Addition of glucose to quiescent Saccharomyces cerevisiae cells causes the immediate induction of approximately 1000 genes. These genes include ribosomal proteins (RP) and non-RP genes needed for ribosome production and other growth processes. RRPE sequence elements are commonly found 5' of non-RP growth gene ORFs, and Stb3 has recently been identified as an RRPE binding protein. Stb3 overexpression (Stb3OE) produces a slow growth phenotype that is associated with reduced expression of non-RP genes and a drop in the rate of amino acid incorporation. Genes affected by Stb3 are associated with a TGAAAAA motif. Stb3 is restricted to the nucleus in quiescent cells and is immediately released into the cytoplasm after glucose repletion. The Stb3OE slow growth phenotype is reversed by loss of Hos2 histone deactylase activity, consistent with the idea that repression involves histone deacetylation. SCH9 overexpression or PPH22 deletion, mutations that activate target of rapamycin (Tor) nutrient sensing pathways, also reverse the Stb3OE phenotype. Inhibition of Tor signaling makes the phenotype more severe and restricts Stb3 to the nucleus. The results support a model in which Stb3 is one of the components that repress a large set of growth genes as nutrients are depleted. This repression is ended by glucose.
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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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Evidence ID | Analyze ID | File | Description |
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