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biological source
microbial
form
lyophilized powder
specific activity
≥7 units/mg solid
mol wt
~160 kDa
storage condition
(Tightly closed. Dry. Keep locked up or in an area accessible only to qualified or authorized
persons)
technique(s)
inhibition assay: suitable
color
brown
optimum pH
7.5-8.0
shipped in
wet ice
storage temp.
−20°C
Gene Information
Escherichia coli K12 ... xdhA(947116) , xdhB(947205) , xdhC(945148)
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This Item | X4376 | X4500 | X4875 |
|---|---|---|---|
| form lyophilized powder | form lyophilized powder | form ammonium sulfate suspension | form ammonium sulfate suspension |
| specific activity ≥7 units/mg solid | specific activity 0.4-1.0 units/mg protein | specific activity ≥0.8 units/mg protein | specific activity ≥0.1 units/mg protein |
| mol wt ~160 kDa | mol wt 283 kDa | mol wt - | mol wt - |
| storage condition (Tightly closed. Dry. Keep locked up or in an area accessible only to qualified or authorized | storage condition - | storage condition (Tightly closed. Dry. Keep locked up or in an area accessible only to qualified or authorized | storage condition - |
| technique(s) inhibition assay: suitable | technique(s) - | technique(s) inhibition assay: suitable | technique(s) - |
General description
Xanthine Oxidase (XO), a versatile molybdoflavoprotein, is one of the forms of xanthine oxidoreductases (XORs). XO is characterized with two flavin molecules (FAD), two molybdenum atoms, and eight iron atoms bound per enzymatic unit.
Application
- to determine in vitro xanthine oxidase activity
- as a source to generate superoxide anions during superoxide dismutase assay
- as a component of the reagent mix in colorimetric paper-based device to detect allopurinol in traditional medicine by enzymatic reaction
Biochem/physiol Actions
Physical properties
Optimum pH: 7.5 - 8.0
Optimum temperature: 65oC
pH Stability: pH 6.5 - 9.0 (25oC, 15hr)
Thermal stability: below 55oC (pH 8.0, 30min)
Unit Definition
Physical form
antibody
inhibitor
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
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Protocols
The appearance of uric acid is measured at 293nm by spectrophotometry.
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