1.14.13.200 tetracenomycin A2 + 2 O2 + 2 NAD(P)H + 2 H+ = tetracenomycin C + 2 NAD(P)+ + H2O - - 1.14.13.200 tetracenomycin A2 + 2 O2 + 2 NAD(P)H + 2 H+ = tetracenomycin C + 2 NAD(P)+ + H2O reaction proceeds via a monooxygenase-dioxygenase mechanism, deriving the 4- and 12a-OH groups of tetracenomycin C from two molecules of O2 and the 4a-OH group of etracenomycin C from a molecule of H2O -, 730547