相关实验视频

Updated: Jul 23, 2025

A Robust Single-Particle Cryo-Electron Microscopy cryo-EM Processing Workflow with cryoSPARC, RELION, and Scipion

A Robust Single-Particle Cryo-Electron Microscopy cryo-EM Processing Workflow with cryoSPARC, RELION, and Scipion

Published on: January 31, 2022

在低分辨率下,使用小数据集对冷EM重建问题的强有力的初始解决方案

Aaditya V Rangan¹, Leslie Greengard¹

¹Center for Computational Mathematics, Flatiron Institute and Courant Institute, NYU, USA.

Journal of structural biology

|July 14, 2023

概括

这项研究引入了一种新的算法,用于*ab initio*重建单粒子冷电子显微镜 (cryo-EM). 该方法可以从小型数据集中快速生成低分辨率的模型,有助于实验期间实时评估粒子质量.

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:

单粒子冷电子显微镜 (cryo-EM) 对于确定宏分子的高分辨率结构至关重要.
化-电磁管道涉及粒子识别,低分辨率重建,精细化和原子模型装配.
目前的方法通常需要大量的数据集来进行可靠的重建.

研究的目的:

开发一种用于*ab initio*重建的新算法,用于冷EM.
从小粒子数据集 (数千个粒子) 实现低分辨率模型生成.
为数据采集过程中实时质量评估创建一个强大,自动和快速的重建方法.

主要方法:

专注于冷EM重建管道的第二阶段:从粒子图像生成低分辨率模型.
为*ab initio*重建而设计的新算法的开发.
算法旨在实现稳定性,自动化和速度,适合小型数据集.

主要成果:

拟议的算法可以从有限的冷EM数据进行*ab initio*的重建.
它可以高效地生成低分辨率的结构模型.
该方法被设计为快速和自动化,以便在显微镜实验中使用.

结论:

开发的算法为*ab initio*重建在冷-EM中提供了一种新的方法.
它解决了从小数据集生成模型的挑战.
通过实时评估来提高冷EM工作流程的效率和质量控制的潜力.

更多相关视频

Do's and Don'ts of Cryo-electron Microscopy: A Primer on Sample Preparation and High Quality Data Collection for Macromolecular 3D Reconstruction

Do's and Don'ts of Cryo-electron Microscopy: A Primer on Sample Preparation and High Quality Data Collection for Macromolecular 3D Reconstruction

Published on: January 9, 2015

Routine Collection of High-Resolution cryo-EM Datasets Using 200 KV Transmission Electron Microscope

Routine Collection of High-Resolution cryo-EM Datasets Using 200 KV Transmission Electron Microscope

Published on: March 16, 2022

相关概念视频

Cryo-electron Microscopy

Cryo-electron Microscopy

Conventional electron microscopy (EM) involves dehydration, fixation, and staining of biological samples, which distorts the native state of biological molecules and results in several artifacts. Also, the high-energy electron beam damages the sample and makes it difficult to obtain high-resolution images. These issues can be addressed using cryo-EM, which uses frozen samples and gentler electron beams. The technique was developed by Jacques Dubochet, Joachim Frank, and Richard Henderson, for...

Electron Microscope Tomography and Single-particle Reconstruction

Electron Microscope Tomography and Single-particle Reconstruction

Transmission electron microscopy (TEM) can be used to determine the 3D structure of biological samples with the help of techniques such as electron microscope tomography and single-particle reconstruction. While single-particle reconstruction can examine macromolecules and macromolecular complexes in vitro conditions only, tomography permits the study of cell components or small cells in vivo.
Electron Tomography
Electron tomography can be performed either in TEM or STEM (scanning transmission...