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Comparative activity of arylsulphatases A and B on two synthetic substrates.


ABSTRACT: Rat liver and human skin fibroblasts arylsulphatase A and B activities on both 4-methylumbelliferyl sulphate and 4-nitrocatechol sulphate were compared. The intracellular distribution of activity differed markedly when 4-methylumbelliferyl sulphate was used from that observed with 4-nitrocatechol sulphate. No discrimination between control and metachromatic leucodystrophy or mucopolysaccharidosis (type VI) could be achieved when 4-methylumbelliferyl sulphate was used as substrate. These results contrast sharply with those obtained with 4-nitrocatechol sulphate and cast doubt on the validity of 4-methylumbelliferyl sulphate as substrate for the determination of arylsulphatase A and B activities.

SUBMITTER: Delvin EE 

PROVIDER: S-EPMC1163860 | biostudies-other | 1976 Aug

REPOSITORIES: biostudies-other

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