# OC Root 2nd 3rd 4th PC Gene/Definition OC.40716 Bacteria.23910 Proteobacteria.196896 Alphaproteobacteria.79156 mes.2054 mes:Meso_2059 oligopeptide/dipeptide ABC transporter, ATPase subunit; K02031 peptide/nickel transport system ATP-binding protein; K02032 peptide/nickel transport system ATP-binding protein