# OC Root 2nd 3rd PC Gene/Definition OC.120490 Bacteria.96174 Fibrobacteres.1472 fsu.2286 fsu:Fisuc_2328 extracellular solute-binding protein family 1; K11069 spermidine/putrescine transport system substrate-binding protein OC.120490 Bacteria.96174 Fibrobacteres.1472 fsc.2492 fsc:FSU_2878 extracellular solute-binding protein, PotD/PotF family; K11069 spermidine/putrescine transport system substrate-binding protein