Sensitivity of yeast cells to the bifunctional alkylating agent nitrogen mustard (HN2) depends on two independently operating physiological mechanisms of cellular metabolism: dynamics of uptake of HN2 via choline permease, encoded in the gene HNM1/CTR, and repair of HN2-induced DNA damage. Uptake of choline and HN2 is impaired in mutant alleles of HNM1/CTR, leading to a HN2 hyper-resistant phenotype. Overexpression of HNM1/CTR leads to HN2 sensitivity higher than that of the wild type. While mutation and regulation of HNM1/CTR have pronounced effects on the cell's HN2 sensitivity, they do not interfere with repair of HN2-induced DNA damage, a process whose quality independently determines a yeast cell's sensitivity to HN2. Consequently, HNM1/CTR overexpression in an excision repair-deficient strain leads to extreme HN2 sensitivity whereas a mutational block of HNM1/CTR, in combination with excision proficiency, yields a HN2 hyper-resistant phenotype.
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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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