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. Author manuscript; available in PMC: 2019 Sep 30.
Published in final edited form as: J Am Chem Soc. 2019 Jul 12;141(29):11667–11676. doi: 10.1021/jacs.9b05136

Figure 8.

Figure 8.

Density of CEC positions in the xy-plane for bin centered at CECZ’ = −1.6 Å. Blue dashed circles represent the average radius of the channel at Z’ = −1.6 Å for this proton position, centered at the average center of the channel at Z’ = −1.6 Å based on the center of mass of backbone atoms. Relevant nearby atoms shown in green, with size indicating proximity (larger atoms are closer to this plane). Atoms are labeled by residue and chain. See movie 1 in SI for equivalent slices moving through the channel.