The Poisson-Boltzmann model for tRNA: Assessment of the calculation set-up and ionic concentration cutoff.
The Poisson-Boltzmann model for tRNA: Assessment of the calculation set-up and ionic concentration cutoff.
复制标题
DOI:
10.1002/jcc.20953
复制
发表时间:
2008-09
影响因子:
3
通讯作者:
Trylska, Joanna
中科院分区:
文献类型:
--
作者:
Gruziel, Magdalena;Grochowski, Pawel;Trylska, Joanna
关键词:
Using tRNA molecule as an example, we evaluate the applicability of the Poisson-Boltzmann model to highly charged systems such as nucleic acids. Particularly, we describe the effect of explicit crystallographic divalent ions and water molecules, ionic strength of the solvent, and the linear approximation to the Poisson-Boltzmann equation on the electrostatic potential and electrostatic free energy. We calculate and compare typical similarity indices and measures, such as Hodgkin index and root mean square deviation. Finally, we introduce a modification to the nonlinear Poisson-Boltzmann equation, which accounts in a simple way for the finite size of mobile ions, by applying a cutoff in the concentration formula for ionic distribution at regions of high electrostatic potentials. We test the influence of this ionic concentration cutoff on the electrostatic properties of tRNA.
登录
查看更多内容
影响因子:
6.6
作者:
Borukhov, I;Andelman, D;Orland, H
通讯作者:
Orland, H
影响因子:
15
作者:
Koculi, Eda;Hyeon, Changbong;Woodson, Sarah A.
通讯作者:
Woodson, Sarah A.
影响因子:
3
作者:
HOLST, MJ;SAIED, F
通讯作者:
SAIED, F
影响因子:
2.2
作者:
CARBO, R;LEYDA, L;ARNAU, M
通讯作者:
ARNAU, M
影响因子:
5.5
作者:
ODIJK, T
通讯作者:
ODIJK, T