We have examined expression of the protein coded within the MRP 1 locus of Saccharomyces cerevisiae. Direct evidence is provided for the assignment of the MRP1 gene product as a protein component of the small subunit of mitochondrial ribosomes. Further studies examined the extent to which the expression of the MRP1 protein is coordinated with the expression of other mitochondrial ribosomal components coded in the nuclear and mitochondrial genomes. Extra copies of the MRP1 gene were introduced into yeast cells to perturb expression from MRP1 relative to other mitochondrial ribosomal components to determine whether forms of regulation function to limit the accumulation of either MRP1 mRNA or protein under these conditions. Increases in MRP1 gene dosage were accompanied by substantial increases in both MRP1 mRNA and protein, indicating that their accumulation was not linked to the level of expression of other mitochondrial ribosomal components. This conclusion was confirmed by additional studies that showed that the accumulation of the MRP1 protein was unaffected in cells that did not express mitochondrially-encoded rRNAs. These results contrast with previous studies on the expression of two other mitochondrial ribosomal proteins indicating that regulatory properties of mitochondrial ribosomal proteins are quite diverse.
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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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