Predicted to enable ATP binding activity; protein serine kinase activity; and protein serine/threonine kinase activity. Predicted to be involved in protein phosphorylation. Predicted to be located in chromosome and nuclear speck. Predicted to be part of catalytic step 2 spliceosome. Predicted to be active in nucleus. Orthologous to human PRPF4B (pre-mRNA processing factor 4B). [provided by Alliance of Genome Resources, Apr 2022]