SF1





rotor
stalk


Figure 1-2. Space-filling structural model ofEscherichia coli F1Fo ATP synthase. The
 model is based on a composite of high and low resolution structures taken
 from E. coli, yeast and bovine F1Fo ATP synthases. F1Fo subunits included in
 the model were u3 38ysab2C10. The subunits were color coded as follows: a,
 red; p, green; y, cyan; s, orange; 6, yellow; b, blue; a, brighter yellow; c,
 darker blue. The direction of the arrow indicates the direction of rotation of
 ysclo during ATP synthesis. The yellow and blue cylinders represent the a
 subunit and portions of the b subunit that currently have no high-resolution
 structures from any species.


catallytic
b_ core


peripheral
 stalk