InterPro domain: IPR010031

This entry identifies a family of at least two different sugar 1,4 lactone oxidases, both involved in synthesising ascorbic acid or a derivative. These include L-gulono-1,4-lactone dehydrogenase from bacteria ([intenz:1.1.2.-]), L-gulonolactone oxidase ( 1.1.3.8 ) from mammals and D-arabinono-1,4-lactone oxidase Alo1 ( 1.1.3.37 ) from yeasts. Members are proposed to have the cofactor FAD covalently bound at a site specified by IPR006093 .