Deoxycytidylate deaminase activity in Saccharomyces cerevisiae has been partially characterized. The yeast enzyme was found to exhibit properties similar to those of dCMP deaminases isolated from higher eucaryotes. A mutant strain completely deficient in dCMP deaminase activity was isolated by selection for resistance to 5-fluoro-2'-deoxycytidylate followed by screening for cross sensitivity to 5-fluoro-2'-deoxyuridylate, a potent inhibitor of the yeast thymidylate synthetase. We have designated this new allele dcd1 . A strain exhibiting an auxotrophic requirement for dUMP was isolated after mutagenesis of a dcd1 tup7 haploid. Genetic analysis revealed that this auxotrophic phenotype resulted from a combination of the dcd1 allele and a second, unlinked, nuclear mutation that we designated dmp1 . This allele, which by itself conveys no readily discernible phenotype, presumably impairs efficient synthesis of dUMP from UDP. The auxotrophic requirement of dcd1 dmp1 tup7 strains also can be satisfied by exogenous dTMP but not deoxyuridine.
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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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