Fatty acyl-CoA dehydrogenase catalyzes the initial step in the process of
oxidation of fatty acids.
Fatty Acyl-S-CoA + E-FAD <=> Trans-
2-Enoyl-S-CoA + E-FADH2
The FAD and FADH2 in the reaction are enzyme-bound. Electrons from FADH2 are donated to coenzyme Q in the electron transport system (Figure 18.17).