rpoD DNA-dependent RNA polymerase catalyzes the transcription of DNA into RNA using the four ribonucleoside triphosphates as substrates. RPOD_METJA 191 MITIKEKRKTRIGEEFIFSLKAPISFSNAIRRIMISEVPTFAIEDVYIYENSSSMDDEILAHRLGLIPIKGKPLLENEVITFTLEKEGPCTVYSSDLKSENGEVAFKNIPIVKLGKGQRIQIECEAIPGIGKVHAKWQPCNAVYKQIADDEVEFFVETFGQMEAEEILEEAVKILKNKAESFLQQLEMIEQ MJ0192 DNA-directed RNA polymerase subunit D