# OC Root 2nd 3rd 4th PC Gene/Definition OC.572072 Archaea.28131 Euryarchaeota.31667 Methanoculleus.505 mbg.1436 mbg:BN140_1514 PHP domain-containing protein OC.572072 Archaea.28131 Euryarchaeota.31667 Methanoculleus.505 mema.1892 mema:MMAB1_1946 conserved protein of unknown function OC.572072 Archaea.28131 Euryarchaeota.31667 - mpi.121 mpi:Mpet_0005 PHP domain protein