# OC Root	2nd	3rd	PC	Gene/Definition
OC.335199	Archaea.12659	Crenarchaeota.8765	hbu.363	hbu:Hbut_0372   Fe-S cluster-containing hydrogenase component 1
OC.335199	Archaea.12659	Crenarchaeota.8765	pfm.1063	pfm:Pyrfu_1083   Fe-S cluster-containing hydrogenase component 1
OC.335199	Archaea.12659	Crenarchaeota.8765	pdl.914	pdl:Pyrde_0920   Fe-S cluster-containing hydrogenase component 1