Soluble fumarate reductase from yeast irreversibly catalyzes the reduction of fumarate to succinate and has noncovalently bound flavin adenine dinucleotide. In yeast, there are two isoenzymes of fumarate reductase, which can be distinguished on the basis of their absorption or nonabsorption to DE-52 columns. Previously, we have purified FRDS1 and isolated its gene (FRDS) from Saccharomyces cerevisiae. In the present study, FRDS2 was purified to homogeneity by four chromatography steps. The N-terminal and C-terminal amino acid sequences of FRDS2 were identical to the deduced amino acid sequence of the OSM1 gene (EMBL Database Accession No. L-26347), whose isolation and biochemical properties have not been studied up until now. From these results, we conclude that FRDS2 is encoded by the OSM1 gene. The deduced amino acid sequence of the OSM1 gene revealed that FRDS2 is synthesized as a precursor protein containing a presequence composed of 32 amino acid residues. The mature enzyme consists of a protein of 469 amino acid residues with a molecular weight of 51,370. The N-terminal extension had the characteristics of a typical signal sequence required for targeting and sorting to a noncytosolic destination. In fact, FRDS2 was found to be located in promitochondria.
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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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