# OC Root 2nd 3rd 4th PC Gene/Definition OC.57919 Archaea.35027 Euryarchaeota.7837 Aciduliprofundum.965 abi.670 abi:Aboo_0671 NADH/Ubiquinone/plastoquinone (complex I); K05568 multicomponent Na+:H+ antiporter subunit D OC.57919 Archaea.35027 Euryarchaeota.7837 Aciduliprofundum.965 acf.1086 acf:AciM339_1161 formate hydrogenlyase subunit 3/multisubunit Na+/H+ antiporter, MnhD subunit; K05568 multicomponent Na+:H+ antiporter subunit D OC.57919 Archaea.35027 Euryarchaeota.7835 - mhu.2267 mhu:Mhun_2586 Membrane bound hydrogenase subunit mbhH; K05568 multicomponent Na+:H+ antiporter subunit D OC.57919 Archaea.35027 Euryarchaeota.7836 - mla.945 mla:Mlab_0955 Membrane bound hydrogenase subunit mbhH