一个基于神经网络的一般图形神经网络隐性溶解模型,用于水中的有机分子
Paul Katzberger1, Sereina Riniker1
1Department of Chemistry and Applied Biosciences, ETH Zürich Vladimir-Prelog-Weg 2 8093 Zürich Switzerland sriniker@ethz.ch.
Chemical science
|July 19, 2024
概括
一个新的机器学习 (ML) 模型准确地预测了水中的有机分子的溶解效应. 这种可转移的ML隐性溶剂模型与显式溶剂的精度相匹配,加速分子动力学模拟.
科学领域:
- 计算化学是一种计算化学.
- 分子动力学模拟的模拟.
- 机器学习应用程序 机器学习应用程序
背景情况:
- 分子动力学 (MD) 模拟为分子行为提供了原子级的洞察力,这对于药物开发至关重要.
- 准确的溶解效应建模对于MD模拟至关重要,明确的溶剂方法是准确的,但计算成本昂贵.
- 现有的隐性溶剂模型缺乏准确性,最近的机器学习 (ML) 方法面临着计算成本和可转移性方面的挑战.
研究的目的:
- 为有机小分子开发一种可转移的基于机器学习 (ML) 的隐性溶剂模型.
- 为了达到与明确溶剂模拟可比的精度,同时显著降低计算成本.
- 为了在水环境中实现更快,更可靠的分子动力学模拟.
主要方法:
- 开发一种基于ML的新型隐性溶剂模型.
- 在3000万个分子结构的大型和多样化的数据集上训练模型.
- 根据参考计算进行验证,并与明确溶剂模拟进行比较.
主要成果:
- 开发的ML模型表现出高精度,与计算密集的显式溶剂模拟相提并论.
- 与传统方法相比,该模型的采样率提高了多达18倍.
- 该模型对水中的有机小分子具有出色的可转移性.
结论:
- 基于ML的隐性溶剂模型代表了计算化学的重大进步.
- 这种方法为研究分子动态中的溶解效应提供了一个计算效率高,准确的替代方案.
- 该模型有可能加速药物发现和材料科学等领域的研究.
相关概念视频
Entropy and Solvation
7.0K
The process of surrounding a solute with solvent is called solvation. It involves evenly distributing the solute within the solvent. The rule of thumb for determining a solvent for a given compound is that like dissolves like. A good solvent has molecular characteristics similar to those of the compound to be dissolved. For example, polar solutions dissolve polar solutes, and apolar solvents dissolve apolar solutes. A polar solvent is a solvent that has a high dielectric constant (ϵ...
7.0K
Chemical Shift: Internal References and Solvent Effects
627
In an NMR sample, precise measurement of the absolute absorption frequencies of nuclei is difficult. A standard internal reference compound is added, and the frequency difference between the reference signal and sample signals is measured.
The internal reference compound generally used in NMR spectroscopy is tetramethylsilane (TMS). TMS is preferred because it is chemically inert, soluble in NMR solvents, and easily removable. Also, the highly shielded methyl protons in TMS yield an intense...
The internal reference compound generally used in NMR spectroscopy is tetramethylsilane (TMS). TMS is preferred because it is chemically inert, soluble in NMR solvents, and easily removable. Also, the highly shielded methyl protons in TMS yield an intense...
627
Molecular Models
38.2K
Physical models representing molecular architectures of chemical compounds play essential roles in understanding chemistry. The use of molecular models makes it easier to visualize the structures and shapes of atoms and molecules.
38.2K
Predicting Molecular Geometry
34.2K
VSEPR Theory for Determination of Electron Pair Geometries
34.2K
Solvating Effects
7.4K
An understanding of the solvating effect helps rationalize the relation between solvation and acidity of the compound. In addition, this also explains the relative stability of conjugate bases for compounds with different pKa values. This lesson details, in-depth, the principle of solvating effects. The strength of an acid and the stability of its corresponding conjugate base are determined using pKa values. This observed relationship is a consequence of solvation, which is the interaction...
7.4K
Solvents
64.5K
A solvent is a substance, most often a liquid, that can dissolve other substances. Here, the substance being dissolved is called a solute. When a solvent and a solute combine, they form a solution - a homogenous mixture of both the solvent and the solute. Water is a universal biological solvent. Its polar structure allows it to dissolve many other polar compounds. The ability of water to dissolve is governed by a balance between water molecules binding to each other and binding to the solute.
A...
A...
64.5K


