Predicted to enable exon-exon junction complex binding activity; mRNA binding activity; and ribosomal large subunit binding activity. Predicted to contribute to RNA binding activity. Predicted to be involved in several processes, including mRNA alternative polyadenylation; pre-mRNA cleavage required for polyadenylation; and protein-containing complex assembly. Located in nucleus. Is expressed in several structures, including brain and retina nuclear layer. Orthologous to human CPSF6 (cleavage and polyadenylation specific factor 6). [provided by Alliance of Genome Resources, Apr 2022]