# OC Root 2nd 3rd 4th 5th PC Gene/Definition OC.285328 Bacteria.96203 Proteobacteria.104260 Betaproteobacteria.164811 Burkholderia.81698 bstg.4029 bstg:WT74_20780 spermidine/putrescine ABC transporter substrate-binding protein; K11069 spermidine/putrescine transport system substrate-binding protein