Predicted to be involved in mRNA splicing, via spliceosome. Predicted to act upstream of or within positive regulation of G1/S transition of mitotic cell cycle and protein localization to nucleus. Predicted to be located in fibrillar center; nuclear membrane; and nuclear speck. Predicted to be part of Cul4-RING E3 ubiquitin ligase complex; Prp19 complex; and U2-type catalytic step 2 spliceosome. Orthologous to human PLRG1 (pleiotropic regulator 1). [provided by Alliance of Genome Resources, Apr 2022]