The Tup1 and Ssn6 proteins of Saccharomyces cerevisiae form a general transcriptional repression complex that regulates the expression of a diverse set of genes including aerobically repressed hypoxic genes, a-mating type genes, glucose repressed genes, and genes controlling cell flocculence. To identify amino acid residues in the Tup1 protein that are required for repression function, we selected for mutations that derepressed the hypoxic genes. Three missense mutations that accumulated stable protein were isolated, and an additional three were generated by site-directed mutagenesis. The mutant protein L62R was unable to complex with Ssn6 or repress expression of reporter genes for the hypoxic and glucose repressed regulons or the flocculence phenotype, however, expression of the a-mating type reporter gene was still repressed. The remaining mutations fell within the WD repeat region of Tup1. These mutations had different effects on the expression of the four Tup1 repressed regulons assayed, indicating that the WD repeats serve different roles for repression of different regulons.
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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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