Solitons on H bonds in proteins

F. d'Ovidio, H.G. Bohr, Per-Anker Lindgård

    Research output: Contribution to journalConference articleResearchpeer-review

    Abstract

    A model for soliton dynamics on a hydrogen-bond network in helical proteins is proposed. It employs the formalism-of fully integrable Toda lattices in three dimensions which admit phonons as well as solitons along the hydrogen bonds of the helices. A simulation of the three-dimensional Toda lattice system shows that the solitons are spontaneously created and are stable and moving along the helix axis. A perturbation on one of the three H-bond lines forms solitons on the other H bonds as well. The robust solitary wave may explain very long-lived modes in the frequency range of 100 cm(-1) which are found in recent x-ray laser experiments. The dynamics parameters of the Toda lattice are in accordance with the usual Lennard-Jones parameters used for realistic H-bond potentials in proteins.
    Original languageEnglish
    JournalJOURNAL OF PHYSICS-CONDENSED MATTER
    Volume15
    Issue number18
    Pages (from-to)S1699-S1707
    ISSN0953-8984
    DOIs
    Publication statusPublished - 2003
    EventNanophysics of Life Systems Symposium - Copenhagen, Denmark
    Duration: 21 Jun 200222 Jun 2002

    Conference

    ConferenceNanophysics of Life Systems Symposium
    Country/TerritoryDenmark
    CityCopenhagen
    Period21/06/200222/06/2002

    Fingerprint

    Dive into the research topics of 'Solitons on H bonds in proteins'. Together they form a unique fingerprint.

    Cite this