# OC Root 2nd 3rd 4th 5th PC Gene/Definition OC.120487 Bacteria.96180 Proteobacteria.565120 Deltaproteobacteria.62685 Desulfobulbus.3839 dpr.2378 dpr:Despr_2511 extracellular solute-binding protein family 1; K11069 spermidine/putrescine transport system substrate-binding protein