Abstract
Ab initio quantum mechanics/molecular mechanics (QM/MM) molecular dynamics simulation is a useful tool to calculate thermodynamic properties such as potential of mean force for chemical reactions but intensely time consuming. In this paper, we developed a new method using the internal force correction for low-level semiempirical QM/MM molecular dynamics samplings with a predefined reaction coordinate. As a correction term, the internal force was predicted with a machine learning scheme, which provides a sophisticated force field, and added to the atomic forces on the reaction coordinate related atoms at each integration step. We applied this method to two reactions in aqueous solution and reproduced potentials of mean force at the ab initio QM/MM level. The saving in computational cost is about 2 orders of magnitude. The present work reveals great potentials for machine learning in QM/MM simulations to study complex chemical processes.
Authors
3
- Jingheng Wu (first)
- Lin Shen (additional)
- Weitao Yang (additional)
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Dates
Type | When |
---|---|
Created | 7 years, 10 months ago (Oct. 12, 2017, 10:48 a.m.) |
Deposited | 2 years, 2 months ago (June 19, 2023, 3:41 p.m.) |
Indexed | 1 month ago (July 30, 2025, 7:08 a.m.) |
Issued | 7 years, 10 months ago (Oct. 12, 2017) |
Published | 7 years, 10 months ago (Oct. 12, 2017) |
Published Online | 7 years, 10 months ago (Oct. 12, 2017) |
Published Print | 7 years, 10 months ago (Oct. 28, 2017) |
Funders
1
Foundation for the National Institutes of Health
10.13039/100000009
Region: Americas
gov (Trusts, charities, foundations (both public and private))
Labels
5
- Foundation for the National Institutes of Health, Inc.
- Foundation for the NIH
- Foundation for NIH
- The Foundation for the National Institutes of Health
- FNIH
Awards
1
- R01 GM061870-13
@article{Wu_2017, title={Internal force corrections with machine learning for quantum mechanics/molecular mechanics simulations}, volume={147}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.5006882}, DOI={10.1063/1.5006882}, number={16}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Wu, Jingheng and Shen, Lin and Yang, Weitao}, year={2017}, month=oct }