DNA-binding protein that is probably part of the rDNA transcription apparatus. Acts synergetically with the RPA49 subunit of RNA polymerase I during rDNA transcription. May participate in mutagenesis control. Interacts with FPR1. Interacts with an unidentified DNA helicase. Associates with rDNA. Colocalizes with FOB1. Present with 19000 molecules/cell in log phase SD medium.