Fig. 4From: Electricigens in the anode of microbial fuel cells: pure cultures versus mixed communitiesProposed electron transfer mechanism of Shewanella. CymA, inner membrane tetraheme cytochrome; Cyt C3, Cytochrome C3; MtrA, periplasm decaheme cytochrome; MtrB, noncytochrome outer membrane protein; MtrC, outer membrane cytochrome; Cyt C, Cytochrome CBack to article page