This title appears in the Scientific Report :
2002
Please use the identifier:
http://dx.doi.org/10.1140/epje/i200101159 in citations.
Chiral electrostatic interaction and colesteric liquid crystals of DNA
Chiral electrostatic interaction and colesteric liquid crystals of DNA
Explicit expressions for electrostatic interaction between stiff DNA duplexes of finite length are obtained. These expressions allow for the helical symmetry of charge distribution on DNA molecules and reveal chiral and non-chiral interaction terms. Asymptotic expressions at small twist angles axe a...
Saved in:
Personal Name(s): | Kornyshev, Yu. M. |
---|---|
Leikin, S. / Malinin, S. V. | |
Contributing Institute: |
Energieverfahrenstechnik; IWV-3 |
Published in: | The @European physical journal / E, 7 (2002) S. 83 - 93 |
Imprint: |
Berlin
Springer
2002
|
Physical Description: |
83 - 93 |
DOI: |
10.1140/epje/i200101159 |
Document Type: |
Journal Article |
Research Program: |
Brennstoffzelle |
Series Title: |
European Physical Journal E
7 |
Subject (ZB): | |
Publikationsportal JuSER |
Explicit expressions for electrostatic interaction between stiff DNA duplexes of finite length are obtained. These expressions allow for the helical symmetry of charge distribution on DNA molecules and reveal chiral and non-chiral interaction terms. Asymptotic expressions at small twist angles axe applied to evaluate the cholesteric pitch and the twist elastic constant and their dependence on the length of DNA fragments. These estimates suggest an explanation for the large value of the cholesteric pitch and its nonmonotonic variation with the density of the liquid crystal. An analysis of biaxial correlations rationalizes the driving force of the transition from the cholesteric to hexagonal phase upon dehydration. |