Table 1.

The redox potentials for redox couples in the electron transfer system of cell mitochondria69

Half‐reaction	Redox couple	Redox potentiala) (E 0) [V]
O2 + 4H+ + 4e− → 2H2O	O2/H2O	1.23
Cytochromesox + e− → Cytochromesre	Cytochromesox/Cytochromesre	0.29–0.08
FMN + 2H+ + 2e− → FMNH2	FMN2+/FMNH2	−0.21
FAD + 2H+ + 2e− → FADH2	FAD2+/FADH2	−0.22
NAD + 2H+ + 2e− → NADH + H+	NAD+/NADH	−0.32
NADP + 2H+ + 2e− → NADPH + H+	NADP+/NADPH	−0.32

^a)pH = 7.0.