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G8162 Sigma-Aldrich

β-Glucuronidase from Escherichia coli

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

Synonym: β-D-Glucuronide glucuronosohydrolase



General description

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.


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.

New Technical Article Comparing Performance of Different Enzymes
Learn more
about recent application data generated by Sigma R&D to optimize hydrolysis for different drug classes using enzymes from different sources and the use of a chromatographicaly purified enzyme to reduce the effect of esterase activity resulting in conversion of 6-MAM to Morphine

Effective in the hydrolysis of steroid glucuronides.

Used for the hydrolysis of glucuronide conjugates in urinary metabolite analysis


25000 units in glass bottle

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.

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.

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 6.8 (30 min assay).

Physical form

Highly purified solution in 50% glycerol

Safety & Documentation

Safety Information

GHS08  GHS08
Signal word 
Hazard statements 
Precautionary statements 
NONH for all modes of transport
WGK Germany 
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable


Certificate of Analysis (COA)

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Certificate of Origin (COO)

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Protocols & Articles


Evaluation of Different Enzymes on Hydrolysis Efficiencies of Glucuronide Drug Metabolites in Urine

β-glucuronidase (GUS) enzymes are utilized to hydrolyze glucuronide (gluc) drug metabolites to the parent drug, facilitating analysis by LC-MS/MS. Here we evaluate the hydrolysis efficiency of β-gluc...
Jim Blasberg
Harkewal Singh, Kevin Ray Sigma-Aldrich, St. Louis, MO
Keywords: High performance liquid chromatography, Liquid chromatography mass spectrometry, Mass spectrometry, Metabolites

Fermentation: Enzymes, Substrates and SCFA

The influence of probiotics on the metabolic activity of intestinal microbiota may be evaulated by detecting bacterial enzymatic activity in fecal samples, specifically β-glucosidase, β-glucuronidase...
Chloe McClanahan
Biofiles Edition 6.2
Keywords: Absorption, Cancer, Carcinogens, Cell proliferation, Chromatography, Enzyme activity, Gas chromatography, Gastrointestinal, High performance liquid chromatography, Metabolites, Prebiotics, Probiotics, Thin layer chromatography

Probiotics and Human Health

At the beginning of the 20th century, probiotics were thought to have a beneficial effect to the host by improving the intestinal microbial balance. Through his studies and observations, the Russian ...
Chloe McClanahan
BioFiles Edition 6.2
Keywords: AGE, Absorption, Adhesion, Amplification, Anaerobic, Antimicrobials, Cancer, Carcinogens, Cell proliferation, Chromatography, Coagulation, Detoxification, Diagnostic, Diseases, Enzyme activity, Fermentation, Gas chromatography, Gastrointestinal, High performance liquid chromatography, Inflammation, Magnetic resonance spectroscopy, Metabolism, Metabolites, Molecular biology, Nucleic acid hybridization, PAGE, Pharmaceutical, Phosphorylations, Polymerase chain reaction, Prebiotics, Probiotics, Reductions, Respiratory, Sequencing, Thin layer chromatography, Titrations


Enzymatic Assay of β-Glucuronidase (EC from E. coli

The scope of this procedure is all products from E. coli that have a specification for β-Glucuronidase activity.
Keywords: Enzymology

Related Content

Analytical Enzyme Beta Glucuronidase

Our β-Glucuronidases are routinely used for the enzymatic hydrolysis of glucuronides from urine1,2, plasma3,4, and other fluids5 prior to analysis by enzyme immunoassay, mass spectrometry, gas chroma...
Keywords: Bacterial conjugations, Cancer, Chromatography, Gas chromatography, High performance liquid chromatography, Immunoassay, Mass spectrometry, PAGE, Purification

Enzymes & Proteins

Committed to developing and providing breakthrough problem-solving reagents and solutions, explore our comprehensive offering of enzymes and protein reagents and kits with the confidence that you wil...
Keywords: Cell signaling, Diagnostic, Enzyme-linked immunosorbent assay, Immunohistochemistry, Metabolism, Molecular biology, Purification, Western blot

Peer-Reviewed Papers


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