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Related Concept Videos

Determination of Crystal Structures01:29

Determination of Crystal Structures

In the late 1800s, the revelation that light extended beyond visible wavelengths led to the discovery of X-rays by Wilhelm Roentgen. Recognized as high-energy electromagnetic radiation with short wavelengths, X-rays prompted exploration into their interaction with crystals. Max von Laue proposed in 1912 that the periodic arrangement of atoms, ions, or molecules in crystals would cause them to diffract X-rays, a hypothesis confirmed through experiments with copper sulfate and zinc sulfide...
X-ray Crystallography02:18

X-ray Crystallography

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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On-Chip Crystallization and Large-Scale Serial Diffraction at Room Temperature
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On-Chip Crystallization and Large-Scale Serial Diffraction at Room Temperature

Published on: March 11, 2022

Image processing and lattice determination for three-dimensional nanocrystals.

Linhua Jiang1, Dilyana Georgieva, Igor Nederlof

  • 1Gorlaeus Laboratory, Faculty of Science, Leiden University, Einsteinweg 55, 2333 CC Leiden, The Netherlands. l.jiang@science.leidenuniv.nl

Microscopy and Microanalysis : the Official Journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada
|November 19, 2011
PubMed
Summary
This summary is machine-generated.

New software, AMP, analyzes non-oriented electron diffraction patterns from 3D nanocrystals. This advances structural determination for radiation-sensitive materials like proteins, overcoming limitations of traditional methods.

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Area of Science:

  • Materials Science
  • Biophysics
  • Crystallography

Background:

  • Transmission cryo-electron microscopy enables electron diffraction studies of 3D nanocrystals.
  • Traditional single-crystal X-ray crystallography is unsuitable for nanosized protein crystals.
  • Existing electron diffraction software requires radiation-hard materials and well-oriented samples.

Purpose of the Study:

  • To address the challenge of analyzing non-oriented diffraction patterns from radiation-sensitive 3D nanocrystals.
  • To introduce new software, AMP, for processing electron diffraction data from delicate samples.
  • To present progress on a preprocessing program utilizing autocorrelation for lattice determination.

Main Methods:

  • Development of the AMP software for handling non-oriented diffraction patterns.
  • Utilizing autocorrelation patterns of diffraction images for lattice determination.
  • Application of transmission cryo-electron microscopy for nanocrystal analysis.

Main Results:

  • The AMP software is capable of processing non-oriented electron diffraction data.
  • A new preprocessing program shows promise for lattice determination and indexing of 3D nanocrystals.
  • Overcoming limitations of existing methods for radiation-sensitive crystalline samples.

Conclusions:

  • The developed software and methods facilitate the structural study of 3D nanocrystals, particularly radiation-sensitive biological molecules.
  • Advances in data processing open new avenues for molecular structure determination using electron diffraction.
  • The research addresses a critical gap in analyzing challenging crystalline samples in electron microscopy.