Predicted to enable mRNA binding activity. Predicted to act upstream of or within mRNA 3'-end processing. Predicted to be located in nucleus. Predicted to be part of mRNA cleavage and polyadenylation specificity factor complex. Human ortholog(s) of this gene implicated in non-syndromic X-linked intellectual disability. Orthologous to several human genes including CSTF2 (cleavage stimulation factor subunit 2).