Using a genomic library constructed from Saccharomyces cerevisiae, we have identified a gene GFA1 that confers resistance to methylmercury toxicity. GFA1 encodes L-glutamine:D-fructose-6-phosphate amidotransferase (GFAT) and catalyzes synthesis of glucosamine-6-phosphate. Transformed yeast cells expressing GFA1 demonstrated resistance to methylmercury but no resistance to p-chloromercuribenzoate, a GFAT inhibitor. The cytotoxicity of methylmercury was inhibited by loading excess glucosamine 6-phosphate into yeast. Considering that GFAT is an essential cellular enzyme, our findings suggest that GFAT is the major target molecule of methylmercury in yeasts. This report is the first to identify the target molecule of methylmercury toxicity in eukaryotic cells.
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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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