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Figure 3.
Fig. 3. Differences between RHO and LUMI. (A–C)
Projection views of the three regions containing the difference
electron densities between RHO and LUMI. Each image is a
10-Å slab section from the extracellular (A) to
cytoplasmic (C) side of the transmembrane helical domain.
Positive (blue) and negative (red) electron densities contoured
to 3.5  level are shown on the
 -carbon traces of the
seven helices. (D) Superposition of the crystallographic models
of RHO (green) and LUMI (orange). Only the -carbon traces and the
retinal chromophore are shown.
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