Heat-shock protein 104 (Hsp104) and caseinolytic peptidase B (ClpB), members of the AAA+ superfamily, are molecular machines involved in disaggregating insoluble protein aggregates, a process not long ago thought to be impossible. During extreme stress they are essential for cell survival. In addition, Hsp104 regulates prion assembly and disassembly. For most of their protein remodeling activities Hsp104 and ClpB work in collaboration with the Hsp70 or DnaK chaperone systems. Together, the two chaperones catalyze protein disaggregation and reactivation by a mechanism probably involving the extraction of polypeptides from aggregates by forced unfolding and translocation through the Hsp104/ClpB central cavity. The polypeptides are then released back into the cellular milieu for spontaneous or chaperone-mediated refolding.
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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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