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Merck

G4259

Sigma-Aldrich

β-葡萄糖醛酸酶 来源于散大蜗牛 (花园蜗牛)

Type HA-4

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About This Item

EC號碼:
MDL號碼:
分類程式碼代碼:
12352204
NACRES:
NA.54

種類

Type HA-4

品質等級

形狀

partially purified powder

比活性

≥300,000 units/g solid solid

secondary activity

≤7,500 units/g solid sulfatase

溶解度

H2O: soluble 1.90-2.10 mg/mL, clear to slightly hazy

應用

clinical testing

儲存溫度

−20°C

應用

β-glucuronidase was used in enzymic hydrolysis of tissue homogenates for liquid chromatography-electrospray ion trap mass spectrometry (LC/MSn) analysis, to study the structures of degradation products of baicalin.

生化/生理作用

β-glucuronidase (β-GIc) is an exoglycosidase that catalyzes the breakdown of complex carbohydrates. In humans it converts conjugated bilirubin into the unconjugated form, making bilirubin suitable for reabsorption.

單位定義

One Sigma or modified Fishman unit will liberate 1.0 μg of phenolphthalein from phenolphthalein glucuronide per hr at 37°C at the pH 5.0 (30 min assay).
One unit of sulfatase will hydrolyze 1.0 μmole p-nitrocatechol sulfate per hr at pH 5.0 at 37 °C.

其他說明

在尿液代谢物分析中用于 葡萄糖苷酸缀合物的水解

象形圖

Health hazard

訊號詞

Danger

危險聲明

危險分類

Resp. Sens. 1 - Skin Sens. 1

儲存類別代碼

11 - Combustible Solids

水污染物質分類(WGK)

WGK 3

閃點(°F)

Not applicable

閃點(°C)

Not applicable

個人防護裝備

Eyeshields, Gloves, type N95 (US)


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Vectors with the gus reporter gene for identifying and quantitating promoter regions in <I>Saccharomyces cerevisiae</I>
Marathe &amp; J.E. McEwen
Gene, 154, 105-107 (1988)
Catalytic mechanisms of enymatic glycosyl transfer
M.L. Sinnott
Chemical Reviews, 90, 1171-1202 (1990)
J D McCarter et al.
Current opinion in structural biology, 4(6), 885-892 (1994-12-01)
The determination of a large number of three-dimensional structures of glycosidases, both free and in complex with ligands, has provided valuable new insights into glycosidase catalysis, especially when coupled with results from studies of specifically labelled glycosidases and kinetic analyses
S Jain et al.
Nature structural biology, 3(4), 375-381 (1996-04-01)
The X-ray structure of the homotetrameric lysosomal acid hydrolase, human beta-glucuronidase (332,000 Mr), has been determined at 2.6 A resolution. The tetramer has approximate dihedral symmetry and each promoter consists of three structural domains with topologies similar to a jelly
Jie Xing et al.
Journal of pharmaceutical and biomedical analysis, 39(3-4), 593-600 (2005-05-17)
The stability of baicalin in buffered aqueous solutions at different pHs and in biological fluids, including plasma, urine and tissue homogenates, were investigated in vitro. Structures of the degradation products of baicalin were elucidated by liquid chromatography-electrospray ion trap mass

实验方案

Enzymatic Assay of ß-Glucuronidase (EC 3.2.1.31) from Helix Pomatia and Bovine Liver. This procedure applies to all b-Glucuronidase products that are derived from Helix Pomatia and Bovine Liver. It is the responsibility of trained Analytical Services laboratory personnel to follow this procedure as written.

Enzymatic Assay of ß-Glucuronidase (EC 3.2.1.31) from Helix Pomatia and Bovine Liver. This procedure applies to all b-Glucuronidase products that are derived from Helix Pomatia and Bovine Liver. It is the responsibility of trained Analytical Services laboratory personnel to follow this procedure as written.

To optimize hydrolysis using β-glucuronidase, factors such as incubation time, temperature, hydrolysis pH, enzyme source, and enzyme concentration must be evaluated for each glucuronide metabolite to be analyzed.

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