Related Experiment Videos
Molecular docking to ensembles of protein structures
R M Knegtel1, I D Kuntz, C M Oshiro
1Department of Pharmaceutical Chemistry, School of Pharmacy, University of California, San Francisco 94143-0446, USA.
Journal of Molecular Biology
|February 21, 1997
Summary
Molecular docking now accounts for receptor flexibility using novel methods. These approaches average interaction energies or scores across multiple structures, improving accuracy for drug discovery and computational speed.
Area of Science:
- Computational chemistry
- Structural biology
- Drug discovery
Background:
- Traditional molecular docking models rigid macromolecular receptors.
- Experimental data reveal significant conformational changes in receptors upon ligand binding.
Purpose of the Study:
- To develop and validate molecular docking methods that incorporate receptor conformational variability.
- To improve the accuracy and efficiency of molecular docking for drug discovery.
Main Methods:
- Developed two novel molecular docking methods: energy-weighted averaging and geometry-weighted averaging.
- Utilized ensembles of experimental receptor structures (crystal and solution).
- Applied methods to dock small molecules to target biomolecules.
Main Results:
- Accurate reproduction of experimentally determined binding orientations and energies for known ligands.
- Demonstrated improved computational speed for database searches using composite grids with multiple structures.
Conclusions:
- Incorporating conformational variability from receptor ensembles enhances molecular docking accuracy.
- These methods offer a more realistic approach to virtual screening and drug design.
- Composite grids accelerate database searches when multiple receptor conformations are available.