Growth of Saccharomyces cerevisiae on D-glucono-delta-lactone (delta gl) was found to be associated with a specific coordinate induction of the synthesis of two enzymes of the oxidative pentose phosphate pathway--6-phosphogluconate dehydrogenase and 6-phosphogluconolactonase--together with that of a third enzyme, gluconokinase. The gnd1 mutation, responsible for an approximately 80% loss of 6-phosphogluconate dehydrogenase activity and the inability of the cells to grow on delta gl, completely abolished the induction of all three enzymes, while the gnd2 mutation affected this only partially. One class of gnd1 revertants, selected for growth on delta gl, was found to have recovered normal dehydrogenase activity and the ability to synthesize the three enzymes when induced by delta gl. Another class of delta gl-positive revertants possessed constitutively elevated levels of gluconokinase. In contrast, glucose-positive revertants of gnd1, with restored constitutive dehydrogenase activity, continued to remain deficient in induction of the three enzymes and also failed to grow on delta gl. Induction of 6-phosphogluconate dehydrogenase activity was associated with increased transcription of the gene coding for the major isoenzyme; the transcript remained undetectable in the gnd1 mutant. Induction of these specific enzymes thus appears to be essential for growth of S. cerevisiae on delta gl.
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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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