Figure 7.
Fig. 7. Superimposition of the C^ -traces of E2(TG+BHQ)
(green) and E1·2Ca^2+ (violet) around the Ca^2+-binding
sites, viewed in stereo. Water molecules are represented by
small spheres in red (E2(TG+BHQ); 1-6) and violet
(E1·2Ca^2+; a-e). Ca^2+ in E1·2Ca^2+ appear as
cyan spheres (marked I and II). Side chains [atom color for
E2(TG+BHQ) and violet for E1·2Ca^2+] are shown for some
of the residues that may be involved in moving water or binding
Ca^2+. Arrows shows the movements of the transmembrane helices
in the transition E1·2Ca^2+ E2(TG+BHQ). Orange
broken lines represent hydrogen bonds, and cyan lines show
Ca^2+-coordination.
-traces of E2(TG+BHQ)
(green) and E1·2Ca^2+ (violet) around the Ca^2+-binding
sites, viewed in stereo. Water molecules are represented by
small spheres in red (E2(TG+BHQ); 1-6) and violet
(E1·2Ca^2+; a-e). Ca^2+ in E1·2Ca^2+ appear as
cyan spheres (marked I and II). Side chains [atom color for
E2(TG+BHQ) and violet for E1·2Ca^2+] are shown for some
of the residues that may be involved in moving water or binding
Ca^2+. Arrows shows the movements of the transmembrane helices
in the transition E1·2Ca^2+ 
E2(TG+BHQ). Orange
broken lines represent hydrogen bonds, and cyan lines show
Ca^2+-coordination.