# OC Root 2nd 3rd 4th PC Gene/Definition OC.110700 Archaea.17561 Euryarchaeota.17287 Halodesulfurarchaeum.1184 halh.293 halh:HTSR_0303 NAD(P)H-nitrite reductase OC.110700 Archaea.17561 Euryarchaeota.17287 Halodesulfurarchaeum.1184 hhsr.286 hhsr:HSR6_0289 NAD(P)H-nitrite reductase