The INO1 gene of yeast is expressed in logarithmically growing, wild-type cells when inositol is absent from the medium. However, the INO1 gene is repressed when inositol is present during logarithmic growth and it is also repressed as cells enter stationary phase whether inositol is present or not. In this report, we demonstrate that transient nitrogen limitation also causes INO1 repression. The repression of INO1 in response to nitrogen limitation shares many features in common with repression in response to the presence of inositol. Specifically, the response to nitrogen limitation is dependent upon the presence of a functional OPI1 gene product, it requires ongoing phosphatidylcholine biosynthesis and it is mediated by the repeated element, UASINO, found in the promoter of INO1 and other co-regulated genes of phospholipid biosynthesis. Thus, we propose that repression of INO1 in response to inositol and in response to nitrogen limitation occurs via a common mechanism that is sensitive to the status of ongoing phospholipid metabolism.
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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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