G8162

ββ-Glucuronidase from Escherichia coli

aqueous glycerol solution, ≥5,000,000 units/g protein, pH 6.8 (biuret)

• Synonyme(s) : ββ-D-Glucuronide glucuronosohydrolase
• Numéro CAS: 9001-45-0
• Numéro de classification (Commission des enzymes): 3.2.1.31 (BRENDA, IUBMB)
• Numéro MDL: MFCD00130629
• Code UNSPSC : 12352204
• Nomenclature NACRES : NA.54

Propriétés

• Source biologique: Escherichia coli
• Forme: aqueous glycerol solution
• Activité spécifique: ≥5,000,000 units/g protein, pH 6.8 (biuret)
• Poids mol.: 69-71 kDa
• Conditions d'expédition: wet ice
• Température de stockage: −20°C

Description

Description générale

β-Glucuronidase from Escherichia coli is similar to human glucuronidase enzyme and corresponds to molecular weight close to 69-71 kDa and has an pH optimum of 6.5-7.5. It belongs to family-2 glycosyl hydrolase and has active site residues glutamic acid 394, tyrosine 468 and glutamic acid 504.

Application

β-Glucuronidase from Escherichia coli has been used in the enzymatic cleavage and activation of glucuronide prodrugs in non-small cell lung cancer cells, U87 human glioblastoma cell line, in A549 (human lung adenocarcinoma) and KB (human oral squamous carcinoma).

β-Glucuronidase from E. coli is used for the enzymatic hydrolysis of b-glucuronides in urine and other fluids. It has a high rate of hydrolytic activity and may be useful for determining the presence of androsterone, 17-hydroxycorticosteroids, and estriol in urine.
The optimal conditions for the enzymatic hydrolysis of α-hydroxytriazolam, one of the major metabolites of triazolam in human urine, were determined using β-glucuronidase Type IX-A.
It is used as a reporter gene in GUS assays to monitor gene expression.

Nouvel article technique comparant les performances de différentes enzymes
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sur les données d′applications récentes générées par la R&D Sigma pour optimiser l′hydrolyse de différentes classes de médicaments à l′aide d′enzymes provenant de diverses sources et sur l′utilisation d′une enzyme purifiée par chromatographie pour réduire l′effet de l′activité estérase entraînant la conversion de 6-MAM en morphine

Efficace dans l′hydrolyse des glucuronides stéroïdes.

Sert à hydrolyser les conjugués glucuronides lors de l′analyse de métabolites urinaires

Actions biochimiques/physiologiques

β-Glucuronidase catalyzes the hydrolysis of β-glucuronic acid residues from the non-reducing termini of glycosaminoglycans (GAGs). β-Glucuronidase is a potential candidate enzyme for gene-mediated enzyme prodrug therapy for glucuronide prodrugs. Use of β-Glucuronidase-albumin complex based drug delivery could be an effective therapeutic methodology for treating solid tumors.

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.

Définition de l'unité

One Sigma or modified Fishman unit will liberate 1.0 μg of phenolphthalein from phenolphthalein glucuronide per hr at 37 °C at the pH 6.8 (30 min assay).

Forme physique

Highly purified solution in 50% glycerol

Informations sur la sécurité

• Pictogrammes: GHS08
• Mention d'avertissement: Danger
• Mentions de danger: H317,H334
• Conseils de prudence: P261 - P280 - P342 + P311
• Classification des risques: Resp. Sens. 1 - Skin Sens. 1
• Code de la classe de stockage: 10 - Combustible liquids
• Classe de danger pour l'eau (WGK): WGK 3
• Point d'éclair (°F): Not applicable
• Point d'éclair (°C): Not applicable