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Incorporating Target Protein Structure Flexibility and Dynamics in Computational Drug Discovery Using Ensemble-Based Docking Analysis

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Using restraints in EROS-DOCK improves model quality in pairwise and multicomponent protein docking.

Maria Elisa Ruiz Echartea1, David W Ritchie1, Isaure Chauvot de Beauchêne1

  • 1Universite de Lorraine, CNRS, Inria, LORIA, Nancy, France.

Proteins
|June 8, 2020
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Summary
This summary is machine-generated.

EROS-DOCK, a protein docking algorithm, now predicts dimeric and trimeric protein complex structures. Incorporating residue-residue restraints significantly improves the accuracy of predicting near-native binding orientations.

Keywords:
CAPRIdistance restraintsmulti-body dockingprotein docking

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Area of Science:

  • Computational biology
  • Structural biology
  • Bioinformatics

Background:

  • Protein docking algorithms predict 3D protein complex structures from individual components.
  • Traditional methods focused on dimeric complexes, but multicomponent complexes present greater challenges.
  • Protein conformational changes upon binding can lead to steric clashes, hindering accurate docking predictions.

Purpose of the Study:

  • To enhance the EROS-DOCK algorithm for predicting dimeric and trimeric protein complex structures.
  • To enable the use of user-defined restraints to improve docking accuracy.
  • To address the challenge of steric clashes in protein complex formation.

Main Methods:

  • Updated EROS-DOCK algorithm to handle dimeric and trimeric complexes.
  • Implemented user-defined residue-residue or atom-atom interaction restraints.
  • Evaluated algorithm performance on pairwise and trimeric docking cases.

Main Results:

  • Using a single residue-residue restraint per interface improved acceptable solutions in the top 10 from 51 to 121 out of 173 pairwise cases.
  • Successfully docked 8 out of 11 trimeric complexes.
  • Demonstrated the efficacy of restraints in overcoming steric clash issues.

Conclusions:

  • The enhanced EROS-DOCK algorithm effectively predicts structures of dimeric and trimeric protein complexes.
  • User-defined restraints are crucial for improving docking accuracy and overcoming steric clashes.
  • This advancement facilitates the study of complex protein interactions.