# OC Root 2nd 3rd 4th 5th 6th PC Gene/Definition OC.411002 Bacteria.68249 Proteobacteria.497255 Betaproteobacteria.159272 Burkholderia.64261 Burkholderia_sp_.31403 bug.6218 bug:BC1001_PA6384 Retron-type RNA-directed DNA polymerase OC.411005 Bacteria.447700 Proteobacteria.145681 Betaproteobacteria.208084 Paraburkholderia.36190 - brh.678 brh:RBRH_00720 Reverse transcriptase (EC 2.7.7.49)