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X4376

Sigma-Aldrich

Xanthine Oxidase from bovine milk

lyophilized powder, 0.4-1.0 units/mg protein

Synonyme(s) :

XOD, Xanthine:oxygen oxidoreductase

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About This Item

Numéro CAS:
9002-17-9
Numéro de classification (Commission des enzymes):
1.17.3.2.
Numéro CE :
232-657-6
Numéro MDL:
MFCD00082145
Code UNSPSC :
12352204
Nomenclature NACRES :
NA.54

Source biologique

bovine milk

Forme

lyophilized powder

Activité spécifique

0.4-1.0 units/mg protein

Poids mol.

283 kDa

Composition

Protein, 10.0-25.0%

Température de stockage

2-8°C

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Description générale

enthält auch proteolytische Aktivität

Application

Xanthine Oxidase from bovine milk has been used as a source for superoxide generation. It has also been used as a model enzyme in the internally calibrated electrochemical continuous enzyme assay (ICECEA).

Actions biochimiques/physiologiques

The isoflavanoid genistein was shown to inhibit xanthine oxidase at concentrations between 0.1-4.0 μM and then activate xanthine oxidase at concentrations higher than 5 μM.
Xanthine Oxidase acts as a potential biomarker for oxidative stress. It is also implicated in tissue and vascular injuries such as liver damage, inflammatory diseases and chronic heart failure.
Xanthine oxidase is a molybdenum-containing enzyme that is found in the cytosol, and may be strongly inhibited by flavonoids. It plays a vital role in the metabolism of some drugs, as well as purines and pyrimidines. It is also known to be a biological source of reactive oxygen species.

Définition de l'unité

One unit will convert 1.0 μmole of xanthine to uric acid per min at pH 7.5 at 25 °C. Approx. 50% of the activity is obtained with hypoxanthine as substrate.

Forme physique

Contains 0.5% sodium salicylate.

Remarque sur l'analyse

Protein determined by biuret

Pictogrammes

Health hazard
GHS08

Mention d'avertissement

Danger

Mentions de danger

H334

Conseils de prudence

P261 - P284 - P501

Classification des risques

Resp. Sens. 1

Code de la classe de stockage

11 - Combustible Solids

Classe de danger pour l'eau (WGK)

WGK 3

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable

Équipement de protection individuelle

Eyeshields, Gloves, type N95 (US)

Certificats d'analyse (COA)

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Genistein effect on xanthine oxidase activity.
Sumbayev VV.
Food And Chemical Toxicology, 73, 39-43 (2001)
Resistance of postharvest biocontrol yeasts to oxidative stress: a possible new mechanism of action
Castoria R, et al.
Phytopathology, 93(5), 564-572 (2003)
Kathrin S Zeller et al.
PloS one, 8(5), e64897-e64897 (2013-06-06)
Cells are exposed to several types of integrin stimuli, which generate responses generally referred to as "integrin signals", but the specific responses to different integrin stimuli are poorly defined. In this study, signals induced by integrin ligation during cell attachment
Massimiliano Magro et al.
Materials (Basel, Switzerland), 13(7) (2020-04-16)
Generally, enzyme immobilization on nanoparticles leads to nano-conjugates presenting partially preserved, or even absent, biological properties. Notwithstanding, recent research demonstrated that the coupling to nanomaterials can improve the activity of immobilized enzymes. Herein, xanthine oxidase (XO) was immobilized by self-assembly
Rapid electrochemical enzyme assay with enzyme-free calibration
Zhang M, et al.
Analytical Chemistry, 85(12), 6026-6032 (2013)
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