# OC Root 2nd 3rd 4th 5th 6th PC Gene/Definition OC.645666 Bacteria.265157 Proteobacteria.432002 Alphaproteobacteria.273556 Ruegeria.5794 Ruegeria_sp_.5726 rue.1485 rue:DT065_07485 phoU; phosphate transport system regulatory protein PhoU; K02039 phosphate transport system protein