Restriction enzyme analysis of aberrant mtDNA molecules in restored strains of Saccharomyces cerevisiae that displays an elevated level of petite formation has shown the occurrence of novel junction fragments and nonstoichiometric amounts for some unaltered bands. Five aberrant mitochondrial genomes from high-frequency petite-forming (hfp) strains (greater than 60% petites per generation) contain like-oriented duplications and single copy regions. High-frequency petite formation is postulated to arise from increased intramolecular recombination between duplicated segments. Mitochondrial DNA structures in two other hfp strains cannot be easily interpreted and might arise from intramolecular recombination. Mitochondria DNA from moderate-frequency petite-forming (mfp) strains (5-16% petites per generation) contains inverted duplications in two cases. The elevated petite formation is postulated to arise from homologous recombination between directly repeated sequences. In mtDNA from one mfp strain, deletion end-points have been shown to overlap. Such deletion endpoint overlap is postulated to be required for the maintenance of the tandem duplication in hfp strains. Two regions of the wild-type mtDNA (between cyb and oli2 and between SrRNA and oxi2) appear to be dispensable for mitochondrial function.
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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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