Fig.1. The crystal structure of the bovine F₁-ATPase (Gibbons et al., 2000) superimposed on an envelope of the hydrated E. coli F₁-ATPase (₃ß₃), derived from X-ray small-angle scattering (shown in grey; Svergun et al., 1998b). The crystallographic cordinates were taken from the Brookhaven Protein Data Bank (Bernstein et al., 1977), entry 1E79. View A was rotated counterclockwise by 90° around the y axis and view B around the z-axis.

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