Can oxidize L-gulono-1,4-lactone as well as D-arabinono-1,4-lactone and L-galactono-1,4-lactone. D-arabinono-1,4-lactone + O2 = dehydro-D-arabinono-1,4-lactone + H(+) + H2O2 Cofactor biosynthesis; D-erythroascorbate biosynthesis; dehydro-D-arabinono-1,4-lactone from D-arabinose: step 2/2. Monomer. Membrane-embedded. The N-terminus is blocked. Present with 6190 molecules/cell in log phase SD medium. Belongs to the oxygen-dependent FAD-linked oxidoreductase family.