Table 2.

The inverse rates (in ms) and normalized cumulative amplitudes of four kinetic phases (V₄ =2) found by four-exponential fitting of the experimental kinetics of the potential generated upon single-electron injection into CcO from P. denitrificans [9]

Set number	$k_1^{-1}$	$k_2^{-1}$	$k_3^{-1}$	$k_4^{-1}$	V1	V2	V3	SD (0.1μV)
1	0.020	0.140	0.636	2.28	0.336	1.06	1.62	5.82
2	0.021	0.150	0.716	2.37	0.350	1.09	1.66	5.91
3	0.022	0.155	0.758	2.41	0.358	1.11	1.68	6.00
4	0.026	0.189	0.824	2.16	0.418	1.20	1.68	6.85
5	0.010	0.149	0.769	2.21	0.259	1.11	1.68	7.75
6	0.010	0.15	0.8	2.6	0.24	1.08	1.68	10.5

Sets 1–4, Our fittings of the original experimental data file provided by Belevich et al. The rate of the first phase was kept constant, other three rates and four amplitudes were optimized. The merit function is the sum of relative deviations squared. C_V is the same as in set 5.

Set 5, Inverse rates, amplitudes U_i (recalculated in terms of V_i), and C_V =2.477 mV are from Belevich et al. (private communication).

Set 6, Inverse rates and amplitudes U_i (recalculated in terms of V_i) are from Fig. 2B caption of Ref. [9]; we assumed C_V =2.512 mV in order to obtain the minimum SD shown.