Machine-learning-assisted free energy simulation of solution-phase and enzyme reactions

X Pan, J Yang, R Van, E Epifanovsky, J Ho… - Journal of chemical …, 2021 - ACS Publications
Despite recent advances in the development of machine learning potentials (MLPs) for
biomolecular simulations, there has been limited effort on develo** stable and accurate …

Perspective: Reference-Potential Methods for the Study of Thermodynamic Properties in Chemical Processes: Theory, Applications, and Pitfalls

JN Wang, Y Xue, P Li, X Pan, M Wang… - The journal of …, 2023 - ACS Publications
In silico investigations of enzymatic reactions and chemical reactions in condensed phases
often suffer from formidable computational costs due to a large number of degrees of …

Multireference generalization of the weighted thermodynamic perturbation method

TJ Giese, J Zeng, DM York - The Journal of Physical Chemistry A, 2022 - ACS Publications
We describe the generalized weighted thermodynamic perturbation (gwTP) method for
estimating the free energy surface of an expensive “high-level” potential energy function …

PyDFT-QMMM: A modular, extensible software framework for DFT-based QM/MM molecular dynamics

JP Pederson, JG McDaniel - The Journal of Chemical Physics, 2024 - pubs.aip.org
PyDFT-QMMM is a Python-based package for performing hybrid quantum
mechanics/molecular mechanics (QM/MM) simulations at the density functional level of …

Factors that determine the variation of equilibrium and kinetic properties of QM/MM enzyme simulations: QM region, conformation, and boundary condition

D Demapan, J Kussmann… - Journal of chemical …, 2022 - ACS Publications
To analyze the impact of various technical details on the results of quantum mechanical
(QM)/molecular mechanical (MM) enzyme simulations, including the QM region size …

Tracking the delocalized proton in concerted proton transfer in bulk water

S Yan, B Wang, H Lin - Journal of Chemical Theory and …, 2023 - ACS Publications
A solvated proton in water is often characterized as a charge or structural defect, and it is
important to track its evolution on-the-fly in certain dynamics simulations. Previously, we …

Exploring Routes to Enhance the Calculation of Free Energy Differences via Non-Equilibrium Work SQM/MM Switching Simulations Using Hybrid Charge …

A Schöller, HL Woodcock, S Boresch - Molecules, 2023 - mdpi.com
Non-equilibrium work switching simulations and Jarzynski's equation are a reliable method
for computing free energy differences, Δ A low→ high, between two levels of theory, such as …

Accelerating Ab Initio Quantum Mechanical and Molecular Mechanical (QM/MM) Molecular Dynamics Simulations with Multiple Time Step Integration and a …

X Pan, R Van, E Epifanovsky, J Liu, J Pu… - The Journal of …, 2022 - ACS Publications
Molecular dynamics (MD) simulations employing ab initio quantum mechanical and
molecular mechanical (ai-QM/MM) potentials are considered to be the state of the art, but the …

Quantum vibrational spectroscopy of explicitly solvated thymidine in semiclassical approximation

F Gabas, R Conte, M Ceotto - The journal of physical chemistry …, 2022 - ACS Publications
In this paper, we demonstrate the possibility to perform spectroscopy simulations of solvated
biological species taking into consideration quantum effects and explicit solvation. We …

BAR‐Based Multi‐Dimensional Nonequilibrium Pulling for Indirect Construction of QM/MM Free Energy Landscapes: Varying the QM Region

Z Sun, Z Liu - Advanced Theory and Simulations, 2021 - Wiley Online Library
The indirect free energy simulation at quantum mechanics (QM)/molecular mechanics (MM)
levels provides a feasible alternative to direct QM/MM simulations. The main idea under the …