Predicted to enable cysteine-type deubiquitinase activity. Predicted to be involved in DNA damage response, signal transduction by p53 class mediator; regulation of autophagy; and regulation of protein stability. Predicted to act upstream of or within protein deubiquitination and proteolysis. Predicted to be active in cytosol and nucleus. Is expressed in immature eye and optic tectum. Orthologous to human USP10 (ubiquitin specific peptidase 10).