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相关概念视频

X-ray Diffraction of Biological Samples01:10

X-ray Diffraction of Biological Samples

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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...
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X-ray Crystallography02:18

X-ray Crystallography

23.9K
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...
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An All-in-one Sample Holder for Macromolecular X-ray Crystallography with Minimal Background Scattering
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在宏分子晶体学中识别和避免辐射损伤.

Kathryn L Shelley1, Elspeth F Garman1

  • 1Department of Biochemistry, University of Oxford, Dorothy Crowfoot Hodgkin Building, South Parks Road, Oxford OX1 3QU, United Kingdom.

Acta crystallographica. Section D, Structural biology
|May 3, 2024
PubMed
概括

辐射损伤阻碍了宏分子晶体学结构解决方案. 本文详细介绍了在整个晶体结构溶液过程中识别和减轻辐射损伤影响的方法.

科学领域:

  • 晶体学 晶体学是指结晶学.
  • 结构生物学 结构生物学
  • 生物物理学的生物物理.

背景情况:

  • 辐射损伤是宏分子晶体学的一个重大挑战.
  • 损坏的文物可能导致错误的生物学解释,并限制数据分辨率.
  • 严重的辐射损伤可以阻止成功的结构确定.

研究的目的:

  • 提供关于识别辐射损害的全面指南.
  • 概述了减轻辐射损害影响的策略.
  • 为了解决大分子晶体结构溶液管道的所有阶段的辐射损伤.

主要方法:

  • 讨论辐射损伤文物识别技术.
  • 介绍数据收集期间适用的缓解策略.
  • 解释在结构改进过程中处理辐射损伤的方法.

主要成果:

  • 可以通过特定的数据分析和视觉检查来识别辐射损伤.
  • 在数据收集过程中采取主动措施,可以最大限度地减少辐射引起的损害.
  • 收集后的加工和精炼策略可以进一步解决残留损害.

结论:

关键词:
网络 网络 网络 网络在Bnet百分位数.全球范围的损害损害全球范围的损害辐射损伤 辐射损伤特定的损害损害的特定损害

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  • 对辐射损伤的有效管理对于准确的宏分子结构确定至关重要.
  • 在整个管道中实施缓解策略可以提高数据质量和生物见解.
  • 了解和解决辐射损伤可以提高结晶学结果的可靠性.