Subsequently, a node that corresponds to the RpoBC protein has been identified within the transcriptional machinery. It is encoded by a fused gene that contains fully functional RNA polymerase β and β subunits 68.
Seguidamente, dentro de la maquinaria transcripcional se identificó un nodo correspondiente con la proteína RpoBC codificada por un gen fusionado que contiene las subunidades β y β´ de la ARN polimerasa; la cual es plenamente funcional 68.