This title appears in the Scientific Report :
2007
Please use the identifier:
http://dx.doi.org/10.1021/jp074166z in citations.
Effect of a Low-Dielectric Interior on DNA Electrostatic Response to Twisting and Bending
Effect of a Low-Dielectric Interior on DNA Electrostatic Response to Twisting and Bending
We study the effects of a low-dielectric core of rod-like macromolecules on their electrostatic persistence lengths. We use the exact solution of the linear Poisson-Boltzmann equation for the potential of a charge on the surface of a low-dielectric cylinder. We apply the results to the B-DNA molecul...
Saved in:
Personal Name(s): | Cherstvy, A. G. |
---|---|
Contributing Institute: |
Theorie der Weichen Materie und Biophysik; IFF-2 |
Published in: |
The @journal of physical chemistry |
Imprint: |
Washington, DC
Soc.
2007
|
Physical Description: |
12933 - 12937 |
DOI: |
10.1021/jp074166z |
PubMed ID: |
17941661 |
Document Type: |
Journal Article |
Research Program: |
Kondensierte Materie |
Series Title: |
Journal of Physical Chemistry B
111 |
Subject (ZB): | |
Publikationsportal JuSER |
We study the effects of a low-dielectric core of rod-like macromolecules on their electrostatic persistence lengths. We use the exact solution of the linear Poisson-Boltzmann equation for the potential of a charge on the surface of a low-dielectric cylinder. We apply the results to the B-DNA molecule, modeled as a double helical array of discrete charges wound on the surface of a low-dielectric rod. For this charge geometry, we calculate the change in the electrostatic twist persistence as compared to DNA with a water-permeable core. We also discuss possible effects of the low-dielectric molecular core on DNA bending persistence. |