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682151

Sigma-Aldrich

Xanthine Oxidase, Buttermilk

Native xanthine oxidase from buttermilk. Complex metalloprotein that catalyzes oxidative hydroxylation of a variety of aromatic heterocycles and simple aldehydes. Catalyzes the oxidation of xanthine to uric acid.

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Synonym(s):
Xanthine Oxidase, Buttermilk
CAS Number:
Enzyme Commission number:
MDL number:

Quality Level

form

liquid

specific activity

≥0.5 units/mg protein

manufacturer/tradename

Calbiochem®

storage condition

do not freeze

foreign activity

lactoperoxidase, none detected

shipped in

wet ice

storage temp.

2-8°C

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X1875X4500X4376
Sigma-Aldrich

682151

Xanthine Oxidase, Buttermilk

Sigma-Aldrich

X1875

Xanthine Oxidase from bovine milk

Xanthine Oxidase from bovine milk Grade III, ammonium sulfate suspension, ≥0.8 units/mg protein

X4500

Xanthine Oxidase from bovine milk

Xanthine Oxidase from bovine milk lyophilized powder, 0.4-1.0 units/mg protein

X4376

Xanthine Oxidase from bovine milk

form

liquid

form

ammonium sulfate suspension

form

ammonium sulfate suspension

form

lyophilized powder

storage condition

do not freeze

storage condition

-

storage condition

(Tightly closed. Dry. Keep locked up or in an area accessible only to qualified or authorized
persons)

storage condition

-

shipped in

wet ice

shipped in

wet ice

shipped in

-

shipped in

-

storage temp.

2-8°C

storage temp.

2-8°C

storage temp.

2-8°C

storage temp.

2-8°C

Quality Level

100

Quality Level

-

Quality Level

200

Quality Level

-

General description

Native xanthine oxidase from buttermilk. Complex metalloprotein that catalyzes oxidative hydroxylation of a variety of aromatic heterocycles and simple aldehydes. Catalyzes the oxidation of xanthine to uric acid.
Native xanthine oxidase from buttermilk. Complex metalloprotein that catalyzes oxidative hydroxylation of a variety of aromatic heterocycles and simple aldehydes. Has an optimal pH of 4.6 and a pI of 5.3-5.4. Catalyzes the oxidation of xanthine to uric acid.

Packaging

Please refer to vial label for lot-specific concentration.

Warning

Toxicity: Standard Handling (A)

Unit Definition

One unit is defined as the amount of enzyme that will convert 1.0 µmol of xanthine to uric acid per min at 25°C, pH 7.5.

Physical form

Crystalline suspension in 60% ammonium sulfate.

Other Notes

McWhirter, R.B. and Hille, R. 1991. J. Biol. Chem.266, 23724.

Legal Information

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

pictograms

Health hazard

signalword

Danger

hcodes

Hazard Classifications

Resp. Sens. 1

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3


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