Yeast strain deleted for the YFH1 gene, which encodes the orthologue of human frataxin, accumulates iron in mitochondria, constitutively activates the high-affinity iron import system in the plasma membrane, and is sensitive to high iron media. We have performed a genetic screen for mutants of a yfh1 deleted strain with increased resistance to high levels of iron. One of the identified mutations caused the deletion of the hypervariable C-terminal region of Ras2p GTPase. The effect of ras2 mutation on the growth of yfh1 null strain was masked by the addition of caffeine. We found that the ras2 mutation does not alter the expression of the iron regulon nor prevent mitochondrial iron accumulation in a yfh1 mutant context. The double yfh1 ras2 mutant has increased mRNA levels of CIT2 gene and augmented catalase activity.
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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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