We show that the HAP1 protein binds in vitro to the upstream activation site (UAS) of the yeast CYC7 gene. Strikingly, this sequence bears no obvious similarity to the sequence bound by HAP1 at UAS1 of the CYC1 gene. The CYC1 and CYC7 sites compete for binding to HAP1 and have comparable affinities for the protein. The gross features of the interaction of HAP1 with the two sites are similar: multiple major and minor groove contacts, spanning 23 bp, on one helical face, with a back-side major groove contact toward one end. The precise positions of the contacts differ, however. A mutant form of HAP1, HAP1-18, abolishes the ability of the protein to bind to UAS1 but not CYC7 DNA. Possible mechanisms for how a single protein recognizes two sequences are discussed.
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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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