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Hydrophobic effects on multivalent-salt-induced self-condensation of DNA

J. Chem. Phys. 131, 161103 (2009); doi:10.1063/1.3256982

Published 26 October 2009

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Tomonari Sumi, Chiaki Suzuki, and Hideo Sekino
Department of Knowledge-based Information Engineering, Toyohashi University of Technology, Tempaku-cho, Toyohashi 441-8580, Japan
Hydrophobic effects on multivalent-salt-induced self-condensation of a single polyelectrolyte chain such as DNA are investigated through a multiscale coarse-grained simulation based on density functional theory. We show that the water-mediated hydrophobic effect that was enhanced by hydration of multivalent salts plays an essential role in self-condensation of DNA. The self-condensation is interpreted as an entropy-driven compaction due to the hydration entropy gain. ©2009 American Institute of Physics
History: Received 6 September 2009; accepted 8 October 2009; published 26 October 2009
Permalink: http://link.aip.org/link/?JCPSA6/131/161103/1
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KEYWORDS and PACS

Keywords
PACS
  • 87.14.gk
    DNA
  • 87.15.B-
    Structure of biomolecules
  • 87.15.R-
    Biochemical reactions and kinetics
  • 36.20.Fz
    Macromolecular constitution (chains and sequences)
  • YEAR: 2009

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PUBLICATION DATA

ISSN:
0021-9606 (print)   1089-7690 (online)
Publisher:
AIP is a member of CrossRef AIP

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