Slow Relaxation Process in DNA
Slow Relaxation Process in DNA
复制标题
DNA 中的缓慢弛豫过程
DOI:
--
复制
发表时间:
2001
期刊:
影响因子:
--
通讯作者:
A. Dianoux
中科院分区:
文献类型:
--
作者:
A. Sokolov;H. Grimm;A. Kisliuk;A. Dianoux
A dynamic transition at temperatures ∼200–230K is observed in manyhydrated bio-polymers. It shows up as a sharp increase of the mean-squaredatomic displacements above this temperature range. We present neutronscattering data of DNA at different levels of hydration. The analysis showsthat the dynamic transition in DNA is related to a slow relaxation processin the MHz-GHz frequency range. This slow relaxation process iscompletely suppressed in the dry DNA sample where no dynamic transitionwas observed. The nature of the slow process is discussed. We ascribe it toa global relaxation of DNA molecule that involves cooperative motion ofmany base-pairs and backbone.
DOI:
10.1073/pnas.89.7.2902
发表时间:
1992-04
影响因子:
11.1
作者:
G. Nienhaus;J. Mourant;H. Frauenfelder
通讯作者:
G. Nienhaus;J. Mourant;H. Frauenfelder
影响因子:
2.9
作者:
Hogan,ME;Jardetzky,O
通讯作者:
Jardetzky,O