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Adaptive quantum/molecular mechanics: what have we learned, where are we, and where do we go from here?: Adaptive QM/MM

Journal Article · · Wiley Interdisciplinary Reviews: Computational Molecular Science
DOI:https://doi.org/10.1002/wcms.1310· OSTI ID:1461758
Adaptive quantum-mechanics/molecular-mechanics (QM/MM) methods feature on-the-fly reclassification of atoms as QM or MM during a molecular dynamics(MD) simulation, allowing the location and contents of the QM subsystem to be dynamically updated as needed. Such flexibility is a distinct advantage over conventional QM/MM, where a ‘static’ boundary is retained between the QM and MM subsystems. The ‘dynamic’ boundary in adaptive QM/MM allows a finite-size QM to sustain simulations with an arbitrary length of time. Here, to ensure smooth transitions between QM and MM, the energy or forces are interpolated.Special treatments are applied so that artifacts are eliminated or minimized.Recent developments have shed light on the relationship between the adaptive algorithms that describe Hamiltonian and non-Hamiltonian systems. Originally developed to model an ion solvated in bulk solvent, adaptive QM/MM has been enhanced in many aspects, including the treatment of molecular fragments in macromolecules, monitoring molecules entering/leaving binding sites, and tracking proton transfer via the Grotthuss mechanism. Because the size of the QM region can be set as small as possible in adaptive QM/MM, the computational costs can be kept low. Small QM subsystems also facilitate the utilization of high-level QM theory and long simulation time, which can potentially lead to new insights.
Research Organization:
Lawrence Berkeley National Laboratory, Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC).
Sponsoring Organization:
USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR) (SC-21)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1461758
Journal Information:
Wiley Interdisciplinary Reviews: Computational Molecular Science, Journal Name: Wiley Interdisciplinary Reviews: Computational Molecular Science Journal Issue: 5 Vol. 7; ISSN 1759-0876
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

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Adaptive QM/MM for Molecular Dynamics Simulations: 5. On the Energy-Conserved Permuted Adaptive-Partitioning Schemes journal August 2018
Polarizable ab initio QM/MM Study of the Reaction Mechanism of N-tert-Butyloxycarbonylation of Aniline in [EMIm][BF4] journal October 2018
Simulation of Many-Electron Systems That Exchange Matter with the Environment: Simulation of Many-Electron Systems That Exchange Matter with the Environment journal August 2018
Computational Studies of Photocatalysis with Metal–Organic Frameworks journal September 2019
Yoink: An interaction-based partitioning API : An Interaction-Based Partitioning API journal January 2018
Advances and challenges in modeling solvated reaction mechanisms for renewable fuels and chemicals journal August 2019
Multiscale modelling of photoinduced processes in composite systems journal April 2019
Brain grants permission of access to Zika virus but denies entry to drugs: a molecular modeling perspective to infiltrate the boundary journal January 2017
Absolute proton hydration free energy, surface potential of water, and redox potential of the hydrogen electrode from first principles: QM/MM MD free-energy simulations of sodium and potassium hydration journal June 2018
Analytic gradient for the QM/MM-Ewald method using charges derived from the electrostatic potential: Theory, implementation, and application to ab initio molecular dynamics simulation of the aqueous electron journal April 2019
Interfacing CRYSTAL/AMBER to Optimize QM/MM Lennard–Jones Parameters for Water and to Study Solvation of TiO2 Nanoparticles journal November 2018

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