Mechanistic understanding of mammalian mRNA turnover remains incomplete. We demonstrate that the 3' to 5' exoribonuclease decay pathway is a major contributor to mRNA decay both in cells and in cell extract. An exoribonuclease-dependent scavenger decapping activity was identified that follows decay of the mRNA and hydrolyzes the residual cap. The decapping activity is associated with a subset of the exosome proteins in vivo, implying a higher-order degradation complex consisting of exoribonucleases and a decapping activity, which together coordinate the decay of an mRNA. These findings indicate that following deadenylation of mammal mRNA, degradation proceeds by a coupled 3' to 5' exoribonucleolytic activity and subsequent hydrolysis of the cap structure by a scavenger decapping activity.
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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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