# OC Root 2nd 3rd 4th PC Gene/Definition OC.40748 Bacteria.23854 Proteobacteria.101548 Alphaproteobacteria.137194 phl.329 phl:KKY_1252 oligopeptide transport ATP-binding protein OppD; K02031 peptide/nickel transport system ATP-binding protein; K02032 peptide/nickel transport system ATP-binding protein