IUBMB Enzyme Nomenclature


Accepted name: nitrilotriacetate monooxygenase

Reaction: nitrilotriacetate + FMNH2 + H+ + O2 = iminodiacetate + glyoxylate + FMN + H2O

Systematic name: nitrilotriacetate,FMNH2:oxygen oxidoreductase (glyoxylate-forming)

Comments: Requires Mg2+. The enzyme from Aminobacter aminovorans (previously Chelatobacter heintzii) is part of a two component system that also includes EC (FMN reductase), which provides reduced flavin mononucleotide for this enzyme.

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


1. Uetz, T., Schneider, R., Snozzi, M. and Egli, T. Purification and characterization of a two-component monooxygenase that hydroxylates nitrilotriacetate from "Chelatobacter" strain ATCC 29600. J. Bacteriol. 174 (1992) 1179-1188. [PMID: 1735711]

2. Knobel, H.R., Egli, T. and van der Meer, J.R. Cloning and characterization of the genes encoding nitrilotriacetate monooxygenase of Chelatobacter heintzii ATCC 29600. J. Bacteriol. 178 (1996) 6123-6132. [PMID: 8892809]

3. Xu, Y., Mortimer, M.W., Fisher, T.S., Kahn, M.L., Brockman, F.J. and Xun, L. Cloning, sequencing, and analysis of a gene cluster from Chelatobacter heintzii ATCC 29600 encoding nitrilotriacetate monooxygenase and NADH:flavin mononucleotide oxidoreductase. J. Bacteriol. 179 (1997) 1112-1116. [PMID: 9023192]

[EC created 2011]

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