"Ryohei Takeishi,Fumitaka Kudo,Mario Numakura,Tadashi Eguchi","Epimerization at C-3�f�f in Butirosin Biosynthesis by an NAD(+)-Dependent Dehydrogenase BtrE and an NADPH-Dependent Reductase BtrF",,"ChemBioChem",,"Vol. 16","No. 3","pp. 487-495",2015,Feb.