DNA-dependent RNA polymerase (RNAP) catalyzes the transcription of DNA into RNA using the four ribonucleoside triphosphates as substrates. a ribonucleoside 5'-triphosphate + RNA(n) = diphosphate + RNA(n+1) Part of the 13-subunit RNA polymerase complex. Rpo1N and Rpo5 form a cleft which docks Rpo13. Belongs to the archaeal Rpo5/eukaryotic RPB5 RNA polymerase subunit family.