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• W3048163099 startingPage "4730" @default.
• W3048163099 abstract "The efflux transporter P-glycoprotein (P-gp) is responsible for the extrusion of a wide variety of molecules, including drug molecules, from the cell. Therefore, P-gp-mediated efflux transport limits the bioavailability of drugs. To identify potential P-gp substrates early in the drug discovery process, in silico models have been developed based on structural and physicochemical descriptors. In this study, we investigate the use of molecular dynamics fingerprints (MDFPs) as an orthogonal descriptor for the training of machine learning (ML) models to classify small molecules into substrates and nonsubstrates of P-gp. MDFPs encode the information from short MD simulations of the molecules in different environments (water, membrane, or protein pocket). The performance of the MDFPs, evaluated on both an in-house dataset (3930 compounds) and a public dataset from ChEMBL (1114 compounds), is compared to that of commonly used 2D molecular descriptors, including structure-based and property-based descriptors. We find that all tested classifiers interpolate well, achieving high accuracy on chemically diverse subsets. However, by challenging the models with external validation and prospective analysis, we show that only tree-based ML models trained on MDFPs or property-based descriptors generalize well to regions of the chemical space not covered by the training set." @default.
• W3048163099 created "2020-08-13" @default.
• W3048163099 creator A5002395814 @default.
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• W3048163099 creator A5082747737 @default.
• W3048163099 date "2020-08-07" @default.
• W3048163099 modified "2023-10-13" @default.
• W3048163099 title "Combining Machine Learning and Molecular Dynamics to Predict P-Glycoprotein Substrates" @default.
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