Predicted to enable cysteine-type endopeptidase activity and thiol-dependent deubiquitinase. Predicted to be involved in cell migration and protein deubiquitination. Predicted to be active in cytosol and nucleus. Is expressed in brain; lung; and testis. Human ortholog(s) of this gene implicated in Y-linked spermatogenic failure 2. Orthologous to human USP9Y (ubiquitin specific peptidase 9 Y-linked). [provided by Alliance of Genome Resources, Apr 2022]