1.8.5.6 ? x * 108950, molybdoprotein SoeA carrying one [Fe4S4] cluster at the N-terminus, x * 26995, iron-sulfur protein SoeB, predicted to bind four [Fe4S4] clusters, and x * 35715, NrfD/PsrC-like membrane protein SoeC with eight transmembrane helices -, 739014 1.8.5.6 hexamer dimer of trimer (alphabetagamma)2 764198