Predicted to enable guanylyltransferase activity and polynucleotide adenylyltransferase activity. Predicted to be involved in several processes, including RNA metabolic process; negative regulation of telomere maintenance via telomerase; and regulation of mRNA stability. Predicted to act upstream of or within cell division; mRNA processing; and rRNA processing. Predicted to be located in cytoplasm. Predicted to be part of TRAMP complex. Predicted to be active in nucleolus. Orthologous to human TENT4B (terminal nucleotidyltransferase 4B). [provided by Alliance of Genome Resources, Apr 2022]