DNA double-strand breaks (DSBs) are acutely hazardous for cells, as they can cause genome instability. DSB repair involves the sequential recruitment of repair factors to the DSBs, followed by Rad51-mediated homology probing, DNA synthesis, and ligation. However, little is known about how cells react if no homology is found and DSBs persist. Here, by monitoring a single persistent DNA break, we show that, following DNA resection and RPA recruitment, Rad51 spreads chromosome-wide bidirectionally from the DSB but selectively only on the broken chromosome. Remarkably, the persistent DSB is later fixed to the nuclear periphery in a process that requires Rad51, the histone variant H2A.Z, its SUMO modification, and the DNA-damage checkpoint. Indeed, H2A.Z is deposited close to the break early but transiently and directs DNA resection, single DSB-induced checkpoint activation, and DSB anchoring. Thus, a persistent DSB induces a multifaceted response, which is linked to a specific chromatin mark.
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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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