The information encoded in both the nuclear and mitochondrial genomes must be coordinately regulated to respond to changes in cellular growth and energy states. Despite identification of the mitochondrial RNA polymerase (mtRNAP) from several organisms, little is known about mitochondrial transcriptional regulation. Studying the shift from fermentation to respiration in Saccharomyces cerevisiae, we have demonstrated a direct correlation between in vivo changes in mitochondrial transcript abundance and in vitro sensitivity of mitochondrial promoters to ATP concentration (K(m)ATP). Consistent with the idea that the mtRNAP itself senses in vivo ATP levels, we found that transcript abundance correlates with respiration, but only when coupled to mitochondrial ATP synthesis. In addition, we characterized mutations in the mitochondrial promoter and the mtRNAP accessory factor Mtf1 that alter both in vitro K(m)ATP and in vivo transcription in response to respiratory changes. We propose that shifting cellular pools of ATP coordinately control nuclear and mitochondrial transcription.
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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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