High-Confidence Protein–Ligand Complex Modeling by NMR-Guided Docking Enables Early Hit Optimization
2017
Structure-based drug design is an integral part of modern day drug discovery and requires detailed structural characterization of protein–ligand interactions, which is most commonly performed by X-ray crystallography. However, the success rate of generating these costructures is often variable, in particular when working with dynamic proteins or weakly binding ligands. As a result, structural information is not routinely obtained in these scenarios, and ligand optimization is challenging or not pursued at all, representing a substantial limitation in chemical scaffolds and diversity. To overcome this impediment, we have developed a robust NMR restraint guided docking protocol to generate high-quality models of protein–ligand complexes. By combining the use of highly methyl-labeled protein with experimentally determined intermolecular distances, a comprehensive set of protein–ligand distances is generated which then drives the docking process and enables the determination of the correct ligand conformation...
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