J Chem Inf Model - Docking ligands into flexible and solvated macromolecules. 7. Impact of protein flexibility and water molecules on docking-based virtual screening accuracy.

Tópicos

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Resumo

The use of predictive computational methods in the drug discovery process is in a state of continual growth. Over the last two decades, an increasingly large number of docking tools have been developed to identify hits or optimize lead molecules through in-silico screening of chemical libraries to proteins. In recent years, the focus has been on implementing protein flexibility and water molecules. Our efforts led to the development of Fitted first reported in 2007 and further developed since then. In this study, we wished to evaluate the impact of protein flexibility and occurrence of water molecules on the accuracy of the Fitted docking program to discriminate active compounds from inactive compounds in virtual screening (VS) campaigns. For this purpose, a total of 171 proteins cocrystallized with small molecules representing 40 unique enzymes and receptors as well as sets of known ligands and decoys were selected from the Protein Data Bank (PDB) and the Directory of Useful Decoys (DUD), respectively. This study revealed that implementing displaceable crystallographic or computationally placed particle water molecules and protein flexibility can improve the enrichment in active compounds. In addition, an informed decision based on library diversity or research objectives (hit discovery vs lead optimization) on which implementation to use may lead to significant improvements.

Resumo Limpo

use predict comput method drug discoveri process state continu growth last two decad increas larg number dock tool develop identifi hit optim lead molecul insilico screen chemic librari protein recent year focus implement protein flexibl water molecul effort led develop fit first report develop sinc studi wish evalu impact protein flexibl occurr water molecul accuraci fit dock program discrimin activ compound inact compound virtual screen vs campaign purpos total protein cocrystal small molecul repres uniqu enzym receptor well set known ligand decoy select protein data bank pdb directori use decoy dud respect studi reveal implement displac crystallograph comput place particl water molecul protein flexibl can improv enrich activ compound addit inform decis base librari divers research object hit discoveri vs lead optim implement use may lead signific improv

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