We have cloned and characterized a Saccharomyces cerevisiae gene YRS1 that complements the phenotype of the mutant sensitive to the anionic drug reveromycin A. The YRS1 gene, which is identical to the recently identified YOR1 gene, encodes a protein with extensive homology to the human multidrug resistance-associated protein (MRP) and the yeast cadmium factor (Ycf1). A chromosomal deletion of YRS1 lead to viable Deltayrs1 cells, which exhibited hypersensitivity to reveromycin A. Elevation of the YRS1 gene dosage in wild type cells conferred increased resistance to reveromycin A. By analyzing the effect of YRS1 disruption and overexpression it was demonstrated that Yrs1 is involved in the detoxification of a wide range of the organic anions that contain carboxyl group(s) but none of the other type of toxic compounds examined. Fluorescence-activated cell sorter analysis indicated the increased accumulation of the anionic fluorescent compound rhodamine B in Deltayrs1 cells. The expression of YRS1 was induced strikingly by reveromycin A. These results suggest that Yrs1 is a multispecific organic anion transporter important for tolerance against toxic environmental organic anions. Yrs1 had an overlapping specificity with Ycf1 in the resistance to cadmium.
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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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