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. 2016 May 27;13:71–76. doi: 10.2142/biophysico.13.0_71

Figure 1.

Figure 1

Schematic illustration of electron and proton flow across (a) the outer membrane (OM) of S. oneidensis MR-1 and (b) the lipid membrane in a proteoliposome system. (a) The c-type cytochrome complex MtrCAB-OmcA, which is embedded in the OM, transports electrons from the periplasm to the cell exterior via the OM. This electron transport should associate with cationic transport. (b) Electron transport via a purified MtrCAB complex embedded in a proteoliposome coupled with potassium transport through valinomycin.