| iduronic acid | <chemical> Component of dermatan sulfate. Differs in configuration from glucuronic acid only at the c-5 position. Chemical name: Iduronic acid (12 Dec 1998) |
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| iduronidase | <enzyme> An enzyme that hydrolyzes iduronosidic linkages in desulfated dermatan. Deficiency of this enzyme produces hurler's syndrome. Chemical name: Glycosaminoglycan alpha-L-iduronohydrolase Registry number: EC 3.2.1.76 (12 Dec 1998) |