DNA-directed RNA polymerase I subunit RPA34 (CD3EAP)

DNA-dependent RNA polymerase catalyzes the transcription of DNA into RNA using the four ribonucleoside triphosphates as substrates. Component of RNA polymerase I synthesizes ribosomal RNA precursors.

Isoform 1 is involved in UBTF-activated transcription, presumably at a step after PIC formation. .