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Ligand-protein cross-docking with water molecules.
Ramasamy Thilagavathi1, Ricardo L Mancera
1Curtin Health Innovation Research Institute, Western Australian Biomedical Research Institute, School of Pharmacy and Biomedical Sciences, Curtin University of Technology, Perth, WA 6845, Australia.
Journal of Chemical Information and Modeling
|February 18, 2010
Summary
Including water molecules in ligand-protein docking simulations significantly improves accuracy. This study demonstrates the importance of considering these molecules for more reliable results in drug discovery.
Area of Science:
- Computational chemistry
- Structural biology
- Pharmacology
Background:
- Ligand-protein docking is crucial for drug discovery.
- Protein surface water molecules can influence docking accuracy.
- Previous studies have not consistently addressed the role of water in docking.
Purpose of the Study:
- To investigate the impact of protein-bound water molecules on the accuracy of ligand-protein docking.
- To determine if including conserved water molecules enhances cross-docking simulation performance.
Main Methods:
- Performed cross-docking simulations on multiple ligand-protein complexes.
- Focused on proteins with water molecules in their binding sites.
- Considered only common sets of water molecules across simulations.
Main Results:
- A statistically significant increase in docking accuracy was observed when water molecules were included.
- The presence of conserved water molecules demonstrably improved simulation outcomes.
- Cross-docking accuracy showed a positive correlation with water molecule inclusion.
Conclusions:
- Water molecules play a critical role in ligand-protein interactions and docking accuracy.
- Including conserved water molecules in docking simulations is recommended for improved reliability.
- This finding has significant implications for structure-based drug design and virtual screening.
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