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. 2014 Jul 1;107(1):156–164. doi: 10.1016/j.bpj.2014.05.016

Figure 2.

Figure 2

Rotary torque. (a) Time course of the stepping rotation of wild-type F1 in the presence of 200 nM ATP (right) or 100 μM UTP (left). We exchanged the buffer from 200 nM ATP to 100 μM UTP. Thin lines show 17 successive steps, with their averages (thick orange lines). The thick cyan lines show the linear fittings of the average step between 40° and 80°. The trajectories are aligned at 60°. (b) The average angular velocity in the presence of UTP or RTP divided by that of ATP, ωNTP/ωATP, was estimated from the slope of the fitted straight line in Fig. 2a. (c) Torque amplitudes (N) generated by ATP, UTP, and RTP are presented as red, blue, and green bars, respectively. To see this figure in color, go online.