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Molecules 2015, 20(9), 15842-15861; doi:10.3390/molecules200915842

p38α MAPK and Type I Inhibitors: Binding Site Analysis and Use of Target Ensembles in Virtual Screening

Department of Pharmaceutical Sciences, University of Perugia, Via A. Fabretti, 48, 06123 Perugia, Italy
These authors contributed equally to this work.
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Academic Editor: Alessandro Pedretti
Received: 26 March 2015 / Revised: 19 August 2015 / Accepted: 26 August 2015 / Published: 31 August 2015
(This article belongs to the Section Medicinal Chemistry)
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Abstract

Mitogen-activated protein kinase p38α plays an essential role in the regulation of pro-inflammatory signaling, and selective blockade of this kinase could be efficacious in many pathological processes. Despite considerable research efforts focused on the discovery and development of p38α MAPK inhibitors, no drug targeting this protein has been approved for clinical use so far. We herein analyze the available crystal structures of p38α MAPK in complex with ATP competitive type I inhibitors, getting insights into ATP binding site conformation and its influence on automated molecular docking results. The use of target ensembles, rather than single conformations, resulted in a performance improvement in both the ability to reproduce experimental bound conformations and the capability of mining active molecules from compound libraries. The information gathered from this study can be exploited in structure-based drug discovery programs having as the ultimate aim the identification of novel p38α MAPK type I inhibitors. View Full-Text
Keywords: p38α MAPK; docking; virtual screening; type I inhibitors p38α MAPK; docking; virtual screening; type I inhibitors
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Astolfi, A.; Iraci, N.; Sabatini, S.; Barreca, M.L.; Cecchetti, V. p38α MAPK and Type I Inhibitors: Binding Site Analysis and Use of Target Ensembles in Virtual Screening. Molecules 2015, 20, 15842-15861.

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