The abundant DNA-binding proteins ABF1 and CPF1 are members of a family of global regulators with diverse chromosomal functions in the yeast Saccharomyces cerevisiae. Recent evidence suggests that these protein factors may be involved in establishing and maintaining well-defined chromatin in promoter regions and other genetic elements. We have investigated the involvement of ABF1 and CPF1 in chromatin organization at the QCR8 gene, encoding subunit VIII of the mitochondrial ubiquinol-cytochrome c oxidoreductase. The promoter region of the QCR8 gene contains overlapping binding sites for ABF1 and CPF1. Nucleosome positioning studies indicate that the QCR8 gene is associated with a phased array of nucleosomes under both catabolite-repressed and derepressed growth conditions. Analysis of binding site mutants reveals that both ABF1 and CPF1 are involved in maintaining a nuclease-hypersensitive region in the QCR8 promoter. The chromatin structure at QCR8 during steady-state growth is, however, mainly dependent on binding of ABF1 to the promoter region. Implications of these findings for the role played by ABF1 and CPF1 in the regulation of mitochondrial biogenesis and other processes important for cell growth and division will be 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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