Figure 3.

Redox potential. A, Cyclic voltammograms taken in 100 μm solutions of AtFd1 (bold gray), AtFd2 (bold black), AtFd3 (fine gray), and AtFd4 (fine black), versus a standard hydrogen electrode. Results are typical of three independent measurements. B, Comparison of calculated potentials with known measurements of NADPH and maize proteins: FdI, Matsumura et al. (1999); FdIII, Akashi et al. (1999); leaf FNR (L-FNR) and root FNR (R-FNR), Aliverti et al. (2001). sd was less than 5 mV in all cases.