ArticleScience advances2024
Thermodynamic profiles for cotranslational trigger factor substrate recognition.
Article in Science advances, 2024. 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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Who cites it
4 citing papers in PubMed.
- Microfluidics for protein interaction studies: current methods, challenges, and future perspectives.European biophysics journal : EBJ · 2026Review
- Microfluidic diffusional sizing in bioanalysis and biosensing.Lab on a chip · 2026Review
- Multivalent weak contacts shape chaperone-nascent protein interactions.bioRxiv : the preprint server for biology · 2026Article
- Multivalent Interactions between Chaperone and Ribosome-Nascent Chain Complex Revealed by High-Speed AFM and MD Simulations.ACS nano · 2025Article
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Authors and funding
10 authors.
Funding
Abstract
Molecular chaperones are central to the maintenance of proteostasis in living cells. A key member of this protein family is trigger factor (TF), which acts throughout the protein life cycle and has a ubiquitous role as the first chaperone encountered by proteins during synthesis. However, our understanding of how TF achieves favorable interactions with such a diverse substrate base remains limited. Here, we use microfluidics to reveal the thermodynamic determinants of this process. We find that TF binding to empty 70S ribosomes is enthalpy-driven, with micromolar affinity, while nanomolar affinity is achieved through a favorable entropic contribution for both intrinsically disordered and folding-competent nascent chains. These findings suggest a general mechanism for cotranslational TF function, which relies on occupation of the exposed TF-substrate binding groove rather than specific complementarity between chaperone and nascent chain. These insights add to our wider understanding of how proteins can achieve broad substrate specificity.
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Registered trials
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