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I6034

Sigma-Aldrich

α-L-Iduronidase human

recombinant, expressed in mouse NSO cells

Synonym(s):

IDUA

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About This Item

Enzyme Commission number:
UNSPSC Code:
12352204
NACRES:
NA.54

recombinant

expressed in mouse NSO cells

Quality Level

form

solution

specific activity

≥7,500 units/μg protein

mol wt

83 kDa

impurities

≤1.0 EU/μg Endotoxin

shipped in

wet ice

storage temp.

−20°C

Related Categories

General description

α-L-Iduronidase (IDUA) is mapped to human chromosome 4p16.3. The mature IDUA protein is glycosylated and comprises triosephosphate isomerase (TIM) barrel domain, β-sandwich, helix-loop-helix region and an immunoglobin-like domain. α-L-Iduronidase is classified under glycoside hydrolase (GH) family 39.

Application

α-L-Iduronidase may be used for leukocyte assay in the study of a-L-Iduronidase deficiency in new born.

Biochem/physiol Actions

Catalyzes the hydrolysis of unsulfated α-L-iduronosidic linkages in dermatan sulfate
In lysosomal degradation process α-L-Iduronidase plays a crucial role. It hydrolyzes the non-reducing terminal α-L-iduronic acid residues in glycosaminoglycans (GAGs), including dermatan sulfate and heparan sulfate.
Mutation in the α-L-Iduronidase is implicated in Mucopolysaccharidosis I (MPS I) . This enzyme defect leades to accumulation of dermatan and heparan sulfate . MPS I pathophysiology is accompanied with deformation of the skull, mental retardation and hernias.

Physical properties

Expressed as C-terminal histine-tagged protein (residues 1-653) with a caluclated molecular mass of 71 kDa migrating at ~83 kDa under SDS-PAGE reducing conditions.

Unit Definition

One unit will produce 1 picomole of 4-methylumbelliferone from 4-methylumbelliferyl-α-L-iduronide per minute at pH 3.5 at 25 °C.

Physical form

Supplied as a solution in 40 mM sodium acetate , 400 mM NaCl and 20% (v/v) glycerol, pH 5.0

Storage Class Code

10 - Combustible liquids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


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Xu He et al.
Nature communications, 3, 1062-1062 (2012-09-20)
Lysosomal storage diseases are a class of over 70 rare genetic diseases that are amenable to enzyme replacement therapy. Towards developing a plant-based enzyme replacement therapeutic for the lysosomal storage disease mucopolysaccharidosis I, here we expressed α-L-iduronidase in the endosperm
Mei Dai et al.
Proceedings of the National Academy of Sciences of the United States of America, 111(7), 2680-2685 (2014-02-20)
Use of megakaryocytes/platelets for transgene expression may take advantage of their rapid turnover and protective storage in platelets and reduce the risk of activating oncogenes in hematopoietic stem and progenitor cells (HSCs). Here, we show that human megakaryocytic cells could
Diagnosis of alpha-L-iduronidase deficiency in dried blood spots on filter paper: the possibility of newborn diagnosis.
N A Chamoles et al.
Clinical chemistry, 47(4), 780-781 (2001-03-29)
Dan Wang et al.
Molecular genetics and metabolism, 105(1), 116-125 (2011-11-08)
Suppression therapy utilizes compounds that suppress translation termination at in-frame premature termination codons (PTCs) to restore full-length, functional protein. This approach may provide a treatment for diseases caused by nonsense mutations such as mucopolysaccharidosis type I-Hurler (MPS I-H). MPS I-H
Min Jung Kwak et al.
BMC medical genetics, 17(1), 58-58 (2016-08-16)
Mucopolysaccharidosis I (MPS I) is an autosomal recessive lysosomal storage disorder caused by a lack of the lysosomal enzyme α-L-iduronidase (IDUA). To date, more than 200 IDUA mutations have been reported. However, only a few types of mutations are recurrent

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