Tah18-Dre2 is a recently identified yeast protein complex, which is highly conserved in human and has been implicated in the regulation of oxidative stress induced cell death and in cytosolic Fe-S proteins synthesis. Tah18 is a diflavin oxido-reductase with binding sites for flavin mononucleotide, flavin adenine dinucleotide and nicotinamide adenine dinucleotide phosphate, which is able to transfer electrons to Dre2 Fe-S clusters. In this work we characterized in details the interaction between Tah18 and Dre2, and analysed how it conditions yeast viability. We show that Dre2 C-terminus interacts in vivo and in vitro with the flavin mononucleotide- and flavin adenine dinucleotide-binding sites of Tah18. Neither the absence of the electron donor nicotinamide adenine dinucleotide phosphate-binding domain in purified Tah18 nor the absence of Fe-S in aerobically purified Dre2 prevents the binding in vitro. In vivo, when this interaction is affected in a dre2 mutant, yeast viability is reduced. Conversely, enhancing artificially the interaction between mutated Dre2 and Tah18 restores cellular viability despite still reduced cytosolic Fe-S cluster biosynthesis. We conclude that Tah18-Dre2 interaction in vivo is essential for yeast viability. Our study may provide new insight into the survival/death switch involving this complex in yeast and in human cells.
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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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