Accepted name: L-galactonolactone oxidase
Reaction: L-galactono-1,4-lactone + O2 = L-ascorbate + H2O2
Other name(s): L-galactono-1,4-lactone oxidase
Systematic name: L-galactono-1,4-lactone:oxygen 3-oxidoreductase
Comments: A flavoprotein. Acts on the 1,4-lactones of L-galactonic, D-altronic, L-fuconic, D-arabinic and D-threonic acids; not identical with EC 220.127.116.11 L-gulonolactone oxidase. (cf. EC 18.104.22.168 galactonolactone dehydrogenase).
Links to other databases: BRENDA, EXPASY, KEGG, Metacyc, CAS registry number:
1. Bleeg, H.S. and Christensen, F. Biosynthesis of ascorbate in yeast. Purification of L-galactono-1,4-lactone oxidase with properties different from mammalian L-gulonolactone oxidase. Eur. J. Biochem. 127 (1982) 391-396. [PMID: 6754380]