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- W2007965478 abstract "The efficient and accurate characterization of solvent effects is a key element in the theoretical and computational study of biological problems. Implicit solvent models, particularly generalized Born (GB) continuum electrostatics, have emerged as an attractive tool to study the structure and dynamics of biomolecules in various environments. Despite recent advances in this methodology, there remain limitations in the parametrization of many of these models. In the present work, we demonstrate that it is possible to achieve a balanced implicit solvent force field by further optimizing the input atomic radii in combination with adjusting the protein backbone torsional energetics. This parameter optimization is guided by the potentials of mean force (PMFs) between amino acid polar groups, calculated from explicit solvent free energy simulations, and by conformational equilibria of short peptides, obtained from extensive folding and unfolding replica exchange molecular dynamics (REX-MD) simulations. Through the application of this protocol, the delicate balance between the competing solvation forces and intramolecular forces appears to be better captured, and correct conformational equilibria for a range of both helical and beta-hairpin peptides are obtained. The same optimized force field also successfully folds both beta-hairpin trpzip2 and mini-protein Trp-Cage, indicating that it is quite robust. Such a balanced, physics-based force field will be highly applicable to a range of biological problems including protein folding and protein structural dynamics." @default.
- W2007965478 created "2016-06-24" @default.
- W2007965478 creator A5030884127 @default.
- W2007965478 creator A5032839759 @default.
- W2007965478 creator A5060440052 @default.
- W2007965478 date "2006-03-01" @default.
- W2007965478 modified "2023-10-10" @default.
- W2007965478 title "Balancing Solvation and Intramolecular Interactions: Toward a Consistent Generalized Born Force Field" @default.
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- W2007965478 doi "https://doi.org/10.1021/ja057216r" @default.
- W2007965478 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/2596729" @default.
- W2007965478 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/16536547" @default.
- W2007965478 hasPublicationYear "2006" @default.
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