The heterologous overexpression states of prion proteins play a critical role in understanding the mechanisms of prion-related diseases. We report herein the identification of soluble monomer and complex states for a bakers' yeast prion, Sup35, when expressed in Escherichia coli. Two peaks are apparent with the elution of His-tagged Sup35 by imidazole from a Ni2+ affinity column. Peak I contains Sup35 in both monomer and aggregated states. Sup35 aggregate is abbreviated as C-aggregate and includes a non-fibril complex comprising Sup35 aggregate-HSP90-Dna K, ATP synthase β unit (chain D), 30S ribosome subunit, and Omp F. The purified monomer and C-aggregate can remain stable for an extended period of time. Peak II contains Sup35 also in both monomer and aggregated (abbreviated as S-aggregate) states, but the aggregated states are caused by the formation of inter-Sup35 disulfide bonds. This study demonstrates that further assembly of Sup35 non-fibril C-aggregate can be interrupted by the chaperone repertoire system in E. coli.
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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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