Predicted to enable RNA binding activity and splicing factor binding activity. Predicted to be involved in mRNA splicing, via spliceosome. Predicted to be located in nucleoplasm. Predicted to be part of U12-type spliceosomal complex; U2 snRNP; and U2-type precatalytic spliceosome. Orthologous to human SF3B5 (splicing factor 3b subunit 5). [provided by Alliance of Genome Resources, Apr 2022]