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Merck
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I6034

Sigma-Aldrich

α- L -艾杜糖醛酸酶 人

recombinant, expressed in mouse NSO cells

同義詞:

IDUA

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About This Item

酶委員會編號:
分類程式碼代碼:
12352204
NACRES:
NA.54

重組細胞

expressed in mouse NSO cells

品質等級

形狀

solution

比活性

≥7,500 units/μg protein

分子量

83 kDa

雜質

≤1.0 EU/μg Endotoxin

運輸包裝

wet ice

儲存溫度

−20°C

一般說明

α-L-艾杜糖苷酸酶 (IDUA) 定位于人染色体4p16.3。成熟的IDUA蛋白被糖基化,并包含三糖磷酸异构酶(TIM)桶状结构域、β夹心式螺旋-环-螺旋区域和免疫球蛋白样结构域。α-L-艾杜糖苷酸酶被归类为糖苷水解酶(GH)家族39。

應用

α-L-艾杜糖醛酸酶可用于新生儿 a-L-艾杜糖醛酸酶缺乏症的白细胞测定。

生化/生理作用

α-L-艾杜糖苷酸酶突变与粘多糖贮积病I型(MPS I)有关。该酶的缺陷导致皮肤素和硫酸乙酰肝素的积累。MPS I的病理生理学伴随着颅骨变形、智力低下和疝气。
在溶酶体降解过程中,α-L-艾杜糖苷酸酶(Iduronidase )起着至关重要的作用。它水解糖胺聚糖(GAG)(包括硫酸皮肤素和硫酸乙酰肝素) 中非还原末端的α L-艾杜糖醛酸残基。
催化硫酸皮肤素中未硫酸化的 L -艾杜糖苷键的水解

物理性質

在 SDS-PAGE 还原条件下,表达为 C-末端组氨酸标记蛋白(残基 1-653),其含钙核分子量为 71 kDa,在约 83 kDa 处迁移。

單位定義

一个单元将在-25°C pH 3.5 下每分钟从 4-甲基伞形酮-α-L-艾杜糖苷酸生成 1 皮摩尔的 4-甲基伞形酮。

外觀

40 mM 醋酸钠、400 mM NaCl 和 20% (v/v) 甘油溶液 (pH 5.0)

儲存類別代碼

10 - Combustible liquids

水污染物質分類(WGK)

WGK 1

閃點(°F)

Not applicable

閃點(°C)

Not applicable


分析證明 (COA)

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Vassili Valayannopoulos et al.
Rheumatology (Oxford, England), 50 Suppl 5, v49-v59 (2012-01-11)
Better understanding of disease pathophysiology, improved supportive care and availability of disease-specific treatments for some of the mucopolysaccharidosis (MPS) disorders have greatly improved the outlook for patients with MPS disorders. Optimal management of these multisystemic disorders involves a multidisciplinary team
Human kidney alpha-L-iduronidase: purification and characterization.
L H Rome et al.
Archives of biochemistry and biophysics, 189(2), 344-353 (1978-08-01)
Francesca Gatto et al.
Stem cells and development, 21(9), 1466-1477 (2012-01-28)
Mucopolysaccharidosis type I (MPS IH; Hurler syndrome) is a rare genetic disorder that is caused by mutations in the α-L-iduronidase (IDUA) gene, resulting in the deficiency of IDUA enzyme activity and intra-cellular accumulation of glycosaminoglycans. A characteristic skeletal phenotype is
Haiying Bie et al.
Nature chemical biology, 9(11), 739-745 (2013-09-17)
Mucopolysaccharidosis type I (MPS I), caused by mutations in the gene encoding α-L-iduronidase (IDUA), is one of approximately 70 genetic disorders collectively known as the lysosomal storage diseases. To gain insight into the basis for MPS I, we crystallized human
Patricia I Dickson et al.
Molecular genetics and metabolism, 106(1), 68-72 (2012-03-10)
Intrathecal enzyme replacement therapy is an experimental option to treat central nervous system disease due to lysosomal storage. Previous work shows that MPS I dogs receiving enzyme replacement with recombinant human alpha-l-iduronidase into the cisterna magna showed normal brain glycosaminoglycan

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