ID 3.1.6.12 DE N-acetylgalactosamine-4-sulfatase. AN arylsulfatase B. AN chondroitinase. AN chondroitinsulfatase. CA Hydrolysis of the 4-sulfate groups of the N-acetyl-D-galactosamine CA 4-sulfate units of chondroitin sulfate and dermatan sulfate. CC -!- Also acts on N-acetylglucosamine 4-sulfate. DR P33727, ARSB_FELCA ; P15848, ARSB_HUMAN ; P50429, ARSB_MOUSE ; DR P50430, ARSB_RAT ; //