# OC Root	2nd	3rd	4th	PC	Gene/Definition
OC.336210	Archaea.99222	-	-	kcr.1075	kcr:Kcr_1119   Coenzyme F420-reducing hydrogenase, alpha subunit; K14126 F420-non-reducing hydrogenase large subunit [EC:1.12.99.- 1.8.98.5]
OC.336211	Archaea.33070	Euryarchaeota.38360	-	tar.341	tar:TALC_00335   Coenzyme F420-reducing hydrogenase, alpha subunit; K14126 F420-non-reducing hydrogenase large subunit [EC:1.12.99.- 1.8.98.5]
OC.336211	Archaea.33070	Euryarchaeota.38360	-	max.309	max:MMALV_03060   Methyl-viologen-reducing hydrogenase subunit A; K14126 F420-non-reducing hydrogenase large subunit [EC:1.12.99.- 1.8.98.5]
OC.336211	Archaea.33070	Euryarchaeota.38360	-	mer.484	mer:MMINT_04840   Methyl-viologen-reducing hydrogenase subunit A; K14126 F420-non-reducing hydrogenase large subunit [EC:1.12.99.- 1.8.98.5]
OC.336211	Archaea.33070	Euryarchaeota.38360	-	mear.978	mear:Mpt1_c10550   mvhA; F420-non-reducing hydrogenase iron-sulfur subunit A; K14126 F420-non-reducing hydrogenase large subunit [EC:1.12.99.- 1.8.98.5]
OC.336211	Archaea.33070	Euryarchaeota.38360	-	marc.1423	marc:AR505_1476   methyl viologen-reducing hydrogenase alpha subunit MvhA; K14126 F420-non-reducing hydrogenase large subunit [EC:1.12.99.- 1.8.98.5]
OC.336212	Archaea.88433	Euryarchaeota.74609	-	nge.2665	nge:Natgr_2863   coenzyme F420-reducing hydrogenase, alpha subunit; K14126 F420-non-reducing hydrogenase large subunit [EC:1.12.99.- 1.8.98.5]
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]