Cyp1p (Hap1p) activates, among others, the two structural genes, CYC1 and CYP3 (CYC7) which encode isocytochromes c in Saccharomyces cerevisiae. This activation is believed to occur through the binding of the protein to the dissimilar upstream activation sequences (UASs), UAS1 and UAS', present upstream of CYC1 and CYP3, respectively. In this paper, we describe a novel promoter mutation, CYP3-5, which results from a 39-bp deletion located about 160 bp upstream of the well-characterized CYP3 UAS. This deletion includes a sequence identical to the 3' moiety of the CYC1 UAS1. Strikingly, a sequence identical to the 5' part of the CYC1 UAS1 is also present 60 bp downstream of the 3' half in the wild-type gene, suggesting that a spatial organization of the promoter might lead to the reconstitution in vivo of an active UAS1-like sequence. Interestingly, we find that in the presence of the CYP3-5 mutation, which disrupts this potential UAS1, the CYP-UAS' complex is importantly diminished and the transcription of CYP3 is insensitive to the wild-type CYP1-activating protein.
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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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