A redox reaction involving cysteine thiol-disulfide exchange is crucial for the intracellular monitoring of oxidation status. The yeast transcription factor Yap1 is activated by formation of a disulfide bond, which inhibits nuclear export in response to peroxide stress, with resultant enhancement of the nuclear localization of Yap1. A glutathione peroxidase-like protein, Gpx3, which has peroxiredoxin activity, is required for formation of the disulfide bond in Yap1. We show here that the requirement for Gpx3 in the regulation of Yap1 is strain-specific. Thus, Tsa1, a ubiquitous thioredoxin peroxidase, is required for the activation of Yap1 in yeast strain Y700, which is derived from W303. The strain-specific utilization of different peroxiredoxins appears to be determined by Ybp1, a Yap1-binding protein. The Ybp1 of Y700 has a nonsense mutation, and a wild-type YBP1 gene can restore the Gpx3-dependent activation of Yap1. These results suggest that Tsa1, a ubiquitous peroxiredoxin, has the potential for transducing redox signals to a particular sensor protein.
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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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