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A group of enzymes that will hydrolyse sulphate esters of aromatic substrates. Aryl sulphatase A (EC, 507 aa) is a lysosomal enzyme that hydrolyses cerebroside 3-sulphate and is deficient in metachromatic leucodystrophy. Aryl sulphatase B (N-acetylgalactosamine 4-sulphatase, EC, 533 aa) is involved in lysosomal hydrolysis of glycosaminoglycans and is deficient in Maroteaux–Lamy syndrome. Aryl sulphatase C (steroid sulphatase, EC, 583 aa) hydrolyses several precursors for oestrogens, androgens, and cholesterol. Mutations in the gene causes X-linked ichthyosis. X-linked recessive chondrodysplasia punctata is caused by mutation in aryl sulphatase E (ARSE, 594 aa), the gene for which is located near those for arylsulphatases D and F. See multiple sulphatase deficiency.

Subjects: Medicine and Health — Chemistry.

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