Predicted to enable telomeric DNA binding activity. Predicted to be involved in nuclear-transcribed mRNA catabolic process, nonsense-mediated decay. Predicted to act upstream of or within animal organ regeneration and liver development. Predicted to be located in cytoplasmic ribonucleoprotein granule; cytosol; and nucleus. Predicted to be part of exon-exon junction complex and polysome. Predicted to be active in cytoplasm. Orthologous to human UPF2 (UPF2 regulator of nonsense mediated mRNA decay). [provided by Alliance of Genome Resources, Apr 2022]