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. Author manuscript; available in PMC: 2013 Nov 14.
Published in final edited form as: J Am Chem Soc. 2012 Nov 5;134(45):18843–18852. doi: 10.1021/ja309216v

Table 1.

Activities of [FeFe]- and [NiFe]-Hydrogenases.1

Reaction FeFe NiFe
H2 Oxidation 28000 700
H2 Production 6000–9000 700

Rates quoted in moles of H2 per mole of enzyme per second measured at 30 °C.