ArticleProceedings of the National Academy of Sciences of the United States of America2020
Dynamic human MutSα-MutLα complexes compact mismatched DNA.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.
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Who cites it
29 citing papers in PubMed, 48 citations in OpenAlex.
- Bacillus subtilis MutL samples multiple conformations during nucleotide binding and hydrolysis.Structure (London, England : 1993) · 2026Article
- DNA mismatch repair mediated by Mlh1-Pms1 endonuclease-catalyzed mispair excision.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
- The GHKL ATPase Family as a Paradigm for MutL Homolog Function in DNA Mismatch Repair.International journal of molecular sciences · 2025Review
- Mlh1-Pms1 couples ATP-driven DNA compaction with nick-dependent endonuclease activation.Nucleic acids research · 2025Article
- Therapeutic targeting of mismatch repair-deficient cancers.Nature reviews. Clinical oncology · 2025Review
- Multiplexed stamp-transfer AFM deposition improves resolution of protein-DNA conformational states.Biophysical journal · 2025Article
- Epidemiology, pathogenesis, biology and evolving management of MSI-H/dMMR cancers.Nature reviews. Clinical oncology · 2025Review
- Protein arginine methyltransferase 6 enhances immune checkpoint blockade efficacy via the STING pathway in MMR-proficient colorectal cancer.Journal for immunotherapy of cancer · 2025Article
- Mlh1-Pms1 ATPase activity is regulated distinctly by self-generated nicks and strand discrimination signals in mismatch repair.Nucleic acids research · 2025Article
- The mismatch repair factor Mlh1-Pms1 uses ATP to compact and remodel DNA.bioRxiv : the preprint server for biology · 2025Article
- Combining single-molecule and structural studies reveals protein and DNA conformations and assemblies that govern DNA mismatch repair.Current opinion in structural biology · 2024Review
- Action-At-A-Distance in DNA Mismatch Repair: Mechanistic Insights and Models for How DNA and Repair Proteins Facilitate Long-Range Communication.Biomolecules · 2024Review
- The Mlh1-Pms1 endonuclease uses ATP to preserve DNA discontinuities as strand discrimination signals to facilitate mismatch repair.bioRxiv : the preprint server for biology · 2024Article
- Therapeutic validation of MMR-associated genetic modifiers in a human ex vivo model of Huntington disease.American journal of human genetics · 2024Article
- New Discoveries on Protein Recruitment and Regulation during the Early Stages of the DNA Damage Response Pathways.International journal of molecular sciences · 2024Review
- Insights into DNA cleavage by MutL homologs from analysis of conserved motifs in eukaryotic Mlh1.BioEssays : news and reviews in molecular, cellular and developmental biology · 2023Article
- Single-molecule imaging of genome maintenance proteins encountering specific DNA sequences and structures.DNA repair · 2023Review
- A conserved motif in the disordered linker of human MLH1 is vital for DNA mismatch repair and its function is diminished by a cancer family mutation.Nucleic acids research · 2023Article
- The mismatch repair endonuclease MutLα tethers duplex regions of DNA together and relieves DNA torsional tension.Nucleic acids research · 2023Article
- MutS functions as a clamp loader by positioning MutL on the DNA during mismatch repair.Nature communications · 2022Article
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Authors and funding
15 authors at 3 institutions in 1 country.
Funding
Abstract
DNA mismatch repair (MMR) corrects errors that occur during DNA replication. In humans, mutations in the proteins MutSα and MutLα that initiate MMR cause Lynch syndrome, the most common hereditary cancer. MutSα surveilles the DNA, and upon recognition of a replication error it undergoes adenosine triphosphate-dependent conformational changes and recruits MutLα. Subsequently, proliferating cell nuclear antigen (PCNA) activates MutLα to nick the error-containing strand to allow excision and resynthesis. The structure-function properties of these obligate MutSα-MutLα complexes remain mostly unexplored in higher eukaryotes, and models are predominately based on studies of prokaryotic proteins. Here, we utilize atomic force microscopy (AFM) coupled with other methods to reveal time- and concentration-dependent stoichiometries and conformations of assembling human MutSα-MutLα-DNA complexes. We find that they assemble into multimeric complexes comprising three to eight proteins around a mismatch on DNA. On the timescale of a few minutes, these complexes rearrange, folding and compacting the DNA. These observations contrast with dominant models of MMR initiation that envision diffusive MutS-MutL complexes that move away from the mismatch. Our results suggest MutSα localizes MutLα near the mismatch and promotes DNA configurations that could enhance MMR efficiency by facilitating MutLα nicking the DNA at multiple sites around the mismatch. In addition, such complexes may also protect the mismatch region from nucleosome reassembly until repair occurs, and they could potentially remodel adjacent nucleosomes.
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