# OC Root 2nd 3rd 4th PC Gene/Definition OC.189625 Bacteria.251941 Proteobacteria.544996 Betaproteobacteria.252553 ndl.13 ndl:NASALF_017 rpoC; DNA-directed RNA RNA polymerase subunit beta; K03046 DNA-directed RNA polymerase subunit beta' [EC:2.7.7.6]