Predicted to enable thiol-dependent deubiquitinase and zinc ion binding activity. Predicted to be involved in spliceosomal complex assembly. Predicted to act upstream of or within RNA splicing and cell division. Predicted to be located in nucleoplasm. Predicted to be part of U4/U6 x U5 tri-snRNP complex. Is expressed in cerebral cortex; early conceptus; and genitourinary system. Orthologous to human USP39 (ubiquitin specific peptidase 39). [provided by Alliance of Genome Resources, Apr 2022]