@article{Kohn2021-09-03Impac-55111,
  year={2021},
  doi={10.1038/s41598-021-97219-1},
  title={Impact of crowded environments on binding between protein and single-stranded DNA},
  volume={11},
  journal={Scientific Reports},
  author={Köhn, Birgit and Schwarz, Patricia and Wittung-Stafshede, Pernilla and Kovermann, Michael},
  note={Article Number: 17682}
}

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    <dc:rights>Attribution 4.0 International</dc:rights>
    <dc:creator>Schwarz, Patricia</dc:creator>
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    <dcterms:title>Impact of crowded environments on binding between protein and single-stranded DNA</dcterms:title>
    <dc:creator>Kovermann, Michael</dc:creator>
    <dcterms:issued>2021-09-03</dcterms:issued>
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    <dc:creator>Wittung-Stafshede, Pernilla</dc:creator>
    <dcterms:abstract xml:lang="eng">The concept of Molecular Crowding depicts the high density of diverse molecules present in the cellular interior. Here, we determine the impact of low molecular weight and larger molecules on binding capacity of single-stranded DNA (ssDNA) to the cold shock protein B (CspB). Whereas structural features of ssDNA-bound CspB are fully conserved in crowded environments as probed by high-resolution NMR spectroscopy, intrinsic fluorescence quenching experiments reveal subtle changes in equilibrium affinity. Kinetic stopped-flow data showed that DNA-to-protein association is significantly retarded independent of choice of the molecule that is added to the solution, but dissociation depends in a nontrivial way on its size and chemical characteristics. Thus, for this DNA–protein interaction, excluded volume effect does not play the dominant role but instead observed effects are dictated by the chemical properties of the crowder. We propose that surrounding molecules are capable of specific modification of the protein’s hydration shell via soft interactions that, in turn, tune protein–ligand binding dynamics and affinity.</dcterms:abstract>
    <dc:contributor>Schwarz, Patricia</dc:contributor>
    <dc:creator>Köhn, Birgit</dc:creator>
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    <dc:contributor>Kovermann, Michael</dc:contributor>
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