Predicted to enable RNA binding activity and proline-rich region binding activity. Predicted to be involved in several processes, including mRNA splicing, via spliceosome; regulation of cell shape; and regulation of cytokinesis. Predicted to be located in nuclear matrix and nuclear speck. Predicted to be part of U1 snRNP and U2-type prespliceosome. Orthologous to human PRPF40A (pre-mRNA processing factor 40 homolog A). [provided by Alliance of Genome Resources, Apr 2022]