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. Author manuscript; available in PMC: 2016 Nov 15.
Published in final edited form as: Bioorg Med Chem Lett. 2015 Oct 9;25(22):5102–5106. doi: 10.1016/j.bmcl.2015.10.012

Figure 3.

Figure 3

Superimposed binding poses for compounds 8i (C atoms in green), 8j (C atoms in yellow) and 8k (C atoms in brown). The key H-bonding interaction between the ligand quaternary N and Asp155 is depicted by the dashed line.