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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
1.5.3.3 created 1961, deleted 1972
1.5.3.8 created 1989, deleted 1992
1.5.3.9 created 1989, modified 1999, deleted 2002