Journal Article PreJuSER-45671

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DNA condensation and redissolution: interaction between overcharged DNA molecules

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2005
IOP Publ. Bristol

Journal of physics / Condensed matter 17, s1827 - s1840 () [10.1088/0953-8984/17/20/012]

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Abstract: The effective DNA-DNA interaction force is calculated by computer simulations with explicit tetravalent counterions and monovalent salt. For overcharged DNA molecules, the interaction force shows a double-minimum structure: The positions and depths of these minima are regulated by the counterion density in the bulk. Using two-dimensional lattice sums and free energy perturbation theories, the coexisting phases for DNA bundles are calculated. A DNA condensation and redissolution transition and a stable mesocrystal with an intermediate lattice constant for high counterion concentration are obtained.

Keyword(s): J


Note: Record converted from VDB: 12.11.2012

Contributing Institute(s):
  1. Theorie II (IFF-TH-II)
Research Program(s):
  1. Kondensierte Materie (M02)

Appears in the scientific report 2005
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 Record created 2012-11-13, last modified 2024-06-10