. "\"Catalysis of the reaction: D-arabinono-1,4-lactone + O(2) = dehydro-D-arabinono-1,4-lactone + H(2)O(2) + H(+).\" [EC:1.1.3.37, RHEA:23759]" . . "D-arabinono-1,4-lactone oxidase activity" . "D-arabinono-1,4-lactone:oxygen oxidoreductase activity" . "EC:1.1.3.37" . "KEGG:R02715" . "MetaCyc:1.1.3.37-RXN" . "RHEA:23759" . .