Predicted to enable transcription coactivator activity. Predicted to be involved in several processes, including negative regulation of GTPase activity; positive regulation by host of viral transcription; and regulation of RNA metabolic process. Predicted to be located in chromatin and nuclear lumen. Predicted to be part of preribosome, large subunit precursor. Predicted to be active in nucleus. Orthologous to human RRP1B (ribosomal RNA processing 1B). [provided by Alliance of Genome Resources, Apr 2022]