. "Most of the bacterial and archaeal enzymes consist of only an oxidase domain and function together with bacterial ferredoxins." . "The enzyme from the delta-proteobacterium Sorangium cellulosum also includes a reductase domain that binds FAD, FMN and a [2Fe-2S] cluster." . "The similar enzymes from plants and animals use only NADPH as acceptor (cf. EC 1.14.13.39)." . . . "NO synthase" . "Nitric-oxide synthase (NAD(P)H-dependent)" . "Nitric oxide synthetase" . "2 L-arginine + 3 NAD(P)H + 4 O(2) = 2 L-citrulline + 2 nitric oxide + 3 NAD(P)(+) + 4 H(2)O." . "5,6,7,8-tetrahydrobiopterin" . "Ferriprotoporphyrin IX" .