A new gene function involved in the expression of mitochondrial cytochrome b is described. E158 is a respiratory deficient strain of Saccharomyces cerevisiae with a recessive mutation in nuclear DNA. The block in mitochondrial respiration is a consequence of the mutant's inability to synthesize cytochrome b. This has been confirmed by analysis of the mitochondrial translation products in E158. Since the mutant has wild-type concentrations of mature cytochrome b mRNA, the absence of the cytochrome b protein cannot be due to a transcriptional or RNA-processing defect. The wild-type gene (CBP6) responsible for the observed phenotype has been cloned by transformation of E158 with a genomic library of yeast nuclear DNA. The cloned gene has been sequenced and shown to code for a basic protein with a molecular weight of 18,657. Both deletion and disruption of the CBP6 coding sequence in chromosomal DNA of wild-type yeast lead to respiratory deficiency with a concomitant loss of cytochrome b. Part of the CBP6 gene has been fused to the trpE gene on a high expression Escherichia coli vector. The hybrid protein encoded by the trpE/CBP6 fusion has been purified from E. coli and used as an antigen for antibody production. Antibodies to the hybrid protein cross-react with an 18-kDa protein present in yeast mitochondria.
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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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