In Saccharomyces cerevisiae the FOB1 gene affects replication fork blocking activity at the replication fork block (RFB) sequences and promotes recombination events within the rDNA cluster. Using in vivo footprinting assays we mapped two in vivo Fob1p-binding sites, RFB1 and RFB3, located in the rDNA enhancer region and coincident with those previously reported to be in vitro binding sites. We previously provided evidences that DNA topoisomerase I is able to cleave two sites within this region. The results reported in this paper, indicate that the DNA topoisomerase I cleavage specific activity at the enhancer region is affected by the presence of Fob1p and independent of replication and transcription activities. We thus hypothesize that the binding to DNA of Fob1p itself may be the cause of the DNA topoisomerase I activity in the rDNA enhancer.
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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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| Evidence ID | Analyze ID | File | Description |
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