In Saccharomyces cerevisiae, the ability to use proline as a nitrogen source requires the Put3p transcriptional regulator, which turns on the expression of the proline utilization genes, PUT1 and PUT2, in the presence of the inducer proline and in the absence of preferred nitrogen sources. Changes in target gene expression occur through an alteration in activity of the DNA-bound Put3p, a member of the Zn(II)2Cys6 binuclear cluster family of proteins. Here, we report that the 'on' conformation can be mimicked in the absence of proline by the insertion of an epitope tag in several different places in the protein, as well as by specific amino acid changes that suppress a put3 mutation leading to non-inducibility of the pathway. In addition, the presence of proline causes a conformational change in the Put3 protein detected by increased sensitivity to thrombin or V8 protease. These findings suggest that Put3p shifts from an inactive to an activate state via conformational changes.
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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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