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Figure 4.
Fig. 4. Crystallographic models of the three states of RHO.
(A) Projection view around the retinal with some amino acid
residues. Shown are the three models: RHO (green), BATHO (red),
and LUMI (orange). (B) Structural changes between RHO (green)
and LUMI (orange) around the middle of helix III. The four bound
water molecules in this site are shown as small light blue
spheres, which are fixed in the positions found in the
ground-state structure.
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