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相关概念视频

Atomic Force Microscopy01:08

Atomic Force Microscopy

3.8K
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...
3.8K

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相关实验视频

Updated: Nov 2, 2025

Atomic Force Microscopy of Red-Light Photoreceptors Using PeakForce Quantitative Nanomechanical Property Mapping
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Atomic Force Microscopy of Red-Light Photoreceptors Using PeakForce Quantitative Nanomechanical Property Mapping

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定位原子力显微镜

George R Heath1,2, Ekaterina Kots3, Janice L Robertson4

  • 1Department of Anesthesiology, Weill Cornell Medicine, New York, NY, USA.

Nature
|June 17, 2021
PubMed
概括
此摘要是机器生成的。

定位原子力显微镜 (LAFM) 提高了单分子分析的分辨率. 这种新技术可以在原生条件下对蛋白质的单个氨基酸残留进行可视化,从而推进结构动力学研究.

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Sub-nanometer Resolution Imaging with Amplitude-modulation Atomic Force Microscopy in Liquid
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Sub-nanometer Resolution Imaging with Amplitude-modulation Atomic Force Microscopy in Liquid

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相关实验视频

Last Updated: Nov 2, 2025

Atomic Force Microscopy of Red-Light Photoreceptors Using PeakForce Quantitative Nanomechanical Property Mapping
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Sub-nanometer Resolution Imaging with Amplitude-modulation Atomic Force Microscopy in Liquid
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科学领域:

  • 生物物理
  • 结构生物学
  • 生物化学

背景情况:

  • 了解单个分子层面的生物分子结构动力学对于阐明分子机制至关重要.
  • 现有的技术往往缺乏详细分析所需的分辨率或生理相关性.
  • 原子力显微镜 (AFM) 具有优势,但在评估细形状细节时,其分辨率受到限制.

研究的目的:

  • 克服当前原子力显微镜 (AFM) 技术的分辨率限制.
  • 开发一种在软蛋白表面溶解单个氨基酸残留的方法.
  • 在本地和动态条件下实现高分辨率单分子结构分析.

主要方法:

  • 发展定位原子力显微镜 (LAFM).
  • 将本地化图像重建算法应用于AFM数据 (高速和常规).
  • 在AFM图像中分析峰值位置以提高超出尖端半径限制的分辨率.

主要成果:

  • 达到了超过AFM尖端半径所规定的分辨率.
  • 在软蛋白表面上成功溶解单个氨基酸残留物.
  • 从多个分子或单个分子的时间序列数据生成高分辨率地图.

结论:

  • 通过LAFM显著提高AFM的分辨率,使生物分子的详细结构分析成为可能.
  • 该技术允许在生理上相关的条件下在单个氨基酸水平上可视化分子结构.
  • LAFM是一种适用于现有的空中飞行数据集的多功能后获取图像重建方法.