Specific regions of genomes (fragile sites) are hot spots for the chromosome rearrangements that are associated with many types of cancer cells. Understanding the molecular mechanisms regulating the stability of chromosome fragile sites, therefore, has important implications in cancer biology. We previously identified two chromosome fragile sites in Saccharomyces cerevisiae that were induced in response to the reduced expression of Pol1p, the catalytic subunit of DNA polymerase alpha. In the study presented here, we show that reduced levels of Pol3p, the catalytic subunit of DNA polymerase delta, induce instability at these same sites and lead to the generation of a variety of chromosomal aberrations. These findings demonstrate that a change in the stoichiometry of replicative DNA polymerases results in recombinogenic DNA lesions, presumably double-strand DNA breaks.
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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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| Evidence ID | Analyze ID | File | Description |
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