Infectious amyloid forms of the release factor, Sup35, comprise the yeast prion [PSI+]. This protein-based unit of inheritance is an evolutionary capacitor able to release cryptic genetic variation during environmental stress and generate potentially beneficial phenotypes. Genetic data have uncovered a sophisticated proteostasis network that tightly regulates [PSI+] formation, propagation and elimination. Central to this network, is the AAA+ ATPase and protein disaggregase, Hsp104. Shifting the balance of the cytosolic Hsp70:Hsp40 chaperone machinery and associated nucleotide exchange factors also influences the [PSI+] prion cycle. Yet, a precise understanding of how these systems co-operate to directly modulate the protein folding events required for sustainable Sup35 prionogenesis has remained elusive. Here, we spotlight recent advances that begin to clarify this issue. We suggest that the Hsp70:Hsp40 chaperone machinery functions collectively as a rheostat that adjusts Hsp104's basic prion-remodeling activities.
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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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