RRN3 (RRN3 Homolog, RNA Polymerase I Transcription Factor) is a Protein Coding gene. Among its related pathways are RNA Polymerase I Promoter Escape and Gene Expression. Required for efficient transcription initiation by RNA polymerase I. Required for the formation of the competent preinitiation complex (PIC). Dissociates from pol I as a consequence of transcription. In vitro, cannot activate transcription in a subsequent transcription reaction