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X4875

Sigma-Aldrich

Xanthinoxidase aus Kuhmilch

Grade IV, ammonium sulfate suspension, ≥0.1 units/mg protein

Synonym(e):

XOD, Xanthine:oxygen oxidoreductase

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10 UNITS
CHF 86.00
40 UNITS
CHF 218.00
120 UNITS
CHF 527.00

CHF 86.00

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10 UNITS
CHF 86.00
40 UNITS
CHF 218.00
120 UNITS
CHF 527.00

About This Item

CAS-Nummer:
9002-17-9
EC-Nummer:
1.17.3.2.
EG-Nummer:
232-657-6
MDL-Nummer:
MFCD00082145
UNSPSC-Code:
12352204
NACRES:
NA.54

CHF 86.00

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Biologische Quelle

bovine milk

Typ

Grade IV

Form

ammonium sulfate suspension

Spezifische Aktivität

≥0.1 units/mg protein

Lagertemp.

2-8°C

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Allgemeine Beschreibung

Frühere EG-Nummer 1.1.3.22
Research area: Cell CycleXanthineoxidase (XO) is a homodimer. It is made up of two sub-units each made up of onemolybdenum and two iron-sulphur (2Fe-2S) centers.[1]

Anwendung

Xanthine Oxidase from bovine milk has been used in superoxide dismutaseactivity assay.[2][3]Xanthine oxidase may be suitable for producing amperometric biosensors and designing-flavonoid-type inhibitors against XO for treating inflammatory diseases, gout, and hyperuricemia. It may also be used in the synthesis of superoxide because of aldehyde oxidation.

Biochem./physiol. Wirkung

Xanthinoxidase ist ein molybdänhaltiges Enzym, das im Zytosol vorkommt und durch Flavonoide stark gehemmt werden kann. Es spielt eine wesentliche Rolle beim Metabolismus einiger Arzneimittel sowie von Purinen und Pyrimidinen. Es ist auch eine biologische Quelle für reaktive Sauerstoffspezies.
Although xanthine oxidase is found widely distributed in multiple tissues, it is highly expressed in endothelial and epithelial cells. Its expression was also increased in infected tissues where it was shown to have an anti-microbial effect due to its ability to generate reactive oxygen species. [4]Xanthineoxidase plays an important role in catalyzing the hydroxylation ofhypoxanthine to Xanthine. Later, xanthine is converted to uric acid isexcreted by the kidneys.[1]

Einheitendefinition

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.

Physikalische Form

Suspension in 2.3 M (NH4)2SO4 containing 1 mM sodium salicylate

Hinweis zur Analyse

Protein determined by biuret

Piktogramme

Health hazard
GHS08

Signalwort

Danger

H-Sätze

H334

Gefahreneinstufungen

Resp. Sens. 1

Lagerklassenschlüssel

10 - Combustible liquids

WGK

WGK 3

Flammpunkt (°F)

Not applicable

Flammpunkt (°C)

Not applicable

Persönliche Schutzausrüstung

Eyeshields, Gloves, type N95 (US)

Hier finden Sie alle aktuellen Versionen:

Analysenzertifikate (COA)

Lot/Batch Number
0000299810
0000299810
0000292863
0000292865
0000292864

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Die Dokumentenbibliothek aufrufen

M B Betancor et al.
Fish physiology and biochemistry, 41(3), 705-720 (2015-03-10)
In vertebrates, selenium (Se) is an essential micronutrient for vertebrates that is involved in antioxidant protection and thyroid hormone regulation among other roles and functions through its incorporation into proteins, the selenoproteins. Long-chain polyunsaturated fatty acids, such as docosahexaenoic acid
Xanthine oxidase: isolation, assays of activity, and inhibition
Kostic D, et al.
Journal of Chemistry, 2015(1), 294858-294858 (2015)
Szymon Byczkiewicz et al.
Nutrients, 16(11) (2024-06-19)
In the present study, the effect of the addition of quince and collagen type I and III to dessert chocolate on its functional properties was determined. The study evaluated the antioxidant potential of the tested formulations using the FRAP method
Role of xanthine oxidoreductase as an antimicrobial agent.
Hannah M Martin et al.
Infection and immunity, 72(9), 4933-4939 (2004-08-24)
Evolution of the anticholinesterase, antioxidant, and anti-inflammatory activity of Epilobium angustifolium L. infusion during in vitro digestion
Szwajgier D, et al.
Journal of functional foods, 85, 104645-104645 (2021)
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Artikel

How to Work with Enzymes Supplied as Ammonium Sulfate Suspensions

Instructions for working with enzymes supplied as ammonium sulfate suspensions

Questions

  1. Hello, Is there a way to find out how much 2.3M (NH4)2SO4 was used to suspend 10 Units of Xanthine Oxidase? Specifically, what is the ratio of units Xanthine Oxidase (or mg) to volume needed to create this suspension using lyophilized powder? Thank you!

    1 answer

    1. The volume of a given package size varies from lot to lot. The minimum activity of this product is 0.1 units per milligram of protein. The minimum protein concentration is 5.0 mg/mL. As an example, a lot reporting an activity of 0.3 units per milligram protein at a concentration of 13.8 mg protein per milliliter, will have a volume of 2.3 mL for the 10 Unit package size. This is determined by using the following calculation:
      10U / (0.3U/mg) = 30mg / (13.8mg/ml) = 2.3 ml volume

      The lot-specific volume may be determined by data provided in the Certificate of Analysis. Please see the link below to review a sample or lot-specific Certificate:
      https://www.sigmaaldrich.com/product/sigma/x4875#product-documentation

      Helpful?

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