The abundance of short and long interspersed nuclear sequences (SINEs and LINEs) and pseudogenes in eukaryotic genomes indicates that reverse transcriptase (RT)-mediated phenomena are important in genome evolution. However, the mechanisms involved in their spread are largely unknown. We have developed a selection system in the yeast Saccharomyces cerevisiae to test whether RT-mediated events could be linked to the repair of double-strand breaks (DSBs). Here we show that DSBs can be fixed by the insertion of complementary DNAs at the break site. In the presence of functional RT (from human L1, yeast Tyl or Crithidia CRE1), and in the absence of homologous recombination, an HO endonuclease-induced DSB at the mating type (MAT) locus is the primary site at which a marked cDNA is observed among surviving cells. The structure and junctional sequences of these insertions suggest that repair occurs primarily by non-homologous recombination. Our data support a role for endogenous retroelements in the repair of chromosomal 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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