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Strain tensor field in proteins

T Yamato1

  • 1Faculty of Technology, Tokyo University of Agriculture and Technology, Japan.

Journal of Molecular Graphics
|April 1, 1996
PubMed
Summary

This study visualizes protein molecule pressure strain using computational geometry. The method reveals complex, inhomogeneous deformations in lysozyme and myoglobin, applicable to various moderate deformations.

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Area of Science:

  • Computational biology
  • Structural bioinformatics
  • Molecular modeling

Background:

  • Understanding protein molecule deformation under pressure is crucial for molecular dynamics and drug design.
  • Existing methods may not fully capture the intricate, localized changes within protein structures.

Purpose of the Study:

  • To develop and apply a novel computational method for visualizing and analyzing pressure-induced strain tensor fields in proteins.
  • To investigate the deformation patterns of specific proteins like lysozyme and myoglobin under pressure.

Main Methods:

  • Utilized computer graphics and computational geometry to visualize tensor fields of pressure strain.
  • Modeled protein molecules as a collection of Delaunay tetrahedra, representing microscopic continuous bodies.
  • Analyzed the strain tensor to describe the deformation of each tetrahedron.

Main Results:

  • Visualizations revealed complex and inhomogeneous pressure-induced deformations in lysozyme and myoglobin.
  • Observed simultaneous local expansions and contractions within the protein structures.
  • Demonstrated the method's capability to analyze various types of moderate deformations beyond pressure.

Conclusions:

  • The developed computational approach effectively visualizes and quantifies protein deformations.
  • Protein deformation under pressure is highly localized and complex.
  • This method offers a versatile tool for analyzing diverse protein structural changes.

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