Volume 88, Number 6, December 2009
|Number of page(s)||5|
|Section||Interdisciplinary Physics and Related Areas of Science and Technology|
|Published online||21 December 2009|
Energy transfer in nonlinear network models of proteins
Ecole Polytechnique Fédérale de Lausanne, Laboratoire de Biophysique Statistique, ITP-SB - BSP-720, CH-1015 Lausanne, Switzerland
2 Laboratoire U3B, UMR 6204 du CNRS, Faculté des Sciences et des Techniques - 2, rue de la Houssinière, 44322 Nantes Cedex 3, France, EU
Corresponding authors: Francesco.Piazza@epfl.ch Yves-Henri.Sanejouand@univ-nantes.fr
Accepted: 18 November 2009
We investigate how nonlinearity and topological disorder affect the energy relaxation of local kicks in coarse-grained network models of proteins. We find that nonlinearity promotes long-range, coherent transfer of substantial energy to specific functional sites, while depressing transfer to generic locations. In some cases, transfer is mediated by the self-localization of discrete breathers at distant locations from the kick, acting as efficient energy-accumulating centers.
PACS: 87.15.-v – Biomolecules: structure and physical properties / 63.20.Pw – Localized modes / 05.45.-a – Nonlinear dynamics and chaos
© EPLA, 2009
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