X4376
Xanthine Oxidase from bovine milk
lyophilized powder, 0.4-1.0 units/mg protein
Synonym(s):
XOD, Xanthine:oxygen oxidoreductase
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All Photos(3)
About This Item
CAS Number:
Enzyme Commission number:
1.17.3.2.
EC Number:
MDL number:
UNSPSC Code:
12352204
NACRES:
NA.54
biological source
bovine milk
Quality Level
form
lyophilized powder
specific activity
0.4-1.0 units/mg protein
mol wt
283 kDa
composition
Protein, 10.0-25.0%
storage temp.
2-8°C
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General description
Formerly E.C. 1.1.3.22
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).
Biochem/physiol Actions
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.
Unit Definition
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.
Physical form
Contains 0.5% sodium salicylate.
Analysis Note
Protein determined by biuret
Signal Word
Danger
Hazard Statements
Precautionary Statements
Hazard Classifications
Resp. Sens. 1
Storage Class Code
11 - Combustible Solids
WGK
WGK 3
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Personal Protective Equipment
dust mask type N95 (US), Eyeshields, Gloves
Certificates of Analysis (COA)
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