ExplorEnz: EC 1.12.5.1

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1.12.5.1

Accepted name:

hydrogen:quinone oxidoreductase

Reaction:

H₂ + menaquinone = menaquinol

Glossary:

methyl viologen = 1,1′-dimethyl-4,4′-bipyridine-1,1′-diium
benzyl viologen = 1,1′-dibenzyl-4,4′-bipyridine-1,1′-diium

Other name(s):

hydrogen-ubiquinone oxidoreductase; hydrogen:menaquinone oxidoreductase; membrane-bound hydrogenase; quinone-reactive Ni/Fe-hydrogenase

Systematic name:

hydrogen:quinone oxidoreductase

Comments:

Contains nickel, iron-sulfur clusters and cytochrome b. Also catalyses the reduction of water-soluble quinones (e.g. 2,3-dimethylnaphthoquinone) or viologen dyes (benzyl viologen or methyl viologen).

Links to other databases:

BRENDA, EXPASY, KEGG, MetaCyc, PDB, CAS registry number: 151616-65-8

References:

1.	Dross, F., Geisler, V., Lenger, R., Theis, F., Krafft, T., Fahrenholz, F., Kojro, E. , Duchêne, A., Tripier, D., Juvenal, K. and Kröger, A. The quinone-reactive Ni/Fe-hydrogenase of Wolinella succinogenes. Eur. J. Biochem. 206 (1992) 93–102. [DOI] [PMID: 1587288]
2.	Dross, F., Geisler, V., Lenger, R., Theis, F., Krafft, T., Fahrenholz, F., Kojro, E., Duchene, A., Tripier, D. and Juvenal, K. Erratum to "The quinone-reactive Ni/Fe-hydrogenase of Wolinella succinogenes". Eur. J. Biochem. 214 (1993) 949–950. [DOI] [PMID: 8319698]
3.	Gross, R., Simon, J., Lancaster, C.R.D. and Kroger, A. Identification of histidine residues in Wolinella succinogenes hydrogenase that are essential for menaquinone reduction by H-2. Mol. Microbiol. 30 (1998) 639–646. [DOI] [PMID: 9822828]
4.	Bernhard, M., Benelli, B., Hochkoeppler, A., Zannoni, D. and Friedrich, B. Functional and structural role of the cytochrome b subunit of the membrane-bound hydrogenase complex of Alcaligenes eutrophus H16. Eur. J. Biochem. 248 (1997) 179–186. [DOI] [PMID: 9310376]
5.	Ferber, D.M. and Maier, R.J. Hydrogen-ubiquinone oxidoreductase activity by the Bradyrhizobium japonicum membrane-bound hydrogenase. FEMS Microbiol. Lett. 110 (1993) 257–264. [DOI] [PMID: 8354459]
6.	Ishii, M., Omori, T., Igarashi, Y., Adachi, O., Ameyama, M. and Kodama, T. Methionaquinone is a direct natural electron-acceptor for the membrane-bound hydrogenase in Hydrogenobacter thermophilus strain TK-6. Agric. Biol. Chem. 55 (1991) 3011–3016.

[EC 1.12.5.1 created 1999 as EC 1.12.99.3, transferred 2002 to EC 1.12.5.1]