In the mitochondrial ATP synthase (mtATPase) of the yeast Saccharomyces cerevisiae, the stoichiometry of subunits d, oligomycin-sensitivity conferring protein (OSCP), and b is poorly defined. We have investigated the stoichiometry of these subunits by the application of hexahistidine affinity purification technology. We have previously demonstrated that intact mtATPase complexes incorporating a Hex6-tagged subunit can be isolated via Ni2+-nitrilotriacetic acid affinity chromatography (Bateson, M., Devenish, R. J., Nagley, P., and Prescott, M. (1996) Anal. Biochem. 238, 14-18). Strains were constructed in which Hex6-tagged versions of subunits d, OSCP, and b were coexpressed with the corresponding wild-type subunit. This coexpression resulted in a mixed population of mtATPase complexes containing untagged wild-type and Hex6-tagged subunits. The stoichiometry of each subunit was then assessed by determining whether or not the untagged wild-type subunit could be recovered from Ni2+-nitrilotriacetic acid purifications as an integral component of those complexes absorbed by virtue of the Hex6-tagged subunit. As only the Hex6-tagged subunit was recovered from such purifications, we demonstrate that the stoichiometry of subunits d, OSCP, and b in yeast is 1 in each case.
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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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