Transcription of the ARG4 gene of Saccharomyces cerevisiae is regulated by general control of amino acid biosynthesis but not by a specific regulatory mechanism. Three deletion mutants (delta I, delta II, delta III) successively removing DNA sequences upstream from the coding sequence have been phenotypically analyzed after insertion into a single copy plasmid. As expected, delta I, which lacks the sequences upstream to -155, including the two putative upstream activation sequences (UAS), was unable to derepress argininosuccinate lyase biosynthesis under conditions of amino acid starvation. In delta II (deleted up to -126) the enzyme activity was very low and cells harbouring this allele were arginine dependent. These drastic phenotypic changes can be attributed to the loss of 12 out of 14 dA residues from positions -124 to -137. This poly (dAdT) sequence most likely serves as an upstream promoter element for constitutive expression of ARG4. The delta III deletion removes all 5' sequences including the putative TATA box. This inactive allele has been successfully used for selecting yeast promoters of unknown origin.
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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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