Predicted to enable polynucleotide adenylyltransferase activity. Predicted to be involved in mRNA polyadenylation. Predicted to act upstream of or within RNA polyadenylation. Located in endoplasmic reticulum and nucleus. Is expressed in ductus deferens; epididymis; skin; and testis. Orthologous to human PAPOLB (poly(A) polymerase beta). [provided by Alliance of Genome Resources, Apr 2022]