A new concise expression for the free energy of a reaction coordinate

被引:45
作者
Schlitter, J [1 ]
Klähn, M [1 ]
机构
[1] Ruhr Univ Bochum, Lehrstuhl Biophys, D-44780 Bochum, Germany
关键词
D O I
10.1063/1.1534578
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
For processes that can be parametrized by a reaction coordinate, the calculation of the free energy against this coordinate is the first step towards equilibrium constants and transition rates. We present a new concise expression for the free energy that is computed from data sampled at a fixed (constrained) reaction coordinate. It is consistent with previous theories and satisfies a more general criterion for free energy profiles. (C) 2003 American Institute of Physics.
引用
收藏
页码:2057 / 2060
页数:4
相关论文
共 10 条
[1]   Calculating free energies using average force [J].
Darve, E ;
Pohorille, A .
JOURNAL OF CHEMICAL PHYSICS, 2001, 115 (20) :9169-9183
[2]   Free energy from molecular dynamics with multiple constraints [J].
Den Otter, WK ;
Briels, WJ .
MOLECULAR PHYSICS, 2000, 98 (12) :773-781
[3]   The calculation of free-energy differences by constrained molecular-dynamics simulations [J].
den Otter, WK ;
Briels, WJ .
JOURNAL OF CHEMICAL PHYSICS, 1998, 109 (11) :4139-4146
[4]   CLASSICAL STATISTICAL-MECHANICS OF CONSTRAINTS - THEOREM AND APPLICATION TO POLYMERS [J].
FIXMAN, M .
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 1974, 71 (08) :3050-3053
[5]  
Mulders T, 1996, J CHEM PHYS, V104, P4869, DOI 10.1063/1.471182
[6]   ESTIMATION OF ABSOLUTE AND RELATIVE ENTROPIES OF MACROMOLECULES USING THE COVARIANCE-MATRIX [J].
SCHLITTER, J .
CHEMICAL PHYSICS LETTERS, 1993, 215 (06) :617-621
[7]   Distance-type reaction coordinates for modelling activated processes [J].
Schlitter, J ;
Swegat, W ;
Mülders, T .
JOURNAL OF MOLECULAR MODELING, 2001, 7 (06) :171-177
[8]   Free energy from constrained molecular dynamics [J].
Sprik, M ;
Ciccotti, G .
JOURNAL OF CHEMICAL PHYSICS, 1998, 109 (18) :7737-7744
[9]  
SWEGAT W, UNPUB
[10]  
VANGUNSTEREN WF, 1989, COMPUTER SIMULATIONS, V1, P27