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Focused grid-based resampling for protein docking and mapping.

Artem B Mamonov1, Mohammad Moghadasi2, Hanieh Mirzaei2

  • 1Department of Biomedical Engineering, Boston University, Boston, Massachusetts, 02215.

Journal of Computational Chemistry
|February 3, 2016
PubMed
Summary
This summary is machine-generated.

Focused resampling of the fast Fourier transform (FFT) algorithm enhances protein-protein docking and mapping. This local approach refines near-native structures and identifies additional ligand binding sites, improving drug discovery potential.

Keywords:
binding hot spotsfast Fourier transformprotein mappingprotein-protein dockingsystematic sampling

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Area of Science:

  • Computational Biology
  • Structural Biology
  • Drug Discovery

Background:

  • The fast Fourier transform (FFT) sampling algorithm is established for protein-protein docking and mapping.
  • Current applications often utilize FFT for global searches to identify potential binding sites.

Purpose of the Study:

  • To investigate the efficacy of local, focused resampling using the FFT approach in docking and protein mapping.
  • To determine if focused resampling can improve the accuracy of docked conformations and identify novel binding regions.

Main Methods:

  • Application of the FFT sampling algorithm for initial global docking searches.
  • Focused resampling of identified near-native clusters or hot spot regions.
  • Analysis of conformational accuracy and ligand-binding overlap.

Main Results:

  • Focused resampling significantly increases the number of conformations close to the native structure after an initial global FFT search.
  • In protein mapping, focused resampling of primary hot spots reveals additional, weaker binding regions.
  • Improved overlap between identified hot spots and bound ligands demonstrates the utility of this focused approach.

Conclusions:

  • Local, focused resampling with the FFT algorithm is a powerful refinement strategy for protein-protein docking.
  • This method enhances the identification of ligand binding sites in protein mapping, potentially uncovering new therapeutic targets.
  • Focused FFT resampling offers a more detailed understanding of molecular interactions and binding affinities.