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EC 1.1.3.37 Details
EC number
1.1.3.37
Accepted name
D-arabinono-1,4-lactone oxidase
Reaction
D-arabinono-1,4-lactone + O2 = dehydro-D-arabinono-1,4-lactone + H2O2
Other name(s)
D-arabinono-γ-lactone oxidase, ALO
Systematic name
D-arabinono-1,4-lactone:oxygen oxidoreductase
CAS registry number
182372-12-9
Comment
A flavoprotein (FAD). L-Galactono-1,4-lactone, L-gulono-1,4-lactone and L-xylono-1,4-lactone can also act as substrates but D-glucono-1,5-lactone, L-arabinono-1,4-lactone, D-galactono-1,4-lactone and D-gulono-1,4-lactone cannot [1]. With L-galactono-1,4-lactone as substrate, the product is L-ascorbate [3]. The product dehydro-D-arabinono-1,4-lactone had previously been referred to erroneously as D-erythroascorbate (CAS no.: 5776-48-7; formula: C6H8O6), although it was referred to as a five-carbon compound [1].
History
created 1999
EC Tree
1.1.99.15 created 1978, deleted 1980
1.1.99.17 created 1982, deleted 2003