# OC Root	2nd	3rd	4th	PC	Gene/Definition
OC.336213	Archaea.21799	Euryarchaeota.23137	Halorhabdus.629	hut.2055	hut:Huta_2102   nickel-dependent hydrogenase large subunit; K00436 NAD-reducing hydrogenase large subunit [EC:1.12.1.2]
OC.336213	Archaea.21799	Euryarchaeota.23137	Halorhabdus.629	hti.1837	hti:HTIA_1873   hoxH; nickel-depdendent hydrogenase, large subunit; K00436 NAD-reducing hydrogenase large subunit [EC:1.12.1.2]
OC.336213	Archaea.21799	Euryarchaeota.23137	-	harc.285	harc:HARCEL1_01245   Ni/Fe hydrogenase subunit alpha; K00436 NAD-reducing hydrogenase large subunit [EC:1.12.1.2]