Iron-Sulfur Protein (ISP) Superfamily
Iron-Sulfur proteins are found within many multi-component electron carrier systems, several of which transport protons and/or electrons across the membrane.
3.D.6 - The Ion (H+ or Na+)-translocating NADH:Ferredoxin Oxidoreductase (NFO or RNF) Family3.D.7 - The H2:Heterodisulfide Oxidoreductase (HHO) Family
3.D.8 - The Na+- or H+-Pumping Formyl Methanofuran Dehydrogenase (FMF-DH) Family
3.D.10 - The Prokaryotic Succinate Dehydrogenase (SDH) Family
3.D.11 - The Periplasmic Nitrate Reductase Complex (NAP) Complex Family
5.A.3 - The Prokaryotic Molybdopterin-containing Oxidoreductase (PMO) Family
5.B.4 - The Plant Photosystem I Supercomplex (PSI) Family
5.B.11 - The One Electron Transmembrane Transfer Complex (TmcABCD) Family
5.B.12 - The One Electron Transmembrane Transfer Complex (DsrMKJOP) Family
5.B.13 - The One Electron Transmembrane Transfer Complex (HmcABCDEF) Family