RNA polymerase I specific transcription initiation factor RRN3 family protein. similar to RNA polymerase I specific transcription initiation factor RRN3 family protein [Arabidopsis thaliana] (TAIR:AT2G34750.1); similar to unnamed protein product [Vitis vinifera] (GB:CAO68517.1); contains InterPro domain Armadillo-type fold; (InterPro:IPR016024); contains InterPro domain RNA polymerase I specific transcription initiation factor RRN3 (InterPro:IPR007991)