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相关概念视频

X-ray Crystallography02:18

X-ray Crystallography

23.8K
The size of the unit cell and the arrangement of atoms in a crystal may be determined from measurements of the diffraction of X-rays by the crystal, termed X-ray crystallography.
Diffraction
Diffraction is the change in the direction of travel experienced by an electromagnetic wave when it encounters a physical barrier whose dimensions are comparable to those of the wavelength of the light. X-rays are electromagnetic radiation with wavelengths about as long as the distance between neighboring...
23.8K
X-ray Diffraction of Biological Samples01:10

X-ray Diffraction of Biological Samples

3.8K
X-ray diffraction or XRD is an analytical tool that utilizes X-rays to study ordered structures such as crystalline organic and inorganic samples, polycrystalline materials, proteins, carbohydrates, and drugs.
According to Bragg's law, when X-rays strike the sample positioned on a stage, the rays are  scattered by the electron clouds around the sample atoms. The  X-ray diffraction or scattering is caused by constructive interference of the X-ray waves that reflect off the internal...
3.8K

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相关实验视频

Updated: Jun 18, 2025

Microcrystallography of Protein Crystals and In Cellulo Diffraction
09:35

Microcrystallography of Protein Crystals and In Cellulo Diffraction

Published on: July 21, 2017

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使用比较晶体学统计框架对结构差异的敏感检测.

Doeke R Hekstra1,2, Harrison K Wang1,3, Margaret A Klureza1,4

  • 1Department of Molecular and Cellular Biology.

bioRxiv : the preprint server for biology
|August 2, 2024
PubMed
概括
此摘要是机器生成的。

我们开发了一种新的贝叶斯方法,将深度学习和晶体学理论结合起来,以准确地缩放比较晶体学数据. 这种方法显著提高了蛋白质动态,元素特异信号和药物片段结合的检测.

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Derivatization of Protein Crystals with I3C using Random Microseed Matrix Screening
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Derivatization of Protein Crystals with I3C using Random Microseed Matrix Screening

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Biochemical and Structural Characterization of the Carbohydrate Transport Substrate-binding-protein SP0092
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Biochemical and Structural Characterization of the Carbohydrate Transport Substrate-binding-protein SP0092

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相关实验视频

Last Updated: Jun 18, 2025

Microcrystallography of Protein Crystals and In Cellulo Diffraction
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Microcrystallography of Protein Crystals and In Cellulo Diffraction

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Derivatization of Protein Crystals with I3C using Random Microseed Matrix Screening
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Derivatization of Protein Crystals with I3C using Random Microseed Matrix Screening

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Biochemical and Structural Characterization of the Carbohydrate Transport Substrate-binding-protein SP0092
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Biochemical and Structural Characterization of the Carbohydrate Transport Substrate-binding-protein SP0092

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科学领域:

  • 结构生物学 结构生物学
  • 生物物理学的生物物理.
  • 计算生物学 计算生物学

背景情况:

  • 蛋白质的功能依赖于动态的化学和结构变化.
  • 比较晶体学为各种条件下的这些变化提供了原子层次的洞察力.
  • 实验数据的精确缩放对于比较晶体学至关重要.

研究的目的:

  • 为了改善比较晶体学数据的缩放.
  • 为了提高蛋白质动态和元素特异信号的检测.
  • 为了更好地识别药物碎片的结合.

主要方法:

  • 开发了一个贝叶斯框架,将深度学习与数据扩展的晶体学理论集成在一起.
  • 结合了这个框架与多变量统计理论用于比较晶体学.
  • 应用该方法来分析X射线衍射数据.

主要成果:

  • 在缩放比较晶体学数据方面取得了显著改进.
  • 增强了蛋白质动态和特定元素异常信号的检测.
  • 改善了药物片段结合事件的识别.

结论:

  • 综合贝叶斯方法提供了一个强大的方法来缩放比较晶体学数据.
  • 这一进步促进了对蛋白质动态和相互作用的更准确的研究.
  • 该方法对药物发现和理解蛋白质功能具有前景.