# OC Root 2nd 3rd 4th PC Gene/Definition OC.168954 Archaea.31841 Euryarchaeota.3634 Methanoculleus.787 mem.300 mem:Memar_0274 RNA-3'-phosphate cyclase; K01974 RNA 3'-terminal phosphate cyclase (ATP) [EC:6.5.1.4] OC.168954 Archaea.31841 Euryarchaeota.3634 Methanoculleus.787 mbg.170 mbg:BN140_0153 RNA 3'-terminal phosphate cyclase; K01974 RNA 3'-terminal phosphate cyclase (ATP) [EC:6.5.1.4] OC.168954 Archaea.31841 Euryarchaeota.3634 Methanoculleus.787 mema.249 mema:MMAB1_0198 rtcA; RNA 3'-terminal phosphate cyclase; K01974 RNA 3'-terminal phosphate cyclase (ATP) [EC:6.5.1.4]