The Saccharomyces cerevisiae AP-1 protein (yAP-1) is a key mediator of oxidative stress tolerance. Transcriptional activation by yAP-1 has been shown to be inducible by exposure of cells to H2O2 and diamide, among other oxidative stress eliciting compounds. Here we define the segments of the yAP-1 protein that are required to respond to this environmental challenge. Western blotting analyses indicated that levels of yAP-1 do not change during oxidative stress. Deletion mutagenesis and gene fusion experiments indicate that two different segments of yAP-1 are required for oxidative stress inducibility. These two domains function differentially depending on the type of oxidant used to generate oxidative stress. Three repeated cysteine-serine-glutamate sequences located in the carboxyl terminus are required for normal regulation of yAP-1 function during oxidative stress. Replacement of these cysteine-serine-glutamate repeats by alanine residues does not similarly affect H2O2 and diamide regulation of yAP-1 function. While yAP-1 transactivation is enhanced by exposure to either H2O2 or diamide, the protein responds to the oxidative stress produced by these compounds in nonidentical ways.
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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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