When the yeast Saccharomyces cerevisiae sigma 1278b was starved for nitrogen, the total glutathione (GSH) pool increased from 7 to 17 nmol (mg dry wt)-1 during the first 2 h and then declined. More than 90% of the total GSH shifted towards the central vacuole during this time. This transient stimulation was not observed in the presence of buthionine-(S,R)-sulphoximine (BSO), a specific transition-state-analogue inhibitor of gamma-glutamylcysteine synthase (gamma-GCS), nor in a mutant strain deficient in this enzyme- gamma-Glutamyltranspeptidase (gamma-GT), a vacuolar enzyme responsible for the initial step of GSH degradation, was derepressed during nitrogen starvation. This mechanism can apparently enable the starved yeast cell to use the constituent amino acids from GSH which accumulate in the vacuole to satisfy its growth requirements for nitrogen.
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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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