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arXiv 1607.04594math.NAcs.NAphysics.comp-phq-bio.BM
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精确、可靠和可靠的Poisson-Boltzmann溶剂化能计算

Accurate, robust and reliable calculations of Poisson-Boltzmann solvation energies

Michigan State University(密歇根州立大学)

Bao Wang, Guowei Wei

AI总结:

本文提出了一种基于Green函数处理奇异电荷的粗网格PB求解器,通过匹配界面和边界方法处理几何奇点,并利用后验静电势场扩展计算反应场能量,实现了求解器的网格大小无关性。

摘要:

开发精确的Poisson-Boltzmann(PB)模型求解器是使PB模型适用于隐式溶剂模拟的第一步。减少网格大小对求解器性能的影响有助于提高求解器的速度,并为溶质分子提供准确的静电学分析。在本工作中,我们探索了一种基于Green函数处理奇异电荷的粗网格PB求解器,结合匹配界面和边界(MIB)方法处理几何奇点,以及后验静电势场扩展计算反应场能量。我们使之前的PB软件MIBPB更加稳健,并提供了几乎网格大小无关的反应场能量计算。大量数值测试验证了MIBPB软件的网格大小无关性优势。MIBPB软件的优势使得PB求解器的加速直接来自数值算法而非高级计算机架构的利用。此外,所呈现的MIBPB软件作为免费在线服务器提供。

英文摘要:

Developing accurate solvers for the Poisson Boltzmann (PB) model is the first step to make the PB model suitable for implicit solvent simulation. Reducing the grid size influence on the performance of the solver benefits to increasing the speed of solver and providing accurate electrostatics analysis for solvated molecules. In this work, we explore the accurate coarse grid PB solver based on the Green's function treatment of the singular charges, matched interface and boundary (MIB) method for treating the geometric singularities, and posterior electrostatic potential field extension for calculating the reaction field energy. We made our previous PB software, MIBPB, robust and provides almost grid size independent reaction field energy calculation. Large amount of the numerical tests verify the grid size independence merit of the MIBPB software. The advantage of MIBPB software directly make the acceleration of the PB solver from the numerical algorithm instead of utilization of advanced computer architectures. Furthermore, the presented MIBPB software is provided as a free online sever.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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