Predicted to enable telomeric DNA binding activity. Acts upstream of or within animal organ regeneration and liver development. Predicted to be located in several cellular components, including cytoplasmic ribonucleoprotein granule; cytosol; and perinuclear region of cytoplasm. Predicted to be part of exon-exon junction complex and polysome. Predicted to be active in cytoplasm. Is expressed in several structures, including heart; liver; lung; spleen; and testis. Orthologous to human UPF2 (UPF2 regulator of nonsense mediated mRNA decay). [provided by Alliance of Genome Resources, Apr 2022]