In yeast, INO1 and CHO2 gene expression is subject to repression in response to inositol and choline supplementation. The response by both genes to inositol is controlled by a single set of regulatory factors and the highly conserved and repeated UASINO element (consensus: 5' CATGTGAAAT 3') that is found in multiple copies in both promoters. However, none of the native elements found in the INO1 and CHO2 promoters constitutes an exact match to the consensus element and the functionality of individual elements from these two promoters has not been tested. In this study, the function of individual putative UASINO elements from both promoters was tested by placing promoter fragments into a reporter construct which lacked a UAS element but contained the TATA element and start of transcription from the yeast CYC1 gene fused to the Escherichia coli lacZ gene. In addition, a set of oligonucleotides containing the consensus UASINO element with the first position systematically modified was also tested for UASINO function. These studies indicated that elements that contain a C or an A as the first base at the 5' end are functional to varying degrees. The majority of potential UASINO elements from the INO1 promoter were found to be inactive, whereas all of the elements from the CHO2 promoter tested were active. These results are discussed in light of the differential regulation of the two promoters.
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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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