Impact of Different Automated Binding Pose Generation Approaches on Relative Binding Free Energy Simulations

被引:25
作者
Cappel, Daniel [1 ]
Jerome, Steven [3 ]
Hessler, Gerhard [2 ]
Matter, Hans [2 ]
机构
[1] Schrodinger GmbH, D-68161 Mannheim, Germany
[2] Sanofi Aventis Deutschland GmbH, Integrated Drug Discovery IDD, Synthet Mol Design, D-65926 Frankfurt, Germany
[3] Schrodinger Inc, New York, NY 10036 USA
关键词
REPLICA-EXCHANGE; DRUG DISCOVERY; 2-CARBOXYINDOLE SCAFFOLD; SELECTIVE INHIBITORS; ACCURATE DOCKING; PROTEIN; POTENT; OPTIMIZATION; MODEL; GLIDE;
D O I
10.1021/acs.jcim.9b01118
中图分类号
R914 [药物化学];
学科分类号
100701 ;
摘要
Relative binding free energy (RBFE) prediction methods such as free energy perturbation (FEP) are important today for estimating protein-ligand binding affinities. Significant hardware and algorithmic improvements now allow for simulating congeneric series within days. Therefore, RBFE calculations have an enormous potential for structure-based drug discovery. As typically only a few representative crystal structures for a series are available, other ligands and design proposals must be reliably superimposed for meaningful results. An observed significant effect of the alignment on FEP led us to develop an alignment approach combining docking with maximum common substructure (MCS) derived core constraints from the most similar reference pose, named MCS-docking workflow. We then studied the effect of binding pose generation on the accuracy of RBFE predictions using six ligand series from five pharmaceutically relevant protein targets. Overall, the MCS-docking workflow generated consistent poses for most of the ligands in the investigated series. While multiple alignment methods often resulted in comparable FEP predictions, for most of the cases herein, the MCS-docking workflow produced the best accuracy in predictions. Furthermore, the FEP analysis data strongly support the hypothesis that the accuracy of RBFE predictions depends on input poses to construct the perturbation map. Therefore, an automated workflow without manual intervention minimizes potential errors and obtains the most useful predictions with significant impact for structure-based design.
引用
收藏
页码:1432 / 1444
页数:13
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