IUBMB Enzyme Nomenclature


Accepted name: hydrogen dehydrogenase [NAD(P)+]

Reaction: H2 + NAD(P)+ = H+ + NAD(P)H

Other name(s): hydrogenase II (ambiguous)

Systematic name: hydrogen:NAD(P)+ oxidoreductase

Comments: A nickel, iron, iron-sulfur protein. The enzyme from the archaeon Pyrococcus furiosus is part of a heterotetrameric complex where the α and δ subunits function as a hydrogenase while the β and γ subunits function as sulfur reductase (EC, sulfhydrogenase). Different from EC, hydrogen dehydrogenase (NADP+).

Links to other databases: BRENDA, EXPASY, KEGG, Metacyc, CAS registry number:


1. Ma, K., Weiss, R. and Adams, M.W. Characterization of hydrogenase II from the hyperthermophilic archaeon Pyrococcus furiosus and assessment of its role in sulfur reduction. J. Bacteriol. 182 (2000) 1864-1871. [PMID: 10714990]

[EC created 2013]

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