# OC Root 2nd 3rd 4th PC Gene/Definition OC.226762 Bacteria.396865 Aquificae.1671 Hydrogenobacter.533 hth.149 hth:HTH_0147 nirJ; predicted Fe-S oxidoreductases OC.226762 Bacteria.396865 Aquificae.1671 Hydrogenobacter.533 hte.149 hte:Hydth_0148 Radical SAM domain protein