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相关概念视频

Atomic Force Microscopy01:08

Atomic Force Microscopy

3.3K
Atomic force microscopy (AFM) is a type of scanning probe microscopy that can analyze topographic details of various specimens like ceramics, glass, polymers, and biological samples. AFM offers over 1000 times more resolution than the optical imaging system. Images generated from AFM are three-dimensional surface profiles, offering an advantage over the flat, two-dimensional images from other imaging techniques.
The AFM Probe
The probe is regarded as the heart of any AFM setup and comprises the...
3.3K

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相关实验视频

Updated: May 27, 2025

Measuring the Mechanical Properties of Living Cells Using Atomic Force Microscopy
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Measuring the Mechanical Properties of Living Cells Using Atomic Force Microscopy

Published on: June 27, 2013

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一个结构生物学兼容的文件格式,用于原子力显微镜.

Yining Jiang1,2, Zhaokun Wang2,3, Simon Scheuring4,5

  • 1Biochemistry & Structural Biology, Cell & Developmental Biology, and Molecular Biology (BCMB) Program, Weill Cornell Graduate School of Medical Sciences, New York, NY, USA.

Nature communications
|February 15, 2025
PubMed
概括
此摘要是机器生成的。

原子力显微镜 (AFM) 数据现在可以转换为3D密度文件,使其与其他结构生物学技术相集成. 这一进步允许在冷电磁,X射线结晶学和NMR的同时进行可视化和分析,从而提高了蛋白质结构的确定性.

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相关实验视频

Last Updated: May 27, 2025

Measuring the Mechanical Properties of Living Cells Using Atomic Force Microscopy
08:41

Measuring the Mechanical Properties of Living Cells Using Atomic Force Microscopy

Published on: June 27, 2013

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Atomic Force Microscopy Imaging and Force Spectroscopy of Supported Lipid Bilayers
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Atomic Force Microscopy Imaging and Force Spectroscopy of Supported Lipid Bilayers

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Visualization of Recombinant DNA and Protein Complexes Using Atomic Force Microscopy
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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:

  • 已建立的结构生物学方法,如冷EM,X射线结晶学和NMR提供了重要的蛋白质结构数据.
  • 历史上,原子力显微镜 (AFM) 缺乏与这些既有结构生物学技术的直接整合.
  • 局部化AFM (LAFM) 已经出现,从AFM数据提供高分辨率的结构洞察力.

研究的目的:

  • 开发一条管道,将AFM数据转换为与标准结构生物学可视化和分析工具兼容的格式.
  • 为了使AFM数据与已建立的结构生物学方法进行整合,以提高蛋白质结构的确定性.
  • 为AFM数据创建一个标准化的文件格式,以便与其他结构数据进行比较和交叉验证.

主要方法:

  • 开发一个计算管道,将AFM数据转换为3D密度文件 (.afm).
  • 使用3D-LAFM密度作为分子动力学柔性拟合 (MDFF) 的力场.
  • 展示 .afm 文件格式对传统和 LAFM 图像的可视化和分析功能.

主要成果:

  • 成功地将AFM数据转换为.afm文件,可由常见的结构生物学软件读取.
  • 证明使用3D-LAFM密度来指导MDFF,产生以前未解决状态的结构模型.
  • afm格式允许对AFM图像进行直接的3D/2D可视化和分析,方便与其他结构数据进行比较.

结论:

  • 开发的管道和.afm文件格式弥合了AFM和传统结构生物学方法之间的差距.
  • 这种整合使得AFM可以在蛋白质结构研究中与冷EM,X射线晶体学和NMR一起经常使用.
  • 预计.afm格式将成为AFM数据存储的标准,促进结构生物学界的数据共享和交叉验证.