Predicted to enable adenosine receptor binding activity; identical protein binding activity; and thiol-dependent deubiquitinase. Predicted to be involved in several processes, including negative regulation of protein ubiquitination; protein localization to cell surface; and spliceosomal tri-snRNP complex assembly. Predicted to be located in cytosol and plasma membrane. Predicted to be active in nucleus. Orthologous to human USP4 (ubiquitin specific peptidase 4). [provided by Alliance of Genome Resources, Apr 2022]