Conformational transformations induced by the charge-curvature interaction at finite temperature

Publication: Research - peer-reviewJournal article – Annual report year: 2008

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The role of thermal fluctuations on the conformational dynamics of a single closed filament is studied. It is shown that, due to the interaction between charges and bending degrees of freedom, initially circular aggregates may undergo transformation to polygonal shape. The transition occurs both in the case of hardening and softening charge-bending interaction. In the former case the charge and curvature are smoothly distributed along the chain while in the latter spontaneous kink formation is initiated. The transition to a non-circular conformation is analogous to the phase transition of the second kind.
Original languageEnglish
JournalPhysical Review E (Statistical, Nonlinear, and Soft Matter Physics)
Publication date2008
Volume78
Issue5
Pages051908
ISSN1539-3755
DOIs
StatePublished

Bibliographical note

Copyright 2008 American Physical Society

CitationsWeb of Science® Times Cited: 1

Keywords

  • Biomolecules: structure and physical properties, Charge curvature interaction, Anharmonic lattice modes, Localized modes, DNA cyclization
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