Enables polynucleotide adenylyltransferase activity. Acts upstream of or within RNA polyadenylation. Predicted to be located in nucleoplasm. Predicted to be active in nucleus. Is expressed in several structures, including alimentary system; genitourinary system; nervous system; respiratory system; and sensory organ. Orthologous to human PAPOLA (poly(A) polymerase alpha). [provided by Alliance of Genome Resources, Apr 2022]