The human Rad17-Rfc2-5 and Rad9-Rad1-Hus1 complexes play crucial roles in the activation of the ATR-mediated DNA damage and DNA replication stress response pathways. In response to DNA damage, Rad9 is recruited to chromatin in a Rad17-dependent manner in human cells. However, the DNA structures recognized by the Rad17-Rfc2-5 complex during the damage response have not been defined. Here, we show that replication protein A (RPA) stimulates the binding of the Rad17-Rfc2-5 complex to single-stranded DNA (ssDNA), primed ssDNA, and a gapped DNA structure. Furthermore, RPA facilitates the recruitment of the Rad9-Rad1-Hus1 complex by the Rad17-Rfc2-5 complex to primed and gapped DNA structures in vitro. These findings suggest that RPA-coated ssDNA is an important part of the structures recognized by the Rad17-Rfc2-5 complex. Unlike replication factor C (RFC), which uses the 3' primer/template junction to recruit proliferating cell nuclear antigen (PCNA), the Rad17-Rfc2-5 complex can use both the 5' and the 3' primer/template junctions to recruit the Rad9-Rad1-Hus1 complex, and it shows a preference for gapped DNA structures. These results explain how the Rad17-Rfc2-5 complex senses DNA damage and DNA replication stress to initiate checkpoint signaling.
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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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