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Related Experiment Videos

The morph server: a standardized system for analyzing and visualizing macromolecular motions in a database framework.

W G Krebs1, M Gerstein

  • 1Department of Molecular Biophysics and Biochemistry, Yale University, PO Box 208114, New Haven, CT 06520, USA.

Nucleic Acids Research
|March 29, 2000
PubMed
Summary

A new system standardizes descriptions of protein conformational variability and macromolecular motions. This aids in classifying protein movements and visualizing them through

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Area of Science:

  • Structural Biology
  • Computational Biology
  • Biophysics

Background:

  • Increasing number of solved macromolecular structures with similar folds but varying conformations.
  • Need for standardized terminology and automated systems to process diverse protein structures.

Purpose of the Study:

  • To develop a standardized system for describing and analyzing macromolecular motions.
  • To create a web-based server for processing protein conformational variability.

Main Methods:

  • Developed a 'front-end' server processing protein structures in different conformations.
  • Modeled protein motion as rigid-body rotation around hinges in a standardized coordinate system.
  • Performed adiabatic mapping to generate 'morph movies' and estimate energy barriers.

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Main Results:

  • The system accommodates most, but not all, protein motions, aiding in classification.
  • Generated 'morph movies' for visualization of conformational changes.
  • Analysis of submitted motions shows median rotation of ~10 degrees and Calpha displacement of 17 Å.

Conclusions:

  • The developed system provides a standardized approach to analyzing macromolecular motions.
  • The system aids in classifying protein movements and visualizing conformational changes.
  • Web accessibility facilitates broad use and data collection for statistical analysis of protein dynamics.