1.6.2.6 FAD - 394510, 688825, 743845 1.6.2.6 FAD not covalently bound to the protein 394002 1.6.2.6 NADH - 394508, 394509, 743845 1.6.2.6 NADPH - 743845 1.6.2.6 NADPH 31% of NADH activity 394508 1.6.2.6 NADPH 54-80% of NADH activity 394509