# OC Root 2nd 3rd 4th 5th 6th PC Gene/Definition OC.66784 Bacteria.96373 Proteobacteria.400443 Alphaproteobacteria.229127 Methylobacterium.14343 Methylobacterium_sp_.4359 met.3601 met:M446_3864 binding-protein-dependent transport systems inner membrane component; K02053 putative spermidine/putrescine transport system permease protein