Table of standard reduction potentials for half-reactions important in biochemistry

The values below are standard reduction potentials for half-reactions measured at 25 °C, 1 atmosphere and a pH of 7 in aqueous solution.[1]

Half-reaction Δξ°'(V)
CH3COOH + 2 H+ + 2 e- → CH3CHO + H2O -0.581
2 H+ + 2 e- → H2 -0.421
NAD+ + H+ + 2 e- → NADH -0.320
NADP+ + H+ + 2 e- → NADPH -0.320
FAD + 2 H+ + 2 e- → FADH2 (coenzyme bonded to flavoproteins) -0.22
O2 + 2 H+ + 2 e- → H2O2 +0.7
O2 + 4 H+ + 4 e- → 2 H2O +1.64
P680+ + e- → P680 ~ +1.0

References

  1. ^ Berg JM, Tymoczko JL, Stryer L, (2001) Biochemistry, 5th edition, WH Freeman, New York