Enables polynucleotide 5'-phosphatase activity. Involved in polynucleotide 5' dephosphorylation and positive regulation of gene expression. Located in nucleus. Expressed in tail. Is an ortholog of human RNGTT (RNA guanylyltransferase and 5'-phosphatase).
Predicted to be involved in signal transduction. Is an ortholog of human TCP11 (t-complex 11); TCP11L1 (t-complex 11 like 1); and TCP11L2 (t-complex 11 like 2).