ArticleNature communications2025
The YoaA-χ helicase modulates the dynamics of single-stranded DNA binding protein on DNA.
Article in Nature communications, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
4 citing papers in PubMed.
- A superfamily 1 helicase translocates on double-stranded DNA.bioRxiv : the preprint server for biology · 2026Article
- Humic acid's sheltering effect paradoxically promotes antibiotic resistance gene dissemination during peroxymonosulfate water treatment.Nature communications · 2026Article
- A novel ψ-χ fusion protein for unravelling the contributions of χ to DNA replication and repair.Nucleic acids research · 2026Article
- A NovelbioRxiv : the preprint server for biology · 2026Article
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Authors and funding
6 authors.
Funding
Abstract
The Escherichia coli helicase, YoaA, and DNA polymerase III subunit, χ, form a complex (YoaA-χ) that promotes tolerance to the DNA chain-terminator 3'-azidothymidine (AZT). Single-stranded DNA binding protein (SSB), which accumulates at stalled replication forks, also contributes to AZT tolerance through interactions with χ. Here we show that in vitro, χ mediates interactions between YoaA and SSB that modulate helicase activity in a substrate-specific manner with little effect on overhang DNA but inhibiting unwinding of forked DNA. SSB similarly affects the activity of the YoaA paralog, DinG. Single-molecule experiments show that SSB translocates with YoaA-χ, increasing both the lifetime and frequency of SSB binding events. Mutational analyses show that χ binds at the back of YoaA relative to the direction of translocation supporting a model in which YoaA-χ pulls SSB along DNA as it translocates. To our knowledge, this is the first demonstration of a mechanoenzyme pulling SSB along ssDNA.
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Registered trials
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