Transcription of the tightly linked genes GAL7-GAL10-GAL1 encoding three galactose-metabolizing enzymes in Saccharomyces cerevisiae is regulated by an interplay of the positive regulatory gene GAL4 and the negative regulatory gene GAL80. The concentration of GAL80 mRNA (determined by a quantitative blot hybridization) was nearly comparable to that of URA3 mRNA, in the wild-type yeast grown in medium with glucose or glycerol. The intracellular concentration of GAL80 mRNA increased by changing the carbon source to galactose by a factor of more than 5, in contrast to a GAL4 mRNA concentration which is essentially unaffected by galactose [Laughon and Gesteland, Proc. Natl. Acad. Sci. USA 79 (1982) 6827-6831]. The inducible expression of the GAL80 gene was suggested to involve its own product and also the product of GAL4 by using various mutations in those genes.
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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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