We have developed a genomic footprinting protocol which allows us to examine protein-DNA interactions at single copy chromosomal origins of DNA replication in the budding yeast Saccharomyces cerevisiae. We show that active replication origins oscillate between two chromatin states during the cell cycle: an origin recognition complex (ORC)-dependent post-replicative state and a Cdc6p-dependent pre-replicative state. Furthermore, we show that both post- and pre-replicative complexes can form efficiently on closely apposed replicators. Surprisingly, ARS301 which is active as an origin on plasmids but not in its normal chromosomal location, forms ORC- and Cdc6p-dependent complexes in both its active and inactive contexts. Thus, although ORC and Cdc6p are essential for initiation, their binding is not sufficient to dictate origin use.
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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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