# OC Root 2nd 3rd 4th 5th 6th PC Gene/Definition OC.154544 Bacteria.502564 Proteobacteria.148189 Betaproteobacteria.72909 Massilia.8899 Massilia_sp_.4191 masw.2807 masw:AM586_15075 nitrate ABC transporter permease; K02050 NitT/TauT family transport system permease protein