The ability of four yeast DNA polymerase mutant strains to carry out the repair of DNA treated with MMS was studied. Mutation in DNA polymerase Rev3, as well as the already known mutation in the catalytic subunit of DNA polymerase delta, were both found to lead to the accumulation of single-strand breaks, which indicates defective repair. A double-mutant strain carrying mutations in DNA polymerase delta and a deletion in the REV3 gene had a complete repair defect, both at permissive (23 degrees C) and restrictive (38 degrees C) temperatures, which was not observed in other pairwise combinations of tested polymerase mutants. Other polymerases are not involved in the repair of exogenous DNA methylation damage, since neither mutation in the DNA polymerase epsilon, nor deletion in the DNA polymerase IV (beta70) gene, caused defective repair. The data obtained suggest that DNA polymerases delta and Rev3p are both necessary to perform repair synthesis in the base-excision repair of methylation damage. The results are discussed in the light of current concepts on the role of DNA polymerase Rev3 in mutagenesis.
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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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