IUBMB Enzyme Nomenclature


Accepted name: azobenzene reductase

Reaction: N,N-dimethyl-1,4-phenylenediamine + aniline + NADP+ = 4-(dimethylamino)azobenzene + NADPH + H+

Glossary: Methyl Yellow = 4-(dimethylamino)azobenzene

Other name(s): new coccine (NC)-reductase; NC-reductase; azo-dye reductase; orange II azoreductase; NAD(P)H:1-(4'-sulfophenylazo)-2-naphthol oxidoreductase; orange I azoreductase; azo reductase; azoreductase; nicotinamide adenine dinucleotide (phosphate) azoreductase; NADPH2-dependent azoreductase; dimethylaminobenzene reductase; p-dimethylaminoazobenzene azoreductase; dibromopropylaminophenylazobenzoic azoreductase; N,N-dimethyl-4-phenylazoaniline azoreductase; p-aminoazobenzene reductase; methyl red azoreductase; NADPH2:4-(dimethylamino)azobenzene oxidoreductase

Systematic name: N,N-dimethyl-1,4-phenylenediamine, aniline:NADP+ oxidoreductase

Comments: The reaction occurs in the reverse direction to that shown above. Other azo dyes, such as Methyl Red, Rocceline, Solar Orange and Sumifix Black B can also be reduced [2].

Links to other databases: BRENDA, EAWAG-BBD, EXPASY, KEGG, Metacyc, CAS registry number: 9029-31-6


1. Mueller, G.C. and Miller, J.A. The reductive cleavage of 4-dimethylaminoazobenzene by rat liver: the intracellular distribution of the enzyme system and its requirements for triphosphopyridine nucleotide. J. Biol. Chem. 180 (1949) 1125-1136.

2. Suzuki, Y., Yoda, T., Ruhul, A. and Sugiura, W. Molecular cloning and characterization of the gene coding for azoreductase from Bacillus sp. OY1-2 isolated from soil. J. Biol. Chem. 276 (2001) 9059-9065. [PMID: 11134015]

[EC created 1961 as EC, transferred 2002 to EC]

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