Enables N-sulfoglucosamine-3-sulfatase activity and arylsulfatase activity. Predicted to be involved in sulfur compound metabolic process. Located in lysosome. Is expressed in central nervous system and retina. Used to study mucopolysaccharidosis. Human ortholog(s) of this gene implicated in Usher syndrome. Orthologous to human ARSG (arylsulfatase G). [provided by Alliance of Genome Resources, Apr 2022]