The DNA polymerase 4 protein (Pol4) of Saccharomyces cerevisiae is a member of the X family of DNA polymerases whose closest human relative appears to be DNA polymerase lambda. Results from previous genetic studies conflict over the role of Pol4 in vivo. Here we show that deletion of Pol4 in a diploid strain of the SK1 genetic background results in sensitivity to methyl methanesulfonate (MMS). However, deletion of Pol4 in other strain backgrounds and in haploid strains does not yield an observable phenotype. The MMS sensitivity of a Pol4-deficient strain can be rescued by deletion of YKu70. We also show that deletion of Pol4 results in a 6- to 14-fold increase in the MMS-induced mutation frequency and in a significant increase in AT-to-TA transversions. Our studies suggest that Pol4 is critical for accurate repair of DNA lesions induced by MMS.
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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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