1.14.13.222 FAD contains an FAD binding domain 1.14.13.222 FAD AuaG purifies as a slightly yellow protein and the binding cofactor is flavin–adenine dinucleotide 1.14.13.222 NADH NADH is preferred over NADPH 1.14.13.222 NADH preferred over NADPH 1.14.13.222 NADPH NADH is preferred over NADPH