# OC Root 2nd 3rd 4th PC Gene/Definition OC.119860 Bacteria.374167 Firmicutes.229067 Firmicutes___Clostridia.7042 ova.288 ova:OBV_00660 rnfB; electron transport complex protein RnfB; K03616 Na+-translocating ferredoxin:NAD+ oxidoreductase subunit B [EC:7.2.1.2]