# OC Root	2nd	3rd	4th	PC	Gene/Definition
OC.277591	Archaea.28160	Euryarchaeota.31702	Methanoculleus.539	mem.352	mem:Memar_0354   Na+/Ca+ antiporter, CaCA family; K07301 cation:H+ antiporter
OC.277591	Archaea.28160	Euryarchaeota.31702	Methanoculleus.539	mbg.1466	mbg:BN140_1545   Na+/Ca+ antiporter; K07301 cation:H+ antiporter
OC.277591	Archaea.28160	Euryarchaeota.31702	Methanoculleus.539	mema.1928	mema:MMAB1_1982   conserved membrane protein of unknown function; K07301 cation:H+ antiporter
OC.277591	Archaea.28160	Euryarchaeota.31702	-	mpi.459	mpi:Mpet_0392   Na+/Ca+ antiporter, CaCA family; K07301 cation:H+ antiporter