# OC Root 2nd 3rd 4th 5th 6th PC Gene/Definition OC.40720 Bacteria.491931 Proteobacteria.103462 Alphaproteobacteria.138484 Sinorhizobium.15724 Sinorhizobium_meliloti.10060 smx.4869 smx:SM11_pC1187 ABC transporter, ATP-binding component