# OC Root 2nd 3rd 4th PC Gene/Definition OC.40748 Bacteria.23854 Proteobacteria.74445 Alphaproteobacteria.120587 mes.3662 mes:Meso_3727 oligopeptide/dipeptide ABC transporter, ATPase subunit; K02031 peptide/nickel transport system ATP-binding protein; K02032 peptide/nickel transport system ATP-binding protein