ExplorEnz: EC 1.7.2.3

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1.7.2.3

Accepted name:

trimethylamine-N-oxide reductase

Reaction:

trimethylamine + 2 (ferricytochrome c)-subunit + H₂O = trimethylamine N-oxide + 2 (ferrocytochrome c)-subunit + 2 H⁺

For diagram of dimethyl sulfide catabolism, click here

Other name(s):

TMAO reductase; TOR; torA (gene name); torZ (gene name); bisZ (gene name); trimethylamine-N-oxide reductase (cytochrome c)

Systematic name:

trimethylamine:cytochrome c oxidoreductase

Comments:

Contains bis(molybdopterin guanine dinucleotide)molybdenum cofactor. The reductant is a membrane-bound multiheme cytochrome c. Also reduces dimethyl sulfoxide to dimethyl sulfide.

Links to other databases:

BRENDA, EXPASY, KEGG, MetaCyc, PDB, CAS registry number: 37256-34-1

References:

1.	Arata, H., Shimizu, M. and Takamiya, K. Purification and properties of trimethylamine N-oxide reductase from aerobic photosynthetic bacterium Roseobacter denitrificans. J. Biochem. (Tokyo) 112 (1992) 470–475. [PMID: 1337081]
2.	Knablein, J., Dobbek, H., Ehlert, S. and Schneider, F. Isolation, cloning, sequence analysis and X-ray structure of dimethyl sulfoxide trimethylamine N-oxide reductase from Rhodobacter capsulatus. Biol. Chem. 378 (1997) 293–302. [PMID: 9165084]
3.	Czjzek, M., Dos Santos, J.P., Pommier, J., Giordano, G., Méjean, V. and Haser, R. Crystal structure of oxidized trimethylamine N-oxide reductase from Shewanella massilia at 2.5 Å resolution. J. Mol. Biol. 284 (1998) 435–447. [DOI] [PMID: 9813128]
4.	Gon, S., Giudici-Orticoni, M.T., Mejean, V. and Iobbi-Nivol, C. Electron transfer and binding of the c-type cytochrome TorC to the trimethylamine N-oxide reductase in Escherichia coli. J. Biol. Chem. 276 (2001) 11545–11551. [DOI] [PMID: 11056172]
5.	Zhang, L., Nelson, K.J., Rajagopalan, K.V. and George, G.N. Structure of the molybdenum site of Escherichia coli trimethylamine N-oxide reductase. Inorg. Chem. 47 (2008) 1074–1078. [PMID: 18163615]
6.	Yin, Q.J., Zhang, W.J., Qi, X.Q., Zhang, S.D., Jiang, T., Li, X.G., Chen, Y., Santini, C.L., Zhou, H., Chou, I.M. and Wu, L.F. High hydrostatic pressure inducible trimethylamine N-oxide reductase improves the pressure tolerance of piezosensitive bacteria Vibrio fluvialis. Front. Microbiol. 8:2646 (2017). [PMID: 29375513]

[EC 1.7.2.3 created 2002, modified 2018]