DNA-directed RNA polymerase subunit alpha MEQKRPQLKARVDGDYGEFVLEPLARGYGVTIGNPIRRILMSSIPGTAVTSVYIEDVLHEFSTIPGVREDVIRLILNLKELVVKFHAPGPKTLTLRAQGEGEVRASAFEVPTDAEIVNPDLVIANLAEDGKLVMEVRVEEGEGYVSADKHATKDRINSIPVDAMFSPVRRVAYHVENTRVGQQTDLDRLILRVWTDGSAGPQEALDKAVEILRDELSVFGNVEPMPALESSYAAATPAAVYDPATATLPASVYDSPRQPDLGSLSINPQPFPTDQDTPRVTLEGLGLTTRVLHSLKEEGIDSVDALCALSDRDLKKVPGIGERSLDEIKQQLAQFGLALRD RPOA_DEIRA RNA polymerase subunit alpha DNA-dependent RNA polymerase catalyzes the transcription of DNA into RNA using the four ribonucleoside triphosphates as substrates. rpoA DR_2128 341 Transcriptase subunit alpha