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Related Experiment Video

Updated: Jul 10, 2026

Incorporating Target Protein Structure Flexibility and Dynamics in Computational Drug Discovery Using Ensemble-Based Docking Analysis
08:49

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

Published on: June 20, 2025

A flexible approach to induced fit docking.

Sander B Nabuurs1, Markus Wagener, Jacob de Vlieg

  • 1Center for Molecular and Biomolecular Informatics, Radboud University, Nijmegen, The Netherlands. sander@nabuurs.org

Journal of Medicinal Chemistry
|November 23, 2007
PubMed
Summary

Fleksy enhances molecular docking by accounting for both ligand and receptor flexibility using a receptor ensemble. This novel approach significantly improves the accuracy of predicting binding modes compared to rigid receptor methods.

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Area of Science:

  • Computational chemistry
  • Structural biology
  • Drug discovery

Background:

  • Protein flexibility is crucial for accurate molecular docking.
  • Existing docking methods often treat receptors as rigid, limiting their predictive power.
  • Accounting for receptor flexibility is essential for understanding ligand-receptor interactions.

Purpose of the Study:

  • To introduce Fleksy, a novel computational approach for molecular docking.
  • To incorporate both ligand and receptor flexibility into the docking process.
  • To improve the accuracy of predicting binding modes in drug discovery.

Main Methods:

  • Utilized a receptor ensemble to model protein flexibility.
  • Employed interaction sampling to evaluate orientations of interaction partners.
  • Integrated ensemble-based soft-docking (FlexX-Ensemble) and flexible complex optimization (Yasara).
  • Developed a consensus scoring function combining docking scores and force field energies.

Main Results:

  • Fleksy achieved a 78% success rate in reproducing observed binding modes within 2.0 Å across 35 complexes.
  • Demonstrated a significant improvement over the rigid receptor FlexX program (44% success rate).
  • The method effectively handles ligand and receptor flexibility in docking simulations.

Conclusions:

  • Fleksy offers a more accurate and reliable method for molecular docking by considering flexibility.
  • The receptor ensemble approach is effective in capturing protein conformational changes.
  • Fleksy has the potential to advance drug discovery by improving the prediction of ligand-receptor interactions.