Figure 4
From: X-ray structure analysis of bacteriorhodopsin at 1.3 Å resolution
Hydrogen bonding pattern in the proton path. (a) Hydrogen bonding network between SB and Arg82. The 2Fobs − Fcalc electron density map is shown at contour levels of 3σ (gray) and 5σ (dark gray). (b) Hydrogen bonding geometry around Tyr185 and Asp212. (c) The Fobs − Fcalc omit map of water molecules in the proton path is shown at contour levels of 3σ (gray) and 5σ (magenta).
