Members of the ATP binding cassette (ABC) protein superfamily transport a variety of substances across biological membranes, including drugs, ions, and peptides. The yeast cadmium factor (YCF1) gene from Saccharomyces cerevisiae is required for cadmium resistance and encodes a 1,515 amino acid protein with extensive homology to both the human multidrug resistance-associated protein (MRP1) and the cystic fibrosis transmembrane conductance regulator (hCFTR). S. cerevisiae cells harboring a deletion of the YCF1 gene are hypersensitive to cadmium compared with wild type cells. Mutagenesis experiments demonstrate that conserved amino acid residues, functionally critical in hCFTR, play a vital role in YCF1-mediated cadmium resistance. Mutagenesis of phenylalanine 713 in the YCF1 nucleotide binding fold 1, which correlates with the delta F508 mutation found in the most common form of cystic fibrosis, completely abolished YCF1 function in cadmium detoxification. Furthermore, substitution of a serine to alanine residue in a potential protein kinase A phosphorylation site in a central region of YCF1, which displays sequence similarity to the central regulatory domain of hCFTR, also rendered YCF1 nonfunctional. These results suggest that YCF1 is composed of modular domains found in human proteins which function in drug and ion transport.
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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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