Cohesion between sister chromatids depends on a multiprotein complex called cohesin that has been proposed to hold sister DNAs together by trapping them inside a large tripartite ring. Sister chromatid cohesion has hitherto only been detected by using cytological methods in living cells. We show here that cohesion between the sister DNAs of circular minichromosomes established in vivo can be detected in vitro by velocity gradient sedimentation and agarose-gel electrophoresis. This ex vivo cohesion does not depend on intercatenation of sister DNAs but is destroyed by cleavage of cohesin's Scc1 subunit or minichromosome linearization. These data represent the best evidence so far that the cohesin ring physically holds sister DNAs together and are consistent with the notion that it does so by using a topological principle involving the trapping DNAs inside its ring.
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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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