Dimethyl sulfate, DNase I and micrococcal nuclease DNA cleavage were combined with the ligation-mediated polymerase chain reaction to obtain high resolution maps of the promoter regions for two cell-type-specific genes: the a-specific STE2 gene and the alpha-specific STE3 gene. We find that MCM1 binds in vivo in a-cells to a 16 bp P-box sequence located in the STE2 UAS. In alpha-cells, the footprint pattern is extended relative to a-cells, consistent with the additional binding of MAT alpha 2 to the sequences flanking each end of the P-box. A nucleosome was found adjacent to the P-box of the transcriptionally repressed a-specific STE2 UAS in alpha-cells, positioned so that the nucleosome overlaps the TATA-box. In contrast, such well-positioned nucleosomes were not found for the transcriptionally active STE2 UAS in a-cells, where instead the TATA box appears to be bound to the general transcription factor TFIID. These observations support the hypothesis that MAT alpha 2 repression of a-specific genes is mediated by nucleosomes, perhaps by exclusion of TFIID from the TATA-box.
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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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