# OC Root 2nd 3rd 4th PC Gene/Definition OC.40731 Bacteria.23912 Proteobacteria.81523 Alphaproteobacteria.125330 apb.80 apb:SAR116_0064 ABC transporter ATP-binding protein; K02031 peptide/nickel transport system ATP-binding protein; K02032 peptide/nickel transport system ATP-binding protein