# OC Root 2nd 3rd 4th PC Gene/Definition OC.67231 Bacteria.20449 Proteobacteria.215043 Gammaproteobacteria.413710 gai.4148 gai:IMCC3135_22065 phoR; Phosphate regulon sensor protein PhoR; K07636 two-component system, OmpR family, phosphate regulon sensor histidine kinase PhoR [EC:2.7.13.3]