# OC Root 2nd 3rd 4th 5th PC Gene/Definition OC.110412 Bacteria.290987 Proteobacteria.416357 Alphaproteobacteria.251868 Pelagibacter.1287 pel.1221 pel:SAR11G3_01227 SSU ribosomal protein S7p (S5e); K02992 small subunit ribosomal protein S7