Cells undergo growth or increase in mass in the presence of nutrients. A key signaling molecule that responds to the presence of nutrients is the target of rapamycin (TOR). TOR is a highly conserved protein kinase and is the target of the growth inhibitor rapamycin. In response to nutrients, TOR promotes the phosphorylation of its downstream targets, leading to increased protein synthesis and decreased protein turnover. In yeast, a major mechanism for the downstream regulation of TOR effectors is by inhibition of the type 2A-related phosphatase SIT4. TOR negatively regulates SIT4 by promoting the association of SIT4 with TAP42. When TOR is inactivated by rapamycin treatment or nitrogen starvation, downstream effectors of TOR such as the serine/threonine protein kinase NPR1 and the TAP42 interacting protein TIP41 are dephosphorylated in a SIT4-dependent manner. The phosphorylation state of NPR1 and TIP41 provides a convenient readout in yeast to assay for TOR and SIT4 activities under growth-promoting or growth-inhibitory conditions.
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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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