Homothallic Saccharomyces cerevisiae strains switch their mating-type in a specific gene conversion event induced by a DNA double strand break made by the HO endonuclease. The RAD52 group genes control recombinational repair of DNA double strand breaks, and we examined their role in native homothallic mating-type switching. Surprisingly, we found that the Rad54 protein was important but not essential for mating-type switching under natural conditions. As an upper limit, we estimate that 29% of the rad54 spore clones can successfully switch their mating-type. The RAD55 and RAD57 gene products were even less important, but their presence increased the efficiency of the process. In contrast, the RAD51 and RAD52 genes are essential for homothallic mating-type switching. We propose that mating-type switching in RAD54 mutants occurs stochastically with a low probability, possibly reflecting different states of chromosomal structure.
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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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