# OC Root	2nd	3rd	4th	PC	Gene/Definition
OC.110815	Archaea.28554	Euryarchaeota.32250	-	mhu.1578	mhu:Mhun_1737   nitrite and sulphite reductase 4Fe-4S region
OC.110815	Archaea.28554	Euryarchaeota.32250	Methanoregula.284	mbn.1411	mbn:Mboo_1439   nitrite and sulphite reductase 4Fe-4S region
OC.110815	Archaea.28554	Euryarchaeota.32250	Methanoregula.284	mfo.1473	mfo:Metfor_1559   NAD(P)H-nitrite reductase