The eukaryotic MutS homolog complexes, Msh2-Msh6 and Msh2-Msh3, recognize mismatched bases in DNA during mismatch repair (MMR). The eukaryote-specific N-terminal regions (NTRs) of Msh6 and Msh3 have not been characterized other than by demonstrating that they contain an N-terminal PCNA-interacting motif. Here we have demonstrated genetically that the NTR of Msh6 has an important role in MMR that is partially redundant with PCNA binding. Small-angle X-ray scattering (SAXS) was used to determine the solution structure of the complex of PCNA with Msh2-Msh6 and with the isolated Msh6 NTR, revealing that the Msh6 NTR is a natively disordered domain that forms an extended tether between Msh6 and PCNA. Moreover, computational analysis of PCNA-interacting motifs in the S. cerevisiae proteome indicated that flexible linkers are a common theme for PCNA-interacting proteins that may serve to localize these binding partners without tightly restraining them to the immediate vicinity of PCNA.
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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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