# OC Root 2nd 3rd 4th PC Gene/Definition OC.305162 Archaea.66957 Euryarchaeota.52021 Methanoculleus.3481 mema.1657 mema:MMAB1_1695 Pyruvate synthase subunit porB (fragment); K00170 pyruvate ferredoxin oxidoreductase beta subunit [EC:1.2.7.1]