# OC Root 2nd 3rd 4th PC Gene/Definition OC.1227248 Archaea.92148 Thaumarchaeota.5254 Nitrososphaera.2566 nga.1902 nga:Ngar_c20090 hypothetical protein; K22043 ArsR family transcriptional regulator, zinc-responsive transcriptional repressor OC.1227248 Archaea.92148 Thaumarchaeota.5254 Nitrososphaera.2566 nvn.916 nvn:NVIE_009220 hypothetical protein