Automated Topology Builder Version 3.0: Prediction of Solvation Free Enthalpies in Water and Hexane

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Stroet, Martin
Caron, Bertrand
Visscher, Koen M
Geerke, Daan P
Malde, Alpeshkumar K
Mark, Alan E
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2018
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Abstract

The ability of atomic interaction parameters generated using the Automated Topology Builder and Repository version 3.0 (ATB3.0) to predict experimental hydration free enthalpies (ΔGwater) and solvation free enthalpies in the apolar solvent hexane (ΔGhexane) is presented. For a validation set of 685 molecules the average unsigned error (AUE) between ΔGwater values calculated using the ATB3.0 and experiment is 3.8 kJ·mol-1. The slope of the line of best fit is 1.00, the intercept -1.0 kJ·mol-1, and the R2 0.90. For the more restricted set of 239 molecules used to validate OPLS3 (J. Chem. Theory Comput. 2016, 12, 281-296, DOI: 10.1021/acs.jctc.5b00864) the AUE using the ATB3.0 is just 2.7 kJ·mol-1 and the R2 0.93. A roadmap for further improvement of the ATB parameters is presented together with a discussion of the challenges of validating force fields against the available experimental data.

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Journal of Chemical Theory and Computation

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14

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11

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This document is the Postprint: Accepted Manuscript version of a Published Work that appeared in final form in Journal of Chemical Theory and Computation, copyright 2018 American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acs.jctc.8b00768

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Theoretical and computational chemistry

Cheminformatics and quantitative structure-activity relationships

Biomolecular modelling and design

Science & Technology

Physical Sciences

Chemistry, Physical

Physics, Atomic, Molecular & Chemical

Chemistry

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Stroet, M; Caron, B; Visscher, KM; Geerke, DP; Malde, AK; Mark, AE, Automated Topology Builder Version 3.0: Prediction of Solvation Free Enthalpies in Water and Hexane, Journal of Chemical Theory and Computation, 2018, 14 (11), pp. 5834-5845

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