The cytoplasmic viral RNA sensors RIG-I and MDA5 are important for the production of type I interferon and other inflammatory cytokines. DDX60 is an uncharacterized DEXD/H box RNA helicase similar to Saccharomyces cerevisiae Ski2, a cofactor of RNA exosome, which is a protein complex required for the integrity of cytoplasmic RNA. Expression of DDX60 increases after viral infection, and the protein localizes at the cytoplasmic region. After viral infection, the DDX60 protein binds to endogenous RIG-I protein. The protein also binds to MDA5 and LGP2 but not to the downstream factors IPS-1 and IκB kinase ε (IKK-ε). Knockdown analysis shows that DDX60 is required for RIG-I- or MDA5-dependent type I interferon and interferon-inducible gene expression in response to viral infection. However, DDX60 is dispensable for TLR3-mediated signaling. Purified DDX60 helicase domains possess the activity to bind to viral RNA and DNA. Expression of DDX60 promotes the binding of RIG-I to double-stranded RNA. Taken together, our analyses indicate that DDX60 is a novel antiviral helicase promoting RIG-I-like receptor-mediated signaling.
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Evidence ID | Analyze ID | Gene/Complex | Systematic Name/Complex Accession | Qualifier | Gene Ontology Term ID | Gene Ontology Term | Aspect | Annotation Extension | Evidence | Method | Source | Assigned On | Reference |
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Evidence ID | Analyze ID | Gene | Gene Systematic Name | Phenotype | Experiment Type | Experiment Type Category | Mutant Information | Strain Background | Chemical | Details | Reference |
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Evidence ID | Analyze ID | Gene | Gene Systematic Name | Disease Ontology Term | Disease Ontology Term ID | Qualifier | Evidence | Method | Source | Assigned On | Reference |
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Evidence ID | Analyze ID | Regulator | Regulator Systematic Name | Target | Target Systematic Name | Direction | Regulation of | Happens During | Regulator Type | Direction | Regulation Of | Happens During | Method | Evidence | Strain Background | Reference |
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Site | Modification | Modifier | Source | Reference |
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Evidence ID | Analyze ID | Interactor | Interactor Systematic Name | Interactor | Interactor Systematic Name | Allele | Assay | Annotation | Action | Phenotype | SGA score | P-value | Source | Reference | Note |
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Evidence ID | Analyze ID | Interactor | Interactor Systematic Name | Interactor | Interactor Systematic Name | Assay | Annotation | Action | Modification | Source | Reference | Note |
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Complement ID | Locus ID | Gene | Species | Gene ID | Strain background | Direction | Details | Source | Reference |
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Evidence ID | Analyze ID | Dataset | Description | Keywords | Number of Conditions | Reference |
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