Fig. 4: Structural changes of the FAD-binding sites in CtdE upon substrate binding.

a “Out” FAD-binding site. b “In” FAD-binding site. c Structural overlay of “out” FAD and “in” FAD-binding sites.

a “Out” FAD-binding site. b “In” FAD-binding site. c Structural overlay of “out” FAD and “in” FAD-binding sites.