The RAD3 gene of Saccharomyces cerevisiae is required for UV excision-repair and is essential for cell viability. We have identified the rem1 mutations (enhanced spontaneous mitotic recombination and mutation) of Saccharomyces cerevisiae as alleles of RAD3 by genetic mapping, complementation with the cloned wild-type gene, and DNA hybridization. The high levels of spontaneous mitotic gene conversion, crossing over, and mutation conferred upon cells by the rem1 mutations are distinct from the effects of all other alleles of RAD3. We present preliminary data on the localization of the rem1 mutations within the RAD3 gene. The interaction of the rem1 mutant alleles with a number of radiation-sensitive mutations is also different than the interactions reported for previously described (UV-sensitive) alleles of RAD3. Double mutants of rem1 and a defect in the recombination-repair pathway are inviable, while double mutants containing UV-sensitive alleles of RAD3 are viable. The data presented here demonstrate that: (1) rem1 strains containing additional mutations in other excision-repair genes do not exhibit elevated gene conversion; (2) triple mutants containing rem1 and mutations in both excision-repair and recombination-repair are viable; (3) such triple mutants containing rad52 have reduced levels of gene conversion but wild-type frequencies of crossing over. We have interpreted these observations in a model to explain the effects of rem1. Consistent with the predictions of the model, we find that the size of DNA from rem1 strains, as measured by neutral sucrose gradients, is smaller than wild type.
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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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