6b7d
From Proteopedia
Crystal structure of E.coli Phosphopantetheine Adenylyltransferase (PPAT/CoaD) in complex with 3-(4-chlorophenyl)-6-methoxy-4,5-dimethylpyridazine
Structural highlights
FunctionCOAD_ECOLI Reversibly transfers an adenylyl group from ATP to 4'-phosphopantetheine, yielding dephospho-CoA (dPCoA) and pyrophosphate. Publication Abstract from PubMedStructure-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 in the bound state. For the first time, the utility and performance of such a method is fully demonstrated by employing the generated models for the successful, prospective optimization of crystallographically intractable fragment hits into more potent binders. High-Confidence Protein-Ligand Complex Modeling by NMR-Guided Docking Enables Early Hit Optimization.,Proudfoot A, Bussiere DE, Lingel A J Am Chem Soc. 2017 Dec 13;139(49):17824-17833. doi: 10.1021/jacs.7b07171. Epub, 2017 Nov 30. PMID:29190085[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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