# OC Root 2nd 3rd 4th 5th PC Gene/Definition OC.144081 Bacteria.441083 Proteobacteria.743 Alphaproteobacteria.322351 - mgm.2979 mgm:Mmc1_3561 outer membrane transport energization protein TonB OC.144081 Bacteria.441083 Cyanobacteria.60864 Synechococcus.7062 Synechococcus_sp_.867 cya.1863 cya:CYA_2030 TonB family protein OC.144081 Bacteria.441083 Cyanobacteria.60864 Synechococcus.7062 Synechococcus_sp_.867 cyb.2569 cyb:CYB_2726 TonB family protein