A large number of gene products have been identified that either directly or indirectly alter the inheritance of mitochondrial DNA. In yeast, we have used a unique genetic screen based on the transfer of DNA from mitochondria to nucleus to identify nuclear-encoded gene products that are targeted to mitochondria and impact the stable inheritance of mitochondrial DNA. A specific allele of one of these genes, yme2-4, prevents even the low wild-type rate of mitochondrial DNA transfer to the nucleus and imparts significant temperature-sensitive and respiratory-growth defects. Intra- and extragenic suppressors of the yme2-4 growth phenotypes were isolated and analysis of these interacting genes reveals that both YME2 and its suppressors influence the structure and number of mitochondrial nucleoids. The yme2-4 allele decreases the average number of mtDNA nucleoids found in cells and the sensitivity of DNA in toluene-treated mitochondria to digestion by DNA exonuclease, effects reversed by intra- and extragenic suppressors. The extragenic suppressor, a missense allele of ILV5, encodes an enzyme of the branched-chain amino acid biosynthetic pathway that is also a component of mitochondrial nucleoids. A null allele of ILV5 suppresses transfer of mitochondrial DNA to the nucleus and displays synthetic interactions with yme2-4.
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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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