# OC Root	2nd	3rd	4th	PC	Gene/Definition
OC.456074	Archaea.25581	Euryarchaeota.28335	Methanocella.1583	mpd.2532	mpd:MCP_2637   putative [NiFe]-hydrogenase small subunit
OC.456074	Archaea.25581	Euryarchaeota.28335	Methanocella.1583	mez.510	mez:Mtc_0486   Membrane bound hydrogenase subunit (ehaN-like)
OC.456074	Archaea.25581	Euryarchaeota.28335	Methanocella.1583	rci.2162	rci:RCIX483   [NiFe]-hydrogenase, small subunit (EchC-like)