# OC Root 2nd 3rd 4th PC Gene/Definition OC.508515 Archaea.28966 Euryarchaeota.32749 Methanosaeta.425 mtp.249 mtp:Mthe_0236 DHHA2 domain protein; K15986 manganese-dependent inorganic pyrophosphatase [EC:3.6.1.1] OC.508515 Archaea.28966 Euryarchaeota.32749 Methanosaeta.425 mcj.1483 mcj:MCON_1906 ppaC; manganese-dependent inorganic pyrophosphatase; K15986 manganese-dependent inorganic pyrophosphatase [EC:3.6.1.1] OC.508515 Archaea.28966 Euryarchaeota.32749 Methanosaeta.425 mhi.259 mhi:Mhar_0188 Manganese-dependent inorganic pyrophosphatase; K15986 manganese-dependent inorganic pyrophosphatase [EC:3.6.1.1]