The Enzyme Database

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Accepted name: formate dehydrogenase-N
Reaction: formate + a quinone = CO2 + a quinol
Other name(s): Fdh-N; FdnGHI; nitrate-inducible formate dehydrogenase; formate dehydrogenase N; FDH-N; nitrate inducible Fdn; nitrate inducible formate dehydrogenase
Systematic name: formate:quinone oxidoreductase
Comments: The enzyme contains molybdopterin-guanine dinucleotides, five [4Fe-4S] clusters and two heme b groups. Formate dehydrogenase-N oxidizes formate in the periplasm, transferring electrons via the menaquinone pool in the cytoplasmic membrane to a dissimilatory nitrate reductase (EC, which transfers electrons to nitrate in the cytoplasm. The system generates proton motive force under anaerobic conditions [3].
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc
1.  Enoch, H.G. and Lester, R.L. The purification and properties of formate dehydrogenase and nitrate reductase from Escherichia coli. J. Biol. Chem. 250 (1975) 6693–6705. [PMID: 1099093]
2.  Jormakka, M., Tornroth, S., Byrne, B. and Iwata, S. Molecular basis of proton motive force generation: structure of formate dehydrogenase-N. Science 295 (2002) 1863–1868. [PMID: 11884747]
3.  Jormakka, M., Tornroth, S., Abramson, J., Byrne, B. and Iwata, S. Purification and crystallization of the respiratory complex formate dehydrogenase-N from Escherichia coli. Acta Crystallogr. D Biol. Crystallogr. 58 (2002) 160–162. [PMID: 11752799]
[EC created 2010]

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