Exploring Ligand Stability in Protein Crystal Structures using Binding Pose Metadynamics.

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ID: 78879
2020
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Abstract
Identification of correct protein-ligand binding poses is important in structure-based drug design and crucial for the evaluation of protein-ligand binding affinity. Protein-ligand coordinates are commonly obtained from crystallography experiments that provide a static model of an ensemble of conformations. Binding Pose Metadynamics (BPMD) is an enhanced-sampling method that allows an efficient assessment of ligand stability in solution. Ligand poses that are unstable under the bias of the metadynamics simulation are expected to be infrequently occupied in the energy landscape, thus making minimal contributions to the binding affinity. Here, the robustness of the method is studied using crystal structures with ligands known to be incorrectly modelled as well as 63 structurally diverse crystal structures with ligand fit to electron density from the Twilight database. Results show that BPMD can successfully discriminate compounds whose binding pose is not supported by the electron density from those with well-defined electron density.
Reference Key
fusani2020exploringjournal Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Fusani, Lucia;Palmer, David S;Somers, Don O;Wall, Ian;
Journal Journal of chemical information and modeling
Year 2020
DOI
10.1021/acs.jcim.9b00843
URL
Keywords Keywords not found

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