# OC Root 2nd 3rd 4th 5th 6th PC Gene/Definition OC.391928 Bacteria.953148 Proteobacteria.371734 Alphaproteobacteria.187350 Bartonella.2663 Bartonella_sp_.2403 barr.676 barr:Bra60_006830 type IV secretion system protein VirB6/type IV secretion system protein TrbL