Smc5/6 is an essential genome maintenance complex that interacts with double-stranded (ds) DNA, single-stranded (ss) DNA, and ss-dsDNA junctions. DNA association underlies Smc5/6's functions in managing intermediates generated during genome replication and repair. However, the mechanisms of this activity are not fully understood. Here, we report a single-molecule study examining Smc5/6 association with a dsDNA substrate containing a ssDNA gap with defined 3' and 5' junctions. We found that Smc5/6 associates with both 3' and 5' junctions but prefers the 3' junction in the presence of the ssDNA-binding complex RPA. Further, Smc5/6's junction association frequency and dwell time are regulated by two non-SMC subcomplexes and DNA binding residues of Smc6. Moreover, Smc5/6 prefers binding to junction sites free of the sliding clamp PCNA over those occupied with it. These results suggest that Smc5/6 utilizes its multiple structural modules to associate with junction sites in coordination with other genome maintenance factors.
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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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