBL4046. |
| ChiTaRS | ITPR1. human. |
| GenomeRNAi | 3708. |
| NextBio | 14533. |
| SOURCE | Search... |
Entry information
| Entry name | ITPR1_HUMAN | ||||||||
| Accession | Primary (citable) accession number: Q14643 Secondary accession number(s): Q14660, Q99897 | ||||||||
| Entry history |
| ||||||||
| Entry status | Reviewed (UniProtKB/Swiss-Prot) | ||||||||
| Annotation program | Chordata Protein Annotation Program | ||||||||
| Disclaimer | Any medical or genetic information present in this entry is provided for research, educational and informational purposes only. It is not in any way intended to be used as a substitute for professional medical advice, diagnosis, treatment or care. | ||||||||
Relevant documents
| Human chromosome 3 Human chromosome 3: entries, gene names and cross-references to MIM |
| Human entries with polymorphisms or disease mutations List of human entries with polymorphisms or disease mutations |
| Human polymorphisms and disease mutations Index of human polymorphisms and disease mutations |
| MIM cross-references Online Mendelian Inheritance in Man (MIM) cross-references in UniProtKB/Swiss-Prot |
| SIMILARITY comments Index of protein domains and families |

Clusters with
