Table 1.

Experimentally determined copper reduction potentials $E^0$ (Cu ^II/I) vs. NHE, ET driving forces $\mathrm{\Delta }{G}^0$, and ET rates $k$, for WT azurin and mutants

Mutant	$E^0$ (CuII/I)/V	$\mathrm{\Delta }{G}^0$/eV	$k\cdot$s−1⋅10−5
WT	0.30(2)	−0.70(2)	$11\left(2\right)$
N47D	0.38(2)	−0.62(2)	$5.2\left(7\right)$
N47S	0.42(2)	−0.58(2)	$2.5\left(2\right)$
N47L	0.44(2)	−0.56(2)	$21\left(4\right)$