*5.B.1 The Phagocyte (gp91phox) NADPH Oxidase Family
*5.B.2 The Eukaryotic Cytochrome b561 (Cytb561) Family
*5.B.3 The Geobacter Nanowire Electron Transfer (G-NET) Family
*5.B.4 The Plant Photosystem I Supercomplex (PSI) Family
*5.B.5 The Extracellular Metal Oxido-Reductase (EMOR) Family
*5.B.6 The Transmembrane Epithelial Antigen Protein-3 Ferric Reductase (STEAP) Family
*5.B.7 The YedZ (YedZ) Family
*5.B.8 The Trans-Outer Membrane Electron Transfer Porin/Cytochrome Complex (ET-PCC) Family
*5.B.9 The Porin-Cytochrome c (Cyc2) Family