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. 2020 Mar 6;25(5):1198. doi: 10.3390/molecules25051198

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© 2020 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Sideview (A) and rearview (B) of the channel going through the active-site gorge in the DmAChE/ZAI complex. The residues at the gate of the channel opening, near the bottom of the gorge, are represented as sticks (Trp83/Trp472/Asp82). The solvent-accessible surface is represented by a mesh. Comparison of the channel opening region of DmAChE (C), and the homologous regions in human AChE (D) and human BChE (E). Residues of interest are represented as sticks, and important H-bonds as black dashes.