# OC Root 2nd 3rd 4th 5th PC Gene/Definition OC.110805 Bacteria.887170 Firmicutes.277784 Firmicutes___Clostridia.145888 Thermodesulfobium.975 tnr.366 tnr:Thena_0370 Nitrite reductase (NAD(P)H) OC.110805 Bacteria.887170 Firmicutes.277784 Firmicutes___Clostridia.145888 Thermodesulfobium.975 taci.354 taci:TDSAC_0365 Nitrite/Sulfite reductase ferredoxin-like half domain-containing protein