Recently we have found that the drug amiodarone induces apoptosis in yeast, which is mediated by reactive oxygen species (ROS). Here we have used this finding as a tool to screen for genes involved in the death program. We have described a novel mitochondrial protein, Ysp2, acting in the amiodarone-induced death cascade. After amiodarone addition both the control and amiodarone-resistant ysp2-deleted cells formed ROS, but the mutant (unlike the control) did not undergo the mitochondrial thread-to-grain transition. To test whether the action of Ysp2 is amiodarone-specific we tried to induce PCD by other agents. We have found that acetic acid-induced PCD also depends on Ysp2. We also demonstrate that, like acetic acid, propionic acid or nigericin triggered intracellular acidification causing ROS-dependent death. We suggest that intracellular acidification results in the protonation of superoxide anion (O2-*) to form HO2, one of the most aggressive ROS, which in turn induces Ysp2-mediated PCD.
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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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