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. 2007 Dec 5;104(50):19831–19836. doi: 10.1073/pnas.0709978104

Fig. 3.

Fig. 3.

Cross-sections of the transmembrane region of Ca2+-ATPase. van der Waals surfaces of E1·AlF4−·ADP (a) and E2·BeF3−(−TG) (b). Red colors represent acidic residues. Dotted circles in b indicate the positions of Ca2+ observed in E1·AlF4−·ADP (a). The images shown were prepared with PyMol (34).