# OC Root 2nd 3rd 4th PC Gene/Definition OC.67223 Bacteria.21447 Proteobacteria.215047 Betaproteobacteria.234977 bbay.2150 bbay:A4V04_12870 phosphate regulon sensor histidine kinase PhoR; K07636 two-component system, OmpR family, phosphate regulon sensor histidine kinase PhoR [EC:2.7.13.3]