1.3.99.31 FAD added to the reaction mixture 710999, 711020 1.3.99.31 FAD CRTI utilizes FAD as the sole redox-active cofactor, binding kinetics and structure analysis, molecular docking, overview. Oxygen, replaceable by quinones in its absence, is needed as the terminal electron acceptor. FAD, besides its catalytic role also displays a structural function by enabling the formation of enzymatically active CRTI membrane associates 726300 1.3.99.31 FAD involved in desaturation. FAD is a dissociable moiety and not covalently bound to the enzyme 712337 1.3.99.31 FAD required 763447 1.3.99.31 additional information no activity with FMN, NAD+, and NADP+ 726300