# OC Root 2nd 3rd 4th 5th 6th PC Gene/Definition OC.35929 Bacteria.276126 Proteobacteria.9405 Betaproteobacteria.226809 Variovorax.9066 Variovorax_paradoxus.8510 vpe.1093 vpe:Varpa_1074 spermidine/putrescine ABC transporter ATPase subunit; K02052 putative spermidine/putrescine transport system ATP-binding protein