IUBMB Enzyme Nomenclature


Accepted name: 3,4-dihydroxyphenylalanine oxidative deaminase

Reaction: 2 L-dopa + O2 = 2 3,4-dihydroxyphenylpyruvate + 2 NH3

Glossary: L-dopa = 3,4-dihydroxy-L-phenylalanine

Other name(s): 3,4-dihydroxy-L-phenylalanine: oxidative deaminase; oxidative deaminase; DOPA oxidative deaminase; DOPAODA

Systematic name: 3,4-dihydroxy-L-phenylalanine:oxygen oxidoreductase (deaminating)

Comments: This enzyme is one of the three enzymes involved in L-dopa (3,4-dihydroxyphenylalanine) catabolism in the non-oxygenic phototrophic bacterium Rubrivivax benzoatilyticus OU5 (and not Rhodobacter sphaeroides OU5 as had been thought [1]), the other two being EC (dihydroxyphenylalanine reductive deaminase) and EC (3,4-dihydroxyphenylalanine transaminase). In addition to L-dopa, the enzyme can also use L-tyrosine, L-phenylalanine, L-tryptophan and glutamate as substrate, but more slowly. The enzyme is inhibited by NADH and 2-oxoglutarate.

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


1. Ranjith, N.K., Ramana, Ch.V. and Sasikala, Ch. Purification and characterization of 3,4-dihydroxyphenylalanine oxidative deaminase from Rhodobacter sphaeroides OU5. Can. J. Microbiol. 54 (2008) 829-834.

[EC created 2008]

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