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 language | English |
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Journal | Journal of Physics Condensed Matter |
Volume | 15 |
Issue number | 18 |
Pages (from-to) | S1699-S1707 |
ISSN | 0953-8984 |
DOIs | |
Publication status | Published - 2003 |
Event | Nanophysics of Life Systems Symposium - Copenhagen, Denmark Duration: 21 Jun 2002 → 22 Jun 2002 |
Conference
Conference | Nanophysics of Life Systems Symposium |
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Country/Territory | Denmark |
City | Copenhagen |
Period | 21/06/2002 → 22/06/2002 |