Protein targeting to organelles has been thought to be a very precise process, and proteins that fail to localize correctly are rapidly degraded. Tail-anchored proteins are posttranslationally targeted to the endoplasmic reticulum membrane via guided entry of tail-anchored (TA) proteins pathway. However, these proteins can be mislocalized to the mitochondrial outer membrane. We found that the AAA-ATPase Msp1 on the mitochondrial outer membrane extracts mislocalized TA proteins to the cytosol, passing them to the guided entry of the TA proteins pathway to facilitate their transfer to the endoplasmic reticulum membrane. After the transfer to the endoplasmic reticulum, such TA proteins are directed to degradation if they are recognized by the quality control system on the endoplasmic reticulum. If not recognized, they are retargeted to their original destination along the secretory pathway. Thus, we have identified an intracellular proofreading system that corrects the localization of TA proteins.
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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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