# OC Root 2nd 3rd 4th 5th PC Gene/Definition OC.40818 Bacteria.24212 Proteobacteria.367778 Alphaproteobacteria.181560 Aminobacter.5856 aak.5770 aak:AA2016_5884 Oligopeptide transport ATP-binding protein OppD; K02031 peptide/nickel transport system ATP-binding protein