# OC Root 2nd 3rd 4th PC Gene/Definition OC.57927 Archaea.37071 Thaumarchaeota.2871 Nitrososphaera.1283 nvn.710 nvn:NVIE_007100 hyfB; hydrogenase 4, membrane subunit; K12137 hydrogenase-4 component B [EC:1.-.-.-] OC.57927 Archaea.37071 Thaumarchaeota.2871 Nitrososphaera.1283 nev.2347 nev:NTE_02450 formate hydrogenlyase subunit 3/multisubunit Na+/H+ antiporter, MnhD subunit; K12137 hydrogenase-4 component B [EC:1.-.-.-] OC.57927 Archaea.37071 Thaumarchaeota.2871 - taa.3114 taa:NMY3_03653 hyfB_3; Hydrogenase-4 component B; K12137 hydrogenase-4 component B [EC:1.-.-.-] OC.57927 Archaea.37071 Thaumarchaeota.2871 - ndv.897 ndv:NDEV_0880 hyfB; NiFe-hydrogenase-4 subunit B; K12137 hydrogenase-4 component B [EC:1.-.-.-]