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Related Experiment Videos

Dynamic contact maps of protein structures

E L Sonnhammer1, J C Wootton

  • 1Computational Biology Branch, National Library of Medicine, National Institutes of Health, Bethesda, Maryland 20894, USA.

Journal of Molecular Graphics & Modelling
|October 23, 1998
PubMed
Summary

We developed two software tools, Structer and Dotter, to enhance protein structure analysis using 2D contact maps. These tools allow interactive visualization of interresidue distances, improving the study of protein structures.

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Area of Science:

  • Structural biology
  • Bioinformatics
  • Computational chemistry

Background:

  • Two-dimensional contact maps are vital for visualizing protein structures.
  • Existing methods often rely on fixed distance cutoffs, limiting interactive analysis.

Purpose of the Study:

  • To introduce two integrated software tools, Structer and Dotter, for enhanced protein structure analysis.
  • To enable dynamic exploration of interresidue distances in protein structures.

Main Methods:

  • Structer calculates protein contact maps from 3D structural data (PDB or MMDB API).
  • Dotter visualizes these maps, utilizing dynamic rendering for interactive distance cutoff exploration.
  • The workflow avoids predefined cutoffs, allowing single matrix calculation for multiple analyses.

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Main Results:

  • Structer supports various distance measures, multi-chain maps, and user-defined residue masking.
  • Combined use of Structer and Dotter offers versatile and interactive analysis of protein contact maps.
  • The dynamic rendering in Dotter facilitates efficient exploration of structural relationships.

Conclusions:

  • The Structer-Dotter combination provides a powerful and flexible platform for protein structure visualization and analysis.
  • This approach enhances the utility of 2D contact maps for researchers in structural biology and bioinformatics.