The expression of the structural genes for lysine (LYS) biosynthesis is controlled by a pathway-specific regulation mediated by the transcriptional activator Lys14 in the presence of alpha-aminoadipate semialdehyde, an intermediate of the pathway acting as a co-inducer. Owing to end product inhibition of the first step of the pathway, excess lysine reduces the production of the co-inducer and causes apparent repression of the LYS genes. Analysis of LYS promoters and insertions within an heterologous reporter gene have allowed the characterization of an upstream activating element (UASLYS) able to confer Lys14- and alpha-amino-adipate semialdehyde-dependent activation as well as apparent repression by lysine to another yeast gene. This DNA motif is present as one of several copies in the promoters of at least six LYS genes. The consensus sequence derived from the comparison of the UASLYS showing the highest activation capacities comprises the nonameric core sequence TCCRNYGGA. The RNY sequence of the 3 bp spacer as well as the presence of flanking AT-rich regions on both sides of the core sequence appear essential for optimal activation. Further evidence that this element is the target of Lys14p was provided by the demonstration that Lys14p binds to UASLYS in vitro. The binding is independent of the presence of the co-inducer and is not affected by lysine. It depends on the integrity of the putative Zn(II)2Cys6 binuclear cluster contained in the Lys14p.
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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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