1.13.12.21 tetracenomycin F1 + O2 the enzyme is involved in the biosynthesis of tetracenomycin C Streptomyces glaucescens tetracenomycin D3 + H2O - ? 422076 1.13.12.21 tetracenomycin F1 + O2 i.e. 3,8,10,12-tetrahydroxy-1-methyl-6,11-dioxo-6,11-dihydrotetracene-2-carboxylate = 6,11-dihydro-3,8,10,12-tetrahydroxy-1-methyl-6,11-dioxo-2-naphthacenecarboxylic acid Streptomyces glaucescens tetracenomycin D3 + H2O i.e. 3,8,10,12-tetrahydroxy-1-methyl-11-oxo-6,11-dihydro-2-tetracenecarboxylate, i.e. 6,11-dihydro-3,8,10,12-tetrahydroxy-1-methyl-11-oxo-2-naphthacenecarboxylic acid ? 422076