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Related Experiment Videos

Protein crystal structure analysis from high-resolution X-ray powder-diffraction data.

Robert B Von Dreele1

  • 1Los Alamos National Laboratory, Lujan Center, Los Alamos, New Mexico 87545, USA.

Methods in Enzymology
|December 17, 2003
PubMed
Summary

High-resolution powder diffraction can soon examine large protein structures over 100 kDa. Advances in imaging and X-ray optics will enable laboratory X-ray sources to screen and determine protein/drug complex structures.

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Area of Science:

  • Structural Biology
  • Biophysics
  • Crystallography

Background:

  • High-resolution powder diffraction is an emerging technique for protein structure determination.
  • Current methods have limitations in speed and the size of proteins that can be analyzed.

Purpose of the Study:

  • To explore the future potential of high-resolution powder diffraction for analyzing large protein structures.
  • To identify technological advancements that can overcome current limitations.

Main Methods:

  • Discussion of current data-collection technology in powder diffraction.
  • Proposal of utilizing high-resolution imaging and X-ray focusing optics.

Main Results:

  • Anticipated 1000-fold or greater improvement in data collection speed and efficiency.

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  • Enabling the use of laboratory X-ray sources for advanced structural analysis.

    • Conclusions:

    • Future developments will allow examination of protein structures exceeding 100 kDa.
    • The enhanced method will facilitate screening for protein/drug complex formation and structure determination.