𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Method for free‐energy calculations using iterative techniques

✍ Scribed by Kumar, Shankar; Payne, Philip W.; Vásquez, Maximiliano


Publisher
John Wiley and Sons
Year
1996
Tongue
English
Weight
576 KB
Volume
17
Category
Article
ISSN
0192-8651

No coin nor oath required. For personal study only.

✦ Synopsis


We present here a new iterative technique for reliable estimation of multidimensional free energy and potential of mean force (PMF) values by computer simulation. This method is an extension of the weighted histogram analysis method [S. Kumar et al., I. Comp. Chem., 13, 1011, (199211. We have tested the technique by generating free-energy-based Ramachandran plots and by computing the PMF values for end-to-end distances for several polypeptides using the ECEPP/2 and AMBER force fields.


📜 SIMILAR VOLUMES


Some recent techniques for free energy c
✍ Eric Vanden-Eijnden 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 532 KB

## Abstract A few recent techniques to calculate free energies in the context of molecular dynamics simulations are discussed: temperature‐accelerated molecular dynamics, which is a method to explore fast the important regions in the free energy landscape associated with a set of continuous collect

Multidimensional free-energy calculation
✍ Shankar Kumar; John M. Rosenberg; Djamal Bouzida; Robert H. Swendsen; Peter A. K 📂 Article 📅 1995 🏛 John Wiley and Sons 🌐 English ⚖ 824 KB

The recently formulated weighted histogram analysis method (WHAM)' is an extension of Ferrenberg and Swendsen's multiple histogram technique for freeenergy and potential of mean force calculations. As an illustration of the method, we have calculated the two-dimensional potential of mean force surfa

Ab initio quantum mechanics-based free e
✍ M. Rami Reddy; U. C. Singh; Mark D. Erion 📂 Article 📅 2006 🏛 John Wiley and Sons 🌐 English ⚖ 111 KB

## Abstract A free energy perturbation (FEP) method was developed that uses __ab initio__ quantum mechanics (QM) for treating the solute molecules and molecular mechanics (MM) for treating the surroundings. Like our earlier results using AM1 semi empirical QMs, the __ab initio__ QM/MM‐based FEP met

Three phase flash calculations using fre
✍ M.E. Soares; A.G. Medina; C. McDermott; N. Ashton 📂 Article 📅 1982 🏛 Elsevier Science 🌐 English ⚖ 502 KB

Abslnct-The distillation of systems exhibiting partial miscibility over part of the composition range is growing in interest and the modeling of three phase distillation columns is highly desirable. This paper presents work which has been produced as part of a project directed towards such objectiv

Calculations of relative free energy sur
✍ Cun Xin Wang; Hai Yan Liu; Yun Yu Shi; Fu Hua Huang 📂 Article 📅 1991 🏛 Elsevier Science 🌐 English ⚖ 359 KB

An integration method is presented for calculating, in conjuction with molecular dynamics, free energy differences between states separated in configuration space. A simple model system for liquid neon is used to illustrate the method. The potential of mean force for conformation change is evaluated

Hydration free energy calculations by th
✍ Minoru Saito; Haruki Nakamura 📂 Article 📅 1990 🏛 John Wiley and Sons 🌐 English ⚖ 514 KB

The hydration energy difference between the alanine and glycine zwitter ions was calculated by both the free energy perturbation method and the acceptance ratio method. The calculations were carried out by using different increments of the mutation parameter A , A h = -0.05, -0.10, and -0.20. The fr