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Nematic Ordering of Polymers in Confined Geometry Applied to DNA Packaging in Viral Capsids.

Oskolkov, Nikolay LU ; Linse, Per LU ; Potemkin, Igor I and Khokhlov, Alexei R (2011) In The Journal of Physical Chemistry Part B 115(3). p.422-432
Abstract
A density functional theory of the spatial distribution and biaxial nematic order of polymers of arbitrary length and rigidity inside a spherical cavity is proposed. The local order of different chain segments is considered as an alignment to a spatially varying director field of cylindrical symmetry. The steric interactions are taken into account in the second virial approximation. Polymer density and orientational order distributions inside the spherically cavity are the principal results. It was found that short and flexible polymers were located at the center of the sphere and were orientationaly disordered. Upon increasing polymer length and/or polymer rigidity, the location of the polymer was continuously shifted toward the surface... (More)
A density functional theory of the spatial distribution and biaxial nematic order of polymers of arbitrary length and rigidity inside a spherical cavity is proposed. The local order of different chain segments is considered as an alignment to a spatially varying director field of cylindrical symmetry. The steric interactions are taken into account in the second virial approximation. Polymer density and orientational order distributions inside the spherically cavity are the principal results. It was found that short and flexible polymers were located at the center of the sphere and were orientationaly disordered. Upon increasing polymer length and/or polymer rigidity, the location of the polymer was continuously shifted toward the surface of the spherical cavity and the polymer segments became gradually more aligned. Parameters have been selected to model the behavior of genomes in spherical viral capsids. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
The Journal of Physical Chemistry Part B
volume
115
issue
3
pages
422 - 432
publisher
The American Chemical Society
external identifiers
  • wos:000286306600003
  • pmid:21186830
  • scopus:78751666929
ISSN
1520-5207
DOI
10.1021/jp108461z
language
English
LU publication?
yes
id
8ff218e7-3d62-4d35-93bb-b5236d6bd2ab (old id 1755775)
date added to LUP
2011-01-11 16:41:45
date last changed
2017-08-20 04:13:27
@article{8ff218e7-3d62-4d35-93bb-b5236d6bd2ab,
  abstract     = {A density functional theory of the spatial distribution and biaxial nematic order of polymers of arbitrary length and rigidity inside a spherical cavity is proposed. The local order of different chain segments is considered as an alignment to a spatially varying director field of cylindrical symmetry. The steric interactions are taken into account in the second virial approximation. Polymer density and orientational order distributions inside the spherically cavity are the principal results. It was found that short and flexible polymers were located at the center of the sphere and were orientationaly disordered. Upon increasing polymer length and/or polymer rigidity, the location of the polymer was continuously shifted toward the surface of the spherical cavity and the polymer segments became gradually more aligned. Parameters have been selected to model the behavior of genomes in spherical viral capsids.},
  author       = {Oskolkov, Nikolay and Linse, Per and Potemkin, Igor I and Khokhlov, Alexei R},
  issn         = {1520-5207},
  language     = {eng},
  number       = {3},
  pages        = {422--432},
  publisher    = {The American Chemical Society},
  series       = {The Journal of Physical Chemistry Part B},
  title        = {Nematic Ordering of Polymers in Confined Geometry Applied to DNA Packaging in Viral Capsids.},
  url          = {http://dx.doi.org/10.1021/jp108461z},
  volume       = {115},
  year         = {2011},
}