The generation of a local chromatin topology conducive to transcription is a key step in gene regulation. The yeast SWI/SNF complex is the founding member of a family of ATP-dependent remodelling activities capable of altering chromatin structure both in vitro and in vivo. Despite its importance, the pathway by which the SWI/SNF complex disrupts chromatin structure is unknown. Here we use a model system to demonstrate that the yeast SWI/SNF complex can reposition nucleosomes in an ATP-dependent reaction that favours attachment of the histone octamer to an acceptor site on the same molecule of DNA (in cis). We show that SWI/SNF-mediated displacement of the histone octamer is effectively blocked by a barrier introduced into the DNA, suggesting that this redistribution involves sliding or tracking of nucleosomes along DNA, and that it is achieved by a catalytic mechanism. We conclude that SWI/SNF catalyses the redistribution of nucleosomes along DNA in cis, which may represent a general mechanism by which ATP-dependent chromatin remodelling occurs.
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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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