Secretory and membrane proteins that fail to fold in the endoplasmic reticulum (ER) are retained and may be sorted for ER-associated degradation (ERAD). During ERAD, ER-associated components such as molecular chaperones and lectins recognize folding intermediates and specific oligosaccharyl modifications on ERAD substrates. Substrates selected for ERAD are then targeted for ubiquitin- and proteasome-mediated degradation. Because the catalytic steps of the ubiquitin-proteasome system reside in the cytoplasm, soluble ERAD substrates that reside in the ER lumen must be retrotranslocated back to the cytoplasm prior to degradation. In contrast, it has been less clear how polytopic, integral membrane substrates are delivered to enzymes required for ubiquitin conjugation and to the proteasome. In this review, we discuss recent studies addressing how ERAD substrates are recognized, ubiquitinated and delivered to the proteasome and then survey current views of how soluble and integral membrane substrates may be retrotranslocated.
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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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