# OC Root 2nd 3rd 4th PC Gene/Definition OC.336207 Archaea.56910 Euryarchaeota.41597 Archaeoglobus.5559 ave.1758 ave:Arcve_1855 Hydrogen dehydrogenase; K14126 F420-non-reducing hydrogenase large subunit [EC:1.12.99.- 1.8.98.5]