Previously we showed that Saccharomyces cerevisiae Chd1 chromatin remodelling enzyme associates with nucleosomes oriented towards the longer linker (Sundaramoorthy et al., 2018) (1). Here we report a series of structures of Chd1 bound to nucleosomes during ongoing ATP-dependent repositioning. Combining these with biochemical experiments and existing literature we propose a model in which Chd1 first associates oriented to sample putative entry DNA. In an ATP-dependent reaction, the enzyme then redistributes to the opposite side of the nucleosome, where it subsequently adopts a conformation productive for DNA translocation. Once this active complex extends nascent exit linker to approximately 15bp, it is sensed by the Chd1 DNA binding domain resulting in conversion to a product inhibited state. These observations provide a mechanistic basis for the action of a molecular ruler element in nucleosome spacing.
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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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