Transposable element (TE) evolution in genomes has mostly been deduced from comparative genome analyses. TEs often account for a large proportion of the eukaryotic nuclear genome (up to 50%, depending on the species). Among the many existing genomic copies, only a small fraction may contribute to the mobility of a TE family. We have identified here, using a genetic screening procedure to trap Ty1 long terminal repeat-retrotransposon insertions in Saccharomyces cerevisiae, which among the populations of resident Ty1 copies are responsible for Ty1 mobility. Although the newly inserted Ty1 copies resulting from a single round of transposition were found to originate from a limited subset of Ty1 resident copies, they showed a high degree of diversity at the nucleotide level, mainly due to the reverse transcription-mediated recombination. In this process, highly expressed and strikingly nonautonomous mutant Ty1 were found to be the most frequently used resident copies, which suggests that nonautonomous elements play a key role in the dynamics of the Ty1 family.
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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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