MilliporeSigma
All Photos(1)

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.

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

Compare Similar Items

View Full Comparison

Show Differences

1 of 4

This Item
X4500X1875X4875
specific activity

≥0.5 units/mg protein

specific activity

≥0.8 units/mg protein

specific activity

≥0.4 units/mg protein

specific activity

≥0.1 units/mg protein

manufacturer/tradename

Calbiochem®

manufacturer/tradename

-

manufacturer/tradename

-

manufacturer/tradename

-

storage condition

do not freeze

storage condition

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

storage condition

-

storage condition

-

foreign activity

lactoperoxidase, none detected

foreign activity

uricase ≤0.1%

foreign activity

uricase ≤0.5%

foreign activity

-

shipped in

wet ice

shipped in

-

shipped in

wet ice

shipped in

-

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

Signal Word

Danger

Hazard Statements

Hazard Classifications

Resp. Sens. 1

Storage Class Code

11 - Combustible Solids

WGK

WGK 3


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Documents related to the products that you have purchased in the past have been gathered in the Document Library for your convenience.

Visit the Document Library

Difficulty Finding Your Product Or Lot/Batch Number?

Product numbers are combined with Pack Sizes/Quantity when displayed on the website (example: T1503-25G). Please make sure you enter ONLY the product number in the Product Number field (Example: T1503).

Example:

T1503
Product Number
-
25G
Pack Size/Quantity

Additional examples:

705578-5MG-PW

PL860-CGA/SHF-1EA

MMYOMAG-74K-13

1000309185

enter as 1.000309185)

Having trouble? Feel free to contact Technical Service for assistance.

Lot and Batch Numbers can be found on a product's label following the words 'Lot' or 'Batch'.

Aldrich Products

  • For a lot number such as TO09019TO, enter it as 09019TO (without the first two letters 'TO').

  • For a lot number with a filling-code such as 05427ES-021, enter it as 05427ES (without the filling-code '-021').

  • For a lot number with a filling-code such as STBB0728K9, enter it as STBB0728 without the filling-code 'K9'.

Not Finding What You Are Looking For?

In some cases, a COA may not be available online. If your search was unable to find the COA you can request one.

Request COA

Customers Also Viewed

Slide 1 of 10

1 of 10

Articles

Synthesis of Melting Gels Using Mono-Substituted and Di-Substituted Alkoxysiloxanes

Synthesis of Melting Gels Using Mono-Substituted and Di-Substituted Alkoxysiloxanes

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service