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. 2013 Apr;141(4):445–465. doi: 10.1085/jgp.201210856

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© 2013 Kulleperuma et al.

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Figure 9. — Effect of the charge distribution of the channel on the energetics of ion translocation. (A) Representative snapshot of the water-filled open conformation of H_V1. Water molecules and charged residues in the pore are shown in licorice representation; the extracellular end is to the right. (B) Static field energy for the transfer of a positive point charge in (blue) WT and (red) neutral-D112 forms of H_V1. Two thick lines represent the mean of five running averages, each computed from a dataset of 30 snapshots using a five-point moving window. Blue shading and orange error bars represent the SEM.