# OC Root 2nd 3rd 4th 5th 6th PC Gene/Definition OC.1782 Bacteria.5655 Nitrospirae.7297 Nitrospira.3856 - - nde.1845 nde:NIDE1908 putative Sensor histidine kinase OC.1783 Bacteria.5797 Proteobacteria.517251 Betaproteobacteria.196895 Nitrosomonas.4851 Nitrosomonas_sp_.3010 nii.2865 nii:Nit79A3_3263 multi-sensor hybrid histidine kinase