Conformational transformations induced by the charge-curvature interaction: Mean-field approach

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Yu. B. Gaididei
Bogolyubov Institute for Theoretical Physics, Metrologichna Street 14 B, 01413, Kiev, Ukraine

P. L. Christiansen
Informatics and Mathematical Modeling and Department of Physics, The Technical University of Denmark, DK-2800 Lyngby, Denmark

W. J. Zakrzewski
Department of Mathematical Sciences, University of Durham, Science Laboratories, South Road, Durham DH1 3LE, England

Received 21 March 2005; published 16 August 2006

Asimple phenomenological model for describing the conformational dynamics of biologicalmacromolecules via the nonlinearity-induced instabilities is proposed. It is shownthat the interaction between charges and bending degrees of freedomof closed molecular aggregates may act as drivers giving impetusto conformational dynamics of biopolymers. It is demonstrated that initiallycircular aggregates may undergo transformation to polygonal shapes and possibleapplication to aggregates of bacteriochlorophyl a molecules is considered.

URL:	http://link.aps.org/doi/10.1103/PhysRevE.74.021914
DOI:	10.1103/PhysRevE.74.021914
PACS:	87.15.-v; 63.20.Pw; 63.20.Ry 87.15.-v Biomolecules: structure and physical properties 63.20.Pw Localized modes in crystal lattices 63.20.Ry Anharmonic lattice modes YEAR: 2006
KEYWORDS:	molecular configurations, configuration interactions, macromolecules, molecular biophysics

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