# OC Root 2nd 3rd 4th 5th PC Gene/Definition OC.40382 Bacteria.24387 Proteobacteria.757806 Gammaproteobacteria.389813 Vibrio.30290 vni.4536 vni:VIBNI_B1097 appD; Oligopeptide transport ATP-binding protein appD; K02031 peptide/nickel transport system ATP-binding protein