IUBMB Enzyme Nomenclature


Accepted name: 7-chloro-L-tryptophan oxidase

Reaction: 7-chloro-L-tryptophan + O2 = 2-imino-3-(7-chloroindol-3-yl)propanoate + H2O2

For diagram of reaction click here

Other name(s): RebO

Systematic name: 7-chloro-L-tryptophan:oxygen oxidoreductase

Comments: Contains a noncovalently bound FAD [1,2]. This enzyme catalyses a step in the biosynthesis of rebeccamycin, an indolocarbazole alkaloid produced by the bacterium Lechevalieria aerocolonigenes. During catalysis, the bound FAD is reoxidized at the expense of molecular oxygen, producing one molecule of hydrogen peroxide. The enzyme shows significant preference for 7-chloro-L-tryptophan over L-tryptophan [1].

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


1. Nishizawa, T., Aldrich, C.C. and Sherman, D.H. Molecular analysis of the rebeccamycin L-amino acid oxidase from Lechevalieria aerocolonigenes ATCC 39243. J. Bacteriol. 187 (2005) 2084-2092. [PMID: 15743957]

2. Howard-Jones, A.R. and Walsh, C.T. Enzymatic generation of the chromopyrrolic acid scaffold of rebeccamycin by the tandem action of RebO and RebD. Biochemistry 44 (2005) 15652-15663. [PMID: 16313168]

[EC created 2010]

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