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G4259

Sigma-Aldrich

β-Glucuronidase from Helix aspersa (garden snail)

Type HA-4

Přihlásitk zobrazení cen stanovených pro organizaci a smluvních cen
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About This Item

Číslo enzymu podle klasifikace EK:
3.2.1.31 (BRENDA, IUBMB)
EC Number:
232-606-8
MDL number:
MFCD00130629
UNSPSC Code:
12352204
NACRES:
NA.54

type

Type HA-4

form

partially purified powder

specific activity

≥300,000 units/g solid solid

secondary activity

≤7,500 units/g solid sulfatase

solubility

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

application(s)

clinical testing

storage temp.

−20°C

Související kategorie

Application

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.

Biochem/physiol Actions

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.

Unit Definition

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.

Other Notes

Used for the hydrolysis of glucuronide conjugates in urinary metabolite analysis

substrate

Č. produktu
Popis
Stanovení ceny

pictograms

Health hazard
GHS08

signalword

Danger

hcodes

H317,H334

Hazard Classifications

Resp. Sens. 1 - Skin Sens. 1

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

Osvědčení o analýze (COA)

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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)
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
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
Catalytic mechanisms of enymatic glycosyl transfer
M.L. Sinnott
Chemical Reviews, 90, 1171-1202 (1990)
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
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Protokoly

ß-Glucuronidase Enzymatic Assay

Enzymatic assay protocol for β-Glucuronidase from Helix Pomatia and Bovine Liver aids laboratory personnel in following procedures.

UHPLC/MS for Drug Detection in Urine

Optimize β-glucuronidase hydrolysis for glucuronide metabolite analysis considering factors like time, temperature, pH, and enzyme concentration.

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