The Enzyme Database

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Accepted name: alditol oxidase
Reaction: an alditol + O2 = an aldose + H2O2
Other name(s): xylitol oxidase; xylitol:oxygen oxidoreductase; AldO
Systematic name: alditol:oxygen oxidoreductase
Comments: The enzyme from Streptomyces sp. IKD472 and from Streptomyces coelicolor is a monomeric oxidase containing one molecule of FAD per molecule of protein [1,2]. While xylitol (five carbons) and sorbitol (6 carbons) are the preferred substrates, other alditols, including L-threitol (four carbons), D-arabinitol (five carbons), D-galactitol (six carbons) and D-mannitol (six carbons) can also act as substrates, but more slowly [1,2]. Belongs in the vanillyl-alcohol-oxidase family of enzymes [2].
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, PDB, CAS registry number: 177322-52-0
1.  Yamashita, M., Omura, H., Okamoto, E., Furuya, Y., Yabuuchi, M., Fukahi, K. and Murooka, Y. Isolation, characterization, and molecular cloning of a thermostable xylitol oxidase from Streptomyces sp. IKD472. J. Biosci. Bioeng. 89 (2000) 350–360. [DOI] [PMID: 16232758]
2.  Heuts, D.P., van Hellemond, E.W., Janssen, D.B. and Fraaije, M.W. Discovery, characterization, and kinetic analysis of an alditol oxidase from Streptomyces coelicolor. J. Biol. Chem. 282 (2007) 20283–20291. [DOI] [PMID: 17517896]
3.  Forneris, F., Heuts, D.P., Delvecchio, M., Rovida, S., Fraaije, M.W. and Mattevi, A. Structural analysis of the catalytic mechanism and stereoselectivity in Streptomyces coelicolor alditol oxidase. Biochemistry 47 (2008) 978–985. [DOI] [PMID: 18154360]
[EC created 2002, modified 2008]

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