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- W1789794037 abstract "We propose an analytic approach for calculating the electrostatic energy of proteins or protein complexes in aqueous solution. This method, termed CVCEL (Circular Variance Continuum ELectrostatics), is fitted to Poisson calculations and is able to reproduce the corresponding energies for different choices of solute dielectric constant. CVCEL thus treats both solute charge interactions and charge self-energies, and it can also deal with salt solutions. Electrostatic damping notably depends on the degree of solvent exposure of the charges, quantified here in terms of circular variance, a measure that reflects the vectorial distribution of the neighbors around a given center. CVCEL energies can be calculated rapidly and have simple analytical derivatives. This approach avoids the need for calculating effective atomic volumes or Born radii. After describing how the method was developed, we present test results for coarse-grain proteins of different shapes and sizes, using different internal dielectric constants and different salt concentrations and also compare the results with those from simple distance-dependent models. We also show that the CVCEL approach can be used successfully to calculate the changes in electrostatic energy associated with changes in protein conformation or with protein-protein binding." @default.
- W1789794037 created "2016-06-24" @default.
- W1789794037 creator A5027973612 @default.
- W1789794037 creator A5091509784 @default.
- W1789794037 date "2015-12-28" @default.
- W1789794037 modified "2023-10-18" @default.
- W1789794037 title "Improving the treatment of coarse-grain electrostatics: CVCEL" @default.
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- W1789794037 doi "https://doi.org/10.1063/1.4933434" @default.
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