IUBMB Enzyme Nomenclature


Accepted name: (methyl)glyoxal oxidase

Reaction: (1) glyoxal + H2O + O2 = glyoxylate + H2O2
(2) 2-oxopropanal + H2O + O2 = pyruvate + H2O2

Glossary: 2-oxopropanal = methylglyoxal

Other name(s): glx1 (gene name); glx2 (gene name)

Systematic name: (methyl)glyoxal:oxygen oxidoreductase

Comments: The enzyme, originally characterized from the white rot fungus Phanerochaete chrysosporium, utilizes a free radical-coupled copper complex for catalysis.

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


1. Kersten, P.J. and Kirk, T.K. Involvement of a new enzyme, glyoxal oxidase, in extracellular H2O2 production by Phanerochaete chrysosporium. J. Bacteriol. 169 (1987) 2195-2201. [PMID: 3553159]

2. Kersten, P.J. and Cullen, D. Cloning and characterization of cDNA encoding glyoxal oxidase, a H2O2-producing enzyme from the lignin-degrading basidiomycete Phanerochaete chrysosporium. Proc. Natl. Acad. Sci. USA 90 (1993) 7411-7413. [PMID: 8346264]

3. Kersten, P.J., Witek, C., vanden Wymelenberg, A. and Cullen, D. Phanerochaete chrysosporium glyoxal oxidase is encoded by two allelic variants: structure, genomic organization, and heterologous expression of glx1 and glx2. J. Bacteriol. 177 (1995) 6106-6110. [PMID: 7592374]

4. Whittaker, M.M., Kersten, P.J., Nakamura, N., Sanders-Loehr, J., Schweizer, E.S. and Whittaker, J.W. Glyoxal oxidase from Phanerochaete chrysosporium is a new radical-copper oxidase. J. Biol. Chem. 271 (1996) 681-687. [PMID: 8557673]

[EC created 2016]

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