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Lookup NU author(s): Dr Natalie TatumORCiD
This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).
Transcriptional repressor EthR from Mycobacterium tuberculosis is a valuable target for antibiotic booster drugs. We previously reported a virtual screening campaign to identify EthR inhibitors for development. Two ligand binding orientations were often proposed, though only the top scoring pose was utilized for filtering of the large data set. We obtained biophysically validated hits, some of which yielded complex crystal structures. In some cases, the crystallized binding mode and top scoring mode agree, while for others an alternate ligand binding orientation was found. In this contribution, we combine rigid docking, molecular dynamics simulations, and the linear interaction energy method to calculate binding free energies and derive relative binding energies for a number of EthR inhibitors in both modes. This strategy allowed us to correctly predict the most favorable orientation. Therefore, this widely applicable approach will be suitable to triage multiple binding modes within EthR and other potential drug targets with similar characteristics.https://doi.org/10.1021/acs.jpclett.9b00741
Author(s): Tatum NJ, Duarte F, Kamerlin SCL, Pohl E
Publication type: Article
Publication status: Published
Journal: Journal of Physical Chemistry Letters
Year: 2019
Volume: 10
Issue: 9
Pages: 2244-2249
Print publication date: 02/05/2019
Online publication date: 09/04/2019
Acceptance date: 09/04/2019
Date deposited: 22/07/2019
ISSN (electronic): 1948-7185
Publisher: American Chemical Society
URL: https://doi.org/10.1021/acs.jpclett.9b00741
DOI: 10.1021/acs.jpclett.9b00741
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