ENTRY       EC 1.1.3.23
NAME        Thiamin oxidase
            Thiamin dehydrogenase
CLASS       Oxidoreductases
            Acting on the CH-OH group of donors
            With oxygen as acceptor
SYSNAME     Thiamin:oxygen 5-oxidoreductase
REACTION    Thiamine + 2 O2 = Thiamine acetic acid + 2 H2O2
SUBSTRATE   Thiamine
            O2
PRODUCT     Thiamine acetic acid
            H2O2
COFACTOR    FAD
COMMENT     A flavoprotein (FAD).  The product differs from thiamine in
            replacement of -CH2.CH2.OH by -CH2.COOH; the two-step oxidation
            proceeds without the release of the intermediate aldehyde from
            the enzyme.
PATHWAY     PATH: MAP00730  Thiamine metabolism
DBLINKS     University of Geneva ENZYME DATA BANK: 1.1.3.23
            WIT (What Is There) Metabolic Reconstruction: 1.1.3.23
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