# OC Root 2nd 3rd 4th PC Gene/Definition OC.20851 Bacteria.571237 Proteobacteria.559250 Deltaproteobacteria.52475 dak.815 dak:DaAHT2_0822 4Fe-4S ferredoxin iron-sulfur binding domain protein; K03388 heterodisulfide reductase subunit A2 [EC:1.8.7.3 1.8.98.4 1.8.98.5 1.8.98.6] OC.20851 Bacteria.571237 Proteobacteria.559250 Deltaproteobacteria.52475 dak.2512 dak:DaAHT2_2650 fumarate reductase/succinate dehydrogenase flavoprotein domain protein; K03388 heterodisulfide reductase subunit A2 [EC:1.8.7.3 1.8.98.4 1.8.98.5 1.8.98.6]