Pradimicin is an antifungal antibiotic which induces apoptosis like cell death in the yeast Saccharomyces cerevisiae. Pradimicin-resistant mutants were isolated from the S. cerevisiae and the mutation points were analyzed. A point mutation of YPD1 that led to a substitution of the 74th glycine (Gly74) to cysteine (Cys) was identified in a mutant strain NH1. In S. cerevisiae, Ypd1 transfers a phosphoryl group from the sensor kinase Slnl to the response regulator Sskl which regulates a downstream MAP kinase in response to hyperosmotic stress. Gly74 is located in a three-residue reverse turn domain that connects two alpha-helices, one of which contains a histidine residue which is phosphorylated. In the reverse turn, glycine (relative position +10 to the active-site histidine) is highly conserved in Ypd1 and other histidine-containing phosphotransfer proteins. It was therefore suggested that the substitution of Gly74 to Cys altered the Ypd1 structure, which resulted in the resistance to pradimicin.
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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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| 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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