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相关概念视频

¹H NMR of Conformationally Flexible Molecules: Temporal Resolution00:52

¹H NMR of Conformationally Flexible Molecules: Temporal Resolution

852
At room temperature, the chair conformer of cyclohexane undergoes rapid ring flipping between two equivalent chair conformers at a rate of approximately 105 times per second. These two chair conformers are in equilibrium. The rapid ring flipping results in the interconversion of the axial proton to an equatorial proton and an equatorial to the axial proton. Such interconversions are too rapid and cannot be detected on the NMR timescale. Hence, the NMR spectrometer cannot distinguish between the...
852

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相关实验视频

Updated: Jul 8, 2025

Multiscale Sampling of a Heterogeneous Water/Metal Catalyst Interface using Density Functional Theory and Force-Field Molecular Dynamics
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用分子力场进行可差分的旋转器采样.

Congzhou M Sha1,2, Jian Wang2, Nikolay V Dokholyan1,2,3,4,5

  • 1Department of Engineering Science and Mechanics, Penn State University, University Park, PA USA.

Briefings in bioinformatics
|December 14, 2023
PubMed
概括
此摘要是机器生成的。

博尔兹曼发生器是一种神经网络方法,为研究宏分子结构和功能提供了比传统分子动力学 (MD) 更快的热力学平衡的趋同.

关键词:
博尔茨曼发电机是什么意思可以区分的编程编程.分子动力学分子动力学神经网络的神经网络的神经网络美国轮回采样采样统计力学的统计力学.

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Structure-Based Simulation and Sampling of Transcription Factor Protein Movements along DNA from Atomic-Scale Stepping to Coarse-Grained Diffusion
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Investigating Receptor-ligand Systems of the Cellulosome with AFM-based Single-molecule Force Spectroscopy
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相关实验视频

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科学领域:

  • 计算生物学是一种计算生物学.
  • 结构生物学是结构生物学.
  • 在科学领域的机器学习.

背景情况:

  • 分子动力学 (MD) 是探索宏分子结构和功能的关键计算工具.
  • 博尔茨曼发生器为模拟分子系统提供了一个基于神经网络的新型替代MD.
  • 目前理论和计算可行性的局限性阻碍了博尔茨曼发电机的广泛采用.

研究的目的:

  • 为博尔茨曼发电机建立一个强大的数学基础.
  • 证明博尔茨曼发电机作为传统MD的替代品的速度和可行性.
  • 为利用神经网络在分子能量景观探索中提供一个工具包.

主要方法:

  • 为博尔茨曼发生器开发数学框架.
  • 训练生成神经网络以取代分子模拟中的基于时间的集成.
  • 将开发的方法应用于复杂的宏分子,包括蛋白质.

主要成果:

  • 这项研究为博尔茨曼发生器提供了基础的数学基础.
  • 与传统的MD相比,证明博尔茨曼发电机可以实现更快的趋同到热力学平衡.
  • 这种方法被证明对像蛋白质这样的复杂宏分子是计算上可行的.

结论:

  • 博尔茨曼发生器,在强大的数学基础的支持下,可以在特定应用中有效地取代传统的MD.
  • 这项工作显著提高了基于神经网络的分子模拟方法的可用性.
  • 提供了一个全面的工具包,用于利用神经网络探索分子能量景观.