Source:http://linkedlifedata.com/resource/pubmed/id/17392790
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
7138
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pubmed:dateCreated |
2007-4-19
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pubmed:abstractText |
Retinoic-acid-inducible gene-I (RIG-I; also called DDX58) is a cytosolic viral RNA receptor that interacts with MAVS (also called VISA, IPS-1 or Cardif) to induce type I interferon-mediated host protective innate immunity against viral infection. Furthermore, members of the tripartite motif (TRIM) protein family, which contain a cluster of a RING-finger domain, a B box/coiled-coil domain and a SPRY domain, are involved in various cellular processes, including cell proliferation and antiviral activity. Here we report that the amino-terminal caspase recruitment domains (CARDs) of RIG-I undergo robust ubiquitination induced by TRIM25 in mammalian cells. The carboxy-terminal SPRY domain of TRIM25 interacts with the N-terminal CARDs of RIG-I; this interaction effectively delivers the Lys 63-linked ubiquitin moiety to the N-terminal CARDs of RIG-I, resulting in a marked increase in RIG-I downstream signalling activity. The Lys 172 residue of RIG-I is critical for efficient TRIM25-mediated ubiquitination and for MAVS binding, as well as the ability of RIG-I to induce antiviral signal transduction. Furthermore, gene targeting demonstrates that TRIM25 is essential not only for RIG-I ubiquitination but also for RIG-I-mediated interferon- production and antiviral activity in response to RNA virus infection. Thus, we demonstrate that TRIM25 E3 ubiquitin ligase induces the Lys 63-linked ubiquitination of RIG-I, which is crucial for the cytosolic RIG-I signalling pathway to elicit host antiviral innate immunity.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical |
http://linkedlifedata.com/resource/pubmed/chemical/DEAD-box RNA Helicases,
http://linkedlifedata.com/resource/pubmed/chemical/Interferon-beta,
http://linkedlifedata.com/resource/pubmed/chemical/NF-kappa B,
http://linkedlifedata.com/resource/pubmed/chemical/Ubiquitin,
http://linkedlifedata.com/resource/pubmed/chemical/Ubiquitin-Protein Ligases
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pubmed:status |
MEDLINE
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pubmed:month |
Apr
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pubmed:issn |
1476-4687
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pubmed:author |
pubmed-author:AkiraShizuoS,
pubmed-author:ChenZhijianZ,
pubmed-author:GackMichaela UMU,
pubmed-author:InoueSatoshiS,
pubmed-author:JooChul-HyunCH,
pubmed-author:JungJae UJU,
pubmed-author:LiangChengyuC,
pubmed-author:ShinYoung CYC,
pubmed-author:SunLijunL,
pubmed-author:TakeuchiOsamuO,
pubmed-author:UranoTomohikoT
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pubmed:issnType |
Electronic
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pubmed:day |
19
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pubmed:volume |
446
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
916-920
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pubmed:dateRevised |
2009-11-19
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pubmed:meshHeading |
pubmed-meshheading:17392790-Amino Acid Motifs,
pubmed-meshheading:17392790-Cell Line,
pubmed-meshheading:17392790-DEAD-box RNA Helicases,
pubmed-meshheading:17392790-Humans,
pubmed-meshheading:17392790-Immunity, Innate,
pubmed-meshheading:17392790-Interferon-beta,
pubmed-meshheading:17392790-NF-kappa B,
pubmed-meshheading:17392790-Protein Binding,
pubmed-meshheading:17392790-Protein Structure, Tertiary,
pubmed-meshheading:17392790-RNA Viruses,
pubmed-meshheading:17392790-Signal Transduction,
pubmed-meshheading:17392790-Ubiquitin,
pubmed-meshheading:17392790-Ubiquitin-Protein Ligases
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pubmed:year |
2007
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pubmed:articleTitle |
TRIM25 RING-finger E3 ubiquitin ligase is essential for RIG-I-mediated antiviral activity.
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pubmed:affiliation |
Department of Microbiology and Molecular Genetics and Tumor Virology Division, New England Primate Research Center, Harvard Medical School, 1 Pine Hill Drive, Southborough, Massachusetts 01772, USA.
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pubmed:publicationType |
Letter,
Research Support, Non-U.S. Gov't,
Research Support, N.I.H., Extramural
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