Expression of the yeast arginase gene (CAR1) responds to both induction and nitrogen catabolite repression. Regulation is mediated through sequences that both positively and negatively modulate CAR1 transcription. A short sequence, 5'-TAGCCGCCGAGGG-3', possessing characteristics of a repressor binding site, plays a central role in the induction process. A fragment containing this upstream repression sequence (URS1) repressed gene expression when placed either 5' or 3' to the upstream activation sequences of the heterologous gene CYC1. Action of the URS and its cognate repressor was overcome by CAR1 induction when the URS was situated cis to the CAR1 flanking sequences. This was not observed, however, when it was situated downstream of a heterologous CYC1 upstream activation sequence indicating that URS function is specifically neutralized by cis-acting elements associated with CAR1 induction. Searches of sequences in various gene banks revealed that URS1-like sequences occur ubiquitously in genetic regulatory regions including those of bacteriophage lambda, yeast, mammalian, and viral genes. In a significant number of cases the sequence is contained in a region associated with negative control of yeast gene regulation. These data suggest the URS identified in this work is a generic repressor target site that apparently has been conserved during the evolution of transcriptional regulatory systems.
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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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