3-Methyl adenine (3meA), a minor-groove DNA lesion, presents a strong block to synthesis by replicative DNA polymerases (Pols). To elucidate the means by which replication through this DNA lesion is mediated in eukaryotic cells, here we carry out genetic studies in the yeast Saccharomyces cerevisiae treated with the alkylating agent methyl methanesulfonate. From the studies presented here, we infer that replication through the 3meA lesion in yeast cells can be mediated by the action of three Rad6-Rad18-dependent pathways that include translesion synthesis (TLS) by Pol(eta) or -zeta and an Mms2-Ubc13-Rad5-dependent pathway which presumably operates via template switching. We also express human Pols iota and kappa in yeast cells and show that they too can mediate replication through the 3meA lesion in yeast cells, indicating a high degree of evolutionary conservation of the mechanisms that control TLS in yeast and human cells. We discuss these results in the context of previous observations that have been made for the roles of Pols eta, iota, and kappa in promoting replication through the minor-groove N2-dG adducts.
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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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