RIG-I

DDX58
Available structures
PDBOrtholog search: PDBe RCSB
Identifiers
AliasesDDX58, DEAD (Asp-Glu-Ala-Asp) box polypeptide 58, RIGI, RLR-1, SGMRT2, RIG-I, DEXD/H-box helicase 58
External IDsMGI: 2442858 HomoloGene: 32215 GeneCards: DDX58
Gene location (Human)
Chr.Chromosome 9 (human)[1]
BandNo data availableStart32,455,705 bp[1]
End32,526,324 bp[1]
RNA expression pattern
More reference expression data
Orthologs
SpeciesHumanMouse
Entrez

23586

230073

Ensembl

ENSG00000107201

ENSMUSG00000040296

UniProt

O95786

Q6Q899

RefSeq (mRNA)

NM_014314

NM_172689

RefSeq (protein)

NP_055129

NP_766277

Location (UCSC)Chr 9: 32.46 – 32.53 MbChr 9: 40.2 – 40.24 Mb
PubMed search[3][4]
Wikidata
View/Edit HumanView/Edit Mouse

RIG-I (retinoic acid-inducible gene I) is a RIG-I-like receptor dsRNA helicase enzyme that is encoded (in humans) by the DDX58 gene. RIG-I is part of the RIG-I-like receptor family, which also includes MDA5 and LGP2, and functions as a pattern recognition receptor that is a sensor for viruses such as influenza A, Sendai virus, and flavivirus. Certain retroviruses, such as HIV-1, encode a protease that directs RIG-I to the lysosome for degradation, and thereby evade RIG-I mediated signaling.[5] RIG-I typically recognizes short (< 4000nt) 5′ triphosphate uncapped double stranded or single stranded RNA.[6][7][8] RIG-I and MDA5 are involved in activating MAVS and triggering an antiviral response.[9] RIG-I is also able to detect non-self 5′-triphosphorylated dsRNA transcribed from AT-rich dsDNA by DNA-dependent RNA polymerase III (Pol III). For many viruses, effective RIG-I-mediated antiviral responses are dependent on functionally active LGP2.[10]

Function

DEAD box proteins, characterized by the conserved motif Asp-Glu-Ala-Asp (DEAD), are putative RNA helicases which are implicated in a number of cellular processes involving RNA binding and alteration of RNA secondary structure. RIG-I contains a RNA helicase-DEAD box motifs and a caspase recruitment domain (CARD). RIG-I is involved in viral double-stranded (ds) RNA recognition and the regulation of immune response.[11]

References

  1. 1 2 3 GRCh38: Ensembl release 89: ENSG00000107201 - Ensembl, May 2017
  2. 1 2 3 GRCm38: Ensembl release 89: ENSMUSG00000040296 - Ensembl, May 2017
  3. ↑ "Human PubMed Reference:".
  4. ↑ "Mouse PubMed Reference:".
  5. ↑ Solis M, Nakhaei P, Jalalirad M, Lacoste J, Douville R, Arguello M, Zhao T, Laughrea M, Wainberg MA, Hiscott J (Feb 2011). "RIG-I-mediated antiviral signaling is inhibited in HIV-1 infection by a protease-mediated sequestration of RIG-I". Journal of Virology. 85 (3): 1224–36. PMC 3020501 Freely accessible. PMID 21084468. doi:10.1128/JVI.01635-10.
  6. ↑ Pichlmair A, Schulz O, Tan CP, Näslund TI, Liljeström P, Weber F, Reis e Sousa C (Nov 2006). "RIG-I-mediated antiviral responses to single-stranded RNA bearing 5'-phosphates". Science. 314 (5801): 997–1001. PMID 17038589. doi:10.1126/science.1132998.
  7. ↑ Yoneyama M, Kikuchi M, Natsukawa T, Shinobu N, Imaizumi T, Miyagishi M, Taira K, Akira S, Fujita T (Jul 2004). "The RNA helicase RIG-I has an essential function in double-stranded RNA-induced innate antiviral responses". Nature Immunology. 5 (7): 730–7. PMID 15208624. doi:10.1038/ni1087.
  8. ↑ Kato H, Takeuchi O, Mikamo-Satoh E, Hirai R, Kawai T, Matsushita K, Hiiragi A, Dermody TS, Fujita T, Akira S (Jul 2008). "Length-dependent recognition of double-stranded ribonucleic acids by retinoic acid-inducible gene-I and melanoma differentiation-associated gene 5". The Journal of Experimental Medicine. 205 (7): 1601–10. PMC 2442638 Freely accessible. PMID 18591409. doi:10.1084/jem.20080091.
  9. ↑ Hou F, Sun L, Zheng H, Skaug B, Jiang QX, Chen ZJ (Aug 2011). "MAVS forms functional prion-like aggregates to activate and propagate antiviral innate immune response". Cell. 146 (3): 448–61. PMC 3179916 Freely accessible. PMID 21782231. doi:10.1016/j.cell.2011.06.041.
  10. ↑ Satoh T, Kato H, Kumagai Y, Yoneyama M, Sato S, Matsushita K, Tsujimura T, Fujita T, Akira S, Takeuchi O (Jan 2010). "LGP2 is a positive regulator of RIG-I- and MDA5-mediated antiviral responses". Proceedings of the National Academy of Sciences of the United States of America. 107 (4): 1512–7. PMC 2824407 Freely accessible. PMID 20080593. doi:10.1073/pnas.0912986107.
  11. ↑ "Entrez Gene: DDX58 DEAD (Asp-Glu-Ala-Asp) box polypeptide 58".

Further reading

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