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Practical Model Selection for Prospective Virtual Screening
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DOI：10.1021/acs.jcim.8b00363.png)
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Abstract
En 中文
Virtual (computational) high-throughput screening provides a strategy for prioritizing compounds for experimental screens, but the choice of virtual screening algorithm depends on the data set and evaluation strategy. We consider a wide range of ligand-based machine learning and docking-based approaches for virtual screening on two protein-protein interactions, PriA-SSB and RMI-FANCM, and present a strategy for choosing which algorithm is best for prospective compound prioritization. Our workflow identifies a random forest as the best algorithm for these targets over more sophisticated neural network-based models. The top 250 predictions from our selected random forest recover 37 of the 54 active compounds from a library of 22,434 new molecules assayed on PriA-SSB. We show that virtual screening methods that perform well on public data sets and synthetic benchmarks, like multi-task neural networks, may not always translate to prospective screening performance on a specific assay of interest.
Keywords:
DRUG DISCOVERY
DNA-REPLICATION
DOCKING
PREDICTION
GENERATION
ACCURATE
ALGORITHM
METRICS
PAINS
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