Figure 1 - full size

 

Figure 1.
Fig. 1. Ribbon diagram of ETF-QO. The structure comprises three domains: FAD domain (blue), 4Fe4S cluster domain (red), and UQ-binding domain (green). Three redox centers are shown in sticks: FAD (golden yellow), 4Fe4S (magenta), and UQ (dark red). -Helices and -strands are numbered sequentially from the N terminus to the C terminus. The putative membrane-associated surface regions are shown in cyan. Mitochondrial membrane is depicted as blue shaded area.