Q9NPQ8 (RIC8A_HUMAN) Reviewed, UniProtKB/Swiss-Prot
Last modified
May 1, 2013.
Version 82.
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: Synembryn-A Alternative name(s): Protein Ric-8A | ||
| Gene names |
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| 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 | 531 AA. |
| Sequence status | Complete. |
| Protein existence | Evidence at protein level |
General annotation (Comments)
| Function | Guanine nucleotide exchange factor (GEF), which can activate some, but not all, G-alpha proteins. Able to activate GNAI1, GNAO1 and GNAQ, but not GNAS by exchanging bound GDP for free GTP. Involved in regulation of microtubule pulling forces during mitotic movement of chromosomes by stimulating G(i)-alpha protein, possibly leading to release G(i)-alpha-GTP and NuMA proteins from the NuMA-GPSM2-G(i)-alpha-GDP complex By similarity. Also acts as an activator for G(q)-alpha (GNAQ) protein by enhancing the G(q)-coupled receptor-mediated ERK activation. Ref.8 |
| Subunit structure | Interacts with GDP-bound G alpha proteins GNAI1, GNAO1 and GNAQ, and with GNA13 with lower affinity. Does not interact with G-alpha proteins when they are in complex with subunits beta and gamma. Interacts (via C-terminus) with RGS14; the interaction stimulates the dissociation of the complex between RGS14 and the active GTP-bound form of GNAI1 By similarity. |
| Subcellular location | Cytoplasm By similarity. Cell membrane By similarity. Note: Colocalizes with RIC8A in CA2 hippocampal neurons. Colocalizes with GNAI1 and RGS14 at the plasma membrane By similarity. |
| Sequence similarities | Belongs to the synembryn family. |
| Sequence caution | The sequence BAB14282.1 differs from that shown. Reason: Erroneous initiation. Translation N-terminally extended. The sequence BAB14282.1 differs from that shown. Reason: Frameshift at position 397. The sequence BAB15653.1 differs from that shown. Reason: Erroneous initiation. Translation N-terminally extended. The sequence BAB55126.1 differs from that shown. Reason: Frameshift at position 48. |
Ontologies
Alternative products
| This entry describes 4 isoforms produced by alternative splicing. [Align] [Select] | ||||||
| Isoform 1 (identifier: Q9NPQ8-1) 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: Q9NPQ8-2) The sequence of this isoform differs from the canonical sequence as follows: 1-44: MEPRAVAEAV...FDDAQQEDRK → MMPNRRTGRW...WWSRSSPCPQ | ||||||
| Isoform 3 (identifier: Q9NPQ8-3) The sequence of this isoform differs from the canonical sequence as follows: 354-354: A → AQGWPPP | ||||||
| Isoform 4 (identifier: Q9NPQ8-4) The sequence of this isoform differs from the canonical sequence as follows: 209-209: Missing. |
Sequence annotation (Features)
| Feature key | Position(s) | Length | Description | Graphical view | Feature identifier | ||||
Molecule processing | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Chain | 1 – 531 | 531 | Synembryn-A | PRO_0000235890 | |||||
Amino acid modifications | |||||||||
| Modified residue | 199 | 1 | Phosphothreonine By similarity | ||||||
| Modified residue | 436 | 1 | Phosphoserine Ref.11 Ref.13 Ref.14 | ||||||
| Modified residue | 441 | 1 | Phosphothreonine Ref.11 Ref.13 Ref.14 | ||||||
| Modified residue | 502 | 1 | Phosphoserine Ref.14 Ref.16 | ||||||
| Modified residue | 523 | 1 | Phosphoserine Ref.11 | ||||||
| Modified residue | 524 | 1 | Phosphoserine Ref.11 | ||||||
| Modified residue | 528 | 1 | Phosphoserine Ref.11 | ||||||
Natural variations | |||||||||
| Alternative sequence | 1 – 44 | 44 | MEPRA…QEDRK → MMPNRRTGRWVLAQGVKGQG RVAPGRRAWWSRSSPCPQ in isoform 2. | VSP_018507 | |||||
| Alternative sequence | 209 | 1 | Missing in isoform 4. | VSP_039849 | |||||
| Alternative sequence | 354 | 1 | A → AQGWPPP in isoform 3. | VSP_018508 | |||||
Experimental info | |||||||||
| Sequence conflict | 48 | 1 | E → V in BAB55126. Ref.2 | ||||||
| Sequence conflict | 405 | 1 | P → L in CAD98025. Ref.4 | ||||||
Sequences
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References
| « Hide 'large scale' references | |
| [1] | "Towards a catalog of human genes and proteins: sequencing and analysis of 500 novel complete protein coding human cDNAs." Wiemann S., Weil B., Wellenreuther R., Gassenhuber J., Glassl S., Ansorge W., Boecher M., Bloecker H., Bauersachs S., Blum H., Lauber J., Duesterhoeft A., Beyer A., Koehrer K., Strack N., Mewes H.-W., Ottenwaelder B., Obermaier B. Poustka A.Genome Res. 11:422-435(2001) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 3). Tissue: Uterus. |
| [2] | "Complete sequencing and characterization of 21,243 full-length human cDNAs." Ota T., Suzuki Y., Nishikawa T., Otsuki T., Sugiyama T., Irie R., Wakamatsu A., Hayashi K., Sato H., Nagai K., Kimura K., Makita H., Sekine M., Obayashi M., Nishi T., Shibahara T., Tanaka T., Ishii S. Sugano S.Nat. Genet. 36:40-45(2004) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 1). Tissue: Teratocarcinoma. |
| [3] | The European IMAGE consortium Submitted (JUL-2000) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 1). |
| [4] | "The full-ORF clone resource of the German cDNA consortium." Bechtel S., Rosenfelder H., Duda A., Schmidt C.P., Ernst U., Wellenreuther R., Mehrle A., Schuster C., Bahr A., Bloecker H., Heubner D., Hoerlein A., Michel G., Wedler H., Koehrer K., Ottenwaelder B., Poustka A., Wiemann S., Schupp I. BMC Genomics 8:399-399(2007) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 2). Tissue: Uterine endothelium. |
| [5] | "Human chromosome 11 DNA sequence and analysis including novel gene identification." Taylor T.D., Noguchi H., Totoki Y., Toyoda A., Kuroki Y., Dewar K., Lloyd C., Itoh T., Takeda T., Kim D.-W., She X., Barlow K.F., Bloom T., Bruford E., Chang J.L., Cuomo C.A., Eichler E., FitzGerald M.G. Sakaki Y.Nature 440:497-500(2006) [PubMed] [Europe PMC] [Abstract] 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] (ISOFORM 4). Tissue: Lymph and Uterus. |
| [7] | "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: IDENTIFICATION BY MASS SPECTROMETRY [LARGE SCALE ANALYSIS]. Tissue: Cervix carcinoma. |
| [8] | "Ric-8A potentiates Gq-mediated signal transduction by acting downstream of G protein-coupled receptor in intact cells." Nishimura A., Okamoto M., Sugawara Y., Mizuno N., Yamauchi J., Itoh H. Genes Cells 11:487-498(2006) [PubMed] [Europe PMC] [Abstract] Cited for: FUNCTION. |
| [9] | "ATM and ATR substrate analysis reveals extensive protein networks responsive to DNA damage." Matsuoka S., Ballif B.A., Smogorzewska A., McDonald E.R. III, Hurov K.E., Luo J., Bakalarski C.E., Zhao Z., Solimini N., Lerenthal Y., Shiloh Y., Gygi S.P., Elledge S.J. Science 316:1160-1166(2007) [PubMed] [Europe PMC] [Abstract] Cited for: IDENTIFICATION BY MASS SPECTROMETRY [LARGE SCALE ANALYSIS]. Tissue: Embryonic kidney. |
| [10] | "Kinase-selective enrichment enables quantitative phosphoproteomics of the kinome across the cell cycle." Daub H., Olsen J.V., Bairlein M., Gnad F., Oppermann F.S., Korner R., Greff Z., Keri G., Stemmann O., Mann M. Mol. Cell 31:438-448(2008) [PubMed] [Europe PMC] [Abstract] Cited for: IDENTIFICATION BY MASS SPECTROMETRY [LARGE SCALE ANALYSIS]. Tissue: Cervix carcinoma. |
| [11] | "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-436; THR-441; SER-523; SER-524 AND SER-528, MASS SPECTROMETRY. Tissue: Cervix carcinoma. |
| [12] | "Large-scale phosphoproteome analysis of human liver tissue by enrichment and fractionation of phosphopeptides with strong anion exchange chromatography." Han G., Ye M., Zhou H., Jiang X., Feng S., Jiang X., Tian R., Wan D., Zou H., Gu J. Proteomics 8:1346-1361(2008) [PubMed] [Europe PMC] [Abstract] Cited for: IDENTIFICATION BY MASS SPECTROMETRY [LARGE SCALE ANALYSIS]. Tissue: Liver. |
| [13] | "Quantitative phosphoproteomic analysis of T cell receptor signaling reveals system-wide modulation of protein-protein interactions." Mayya V., Lundgren D.H., Hwang S.-I., Rezaul K., Wu L., Eng J.K., Rodionov V., Han D.K. Sci. Signal. 2:RA46-RA46(2009) [PubMed] [Europe PMC] [Abstract] Cited for: PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT SER-436 AND THR-441, MASS SPECTROMETRY. Tissue: Leukemic T-cell. |
| [14] | "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-436; THR-441 AND SER-502, MASS SPECTROMETRY. Tissue: Cervix carcinoma. |
| [15] | "Initial characterization of the human central proteome." Burkard T.R., Planyavsky M., Kaupe I., Breitwieser F.P., Buerckstuemmer T., Bennett K.L., Superti-Furga G., Colinge J. BMC Syst. Biol. 5:17-17(2011) [PubMed] [Europe PMC] [Abstract] Cited for: IDENTIFICATION BY MASS SPECTROMETRY [LARGE SCALE ANALYSIS]. |
| [16] | "System-wide temporal characterization of the proteome and phosphoproteome of human embryonic stem cell differentiation." Rigbolt K.T., Prokhorova T.A., Akimov V., Henningsen J., Johansen P.T., Kratchmarova I., Kassem M., Mann M., Olsen J.V., Blagoev B. Sci. Signal. 4:RS3-RS3(2011) [PubMed] [Europe PMC] [Abstract] Cited for: PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT SER-502, MASS SPECTROMETRY. |
| + | Additional computationally mapped references. |
Cross-references
Sequence databases | |
|---|---|
| EMBL GenBank DDBJ | AL136935 mRNA. Translation: CAB66869.1. AK022870 mRNA. Translation: BAB14282.1. Sequence problems. AK027090 mRNA. Translation: BAB15653.1. Different initiation. AK027461 mRNA. Translation: BAB55126.1. Frameshift. AL390088 mRNA. Translation: CAB98211.1. BX538115 mRNA. Translation: CAD98025.1. AC069287 Genomic DNA. No translation available. BC011821 mRNA. Translation: AAH11821.2. BC111499 mRNA. Translation: AAI11500.1. BC121807 mRNA. Translation: AAI21808.1. BC121808 mRNA. Translation: AAI21809.1. |
| IPI | IPI00100106. IPI00746360. IPI00749304. IPI00970851. |
| RefSeq | NP_068751.4. NM_021932.4. |
| UniGene | Hs.592292. |
3D structure databases | |
| ProteinModelPortal | Q9NPQ8. |
| SMR | Q9NPQ8. Positions 373-407. |
| ModBase | Search... |
Protein-protein interaction databases | |
| IntAct | Q9NPQ8. 10 interactions. |
| MINT | MINT-1422193. |
PTM databases | |
| PhosphoSite | Q9NPQ8. |
Polymorphism databases | |
| DMDM | 308153562. |
Proteomic databases | |
| PaxDb | Q9NPQ8. |
| PRIDE | Q9NPQ8. |
Protocols and materials databases | |
| DNASU | 60626. |
| StructuralBiologyKnowledgebase | Search... |
Genome annotation databases | |
| Ensembl | ENST00000325207; ENSP00000325941; ENSG00000177963. ENST00000526104; ENSP00000432008; ENSG00000177963. ENST00000527696; ENSP00000434833; ENSG00000177963. |
| GeneID | 60626. |
| KEGG | hsa:60626. |
| UCSC | uc001lof.3. human. uc001log.3. human. uc001loh.3. human. |
Organism-specific databases | |
| CTD | 60626. |
| GeneCards | GC11P000200. |
| HGNC | HGNC:29550. RIC8A. |
| HPA | CAB046012. HPA041491. |
| MIM | 609146. gene. |
| neXtProt | NX_Q9NPQ8. |
| PharmGKB | PA142671067. |
| GenAtlas | Search... |
Phylogenomic databases | |
| eggNOG | NOG322219. |
| HOVERGEN | HBG054867. |
| InParanoid | Q9NPQ8. |
| OMA | LHQTHRL. |
| OrthoDB | EOG40CHGV. |
Gene expression databases | |
| ArrayExpress | Q9NPQ8. |
| Bgee | Q9NPQ8. |
| Genevestigator | Q9NPQ8. |
| GermOnline | ENSG00000177963. Homo sapiens. |
Family and domain databases | |
| Gene3D | 1.25.10.10. 2 hits. |
| InterPro | IPR011989. ARM-like. IPR016024. ARM-type_fold. IPR019318. Gua_nucleotide_exch_fac_Ric8. IPR008376. Synembryn. [Graphical view] |
| Pfam | PF10165. Ric8. 1 hit. [Graphical view] |
| PRINTS | PR01802. SYNEMBRYN. |
| SUPFAM | SSF48371. ARM-type_fold. 1 hit. |
| ProtoNet | Search... |
Other | |
| ChiTaRS | RIC8A. human. |
| GenomeRNAi | 60626. |
| NextBio | 65465. |
| SOURCE | Search... |
Entry information
| Entry name | RIC8A_HUMAN | ||||||||
| Accession | Primary (citable) accession number: Q9NPQ8 Secondary accession number(s): Q0P508 Q9H9E7 | ||||||||
| Entry history |
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| 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 11 Human chromosome 11: entries, gene names and cross-references to MIM |
| 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
