1. International Union of Biochemistry Commission, “Enzyme Nomenclature. Recommendations of the International Union of Pure and Applied Chemistry and the International Union of Biochemistry.” Elsevier, Amsterdam, 1973
2. “Flavins and Flavoproteins”;Massey Palmer,1971
3. The Reactivity of Flavoproteins with Sulfite
4. Putrescine Oxidase from Micrococcus rubens
5. This definition includes three enzymes which appear to oxidize carbonyl groups, namely, pyruvate oxidaseEC 15.3.3), oxalate oxidase (EC 1.2.3.4), and glyoxylate oxidase (EC 1.2.3.5). The definition of Eq. (1) will hold if the actual (enzyme-bound) substrate to be oxidized by flavin in the first two cases is a decarboxylated substrate–thiamine pyrophosphate adduet (XH = — C(R)=R') and, in the third case, the hydrate of glyoxylate(—XH = —OH). Pyruvate oxidase contains thiamine pyrophosphate (1), and it is reasonable to suppose that oxalate oxidase also utilizes this coenzyme.