# OC Root 2nd 3rd 4th 5th 6th PC Gene/Definition OC.40750 Bacteria.23856 Proteobacteria.431335 Alphaproteobacteria.272866 Ruegeria.5101 Ruegeria_sp_.5033 rue.792 rue:DT065_03555 ABC transporter ATP-binding protein; K02031 peptide/nickel transport system ATP-binding protein; K02032 peptide/nickel transport system ATP-binding protein