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A method to construct the dynamic landscape of a bio-membrane with experiment and simulation

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  • Albert A. Smith

    (Leipzig University)

  • Alexander Vogel

    (Leipzig University)

  • Oskar Engberg

    (Leipzig University)

  • Peter W. Hildebrand

    (Leipzig University)

  • Daniel Huster

    (Leipzig University)

Abstract

Biomolecular function is based on a complex hierarchy of molecular motions. While biophysical methods can reveal details of specific motions, a concept for the comprehensive description of molecular dynamics over a wide range of correlation times has been unattainable. Here, we report an approach to construct the dynamic landscape of biomolecules, which describes the aggregate influence of multiple motions acting on various timescales and on multiple positions in the molecule. To this end, we use 13C NMR relaxation and molecular dynamics simulation data for the characterization of fully hydrated palmitoyl-oleoyl-phosphatidylcholine bilayers. We combine dynamics detector methodology with a new frame analysis of motion that yields site-specific amplitudes of motion, separated both by type and timescale of motion. In this study, we show that this separation allows the detailed description of the dynamic landscape, which yields vast differences in motional amplitudes and correlation times depending on molecular position.

Suggested Citation

  • Albert A. Smith & Alexander Vogel & Oskar Engberg & Peter W. Hildebrand & Daniel Huster, 2022. "A method to construct the dynamic landscape of a bio-membrane with experiment and simulation," Nature Communications, Nature, vol. 13(1), pages 1-13, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-021-27417-y
    DOI: 10.1038/s41467-021-27417-y
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