arylsulfatase b and arylsulfatase bm had equal activity toward methyl-umbelliferyl sulfate , nitrocatechol sulfate and a physiological substrate udp-n-acetylgalactosamine 4-sulfate , but both forms were inactive toward the arylsulfatase a substrates cerebroside sulfate and ascorbic acid 2-sulfate .
C0003940
arylsulfatase
C0007804
arylsulfatase a