1.14.13.38 anhydrotetracycline + NADPH + H+ + O2 - 1.14.13.38 anhydrotetracycline + NADPH + O2 tetracycline and chlortetracycline biosynthetic pathways 1.14.13.38 anhydrotetracycline + NADPH + O2 chlortetracycline biosynthetic pathway 1.14.13.38 anhydrotetracycline + NADPH + O2 involved in the biosynthesis of tetracyclines 1.14.13.38 anhydrotetracycline + NADPH + O2 the enzyme catalyzes a hydroxylation of the anthracycline structure at position C-6 after biosynthesis of the polyketide backbone is completed, Biosynthesis of oxytetracycline, overview