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Xanthine oxidase from buttermilk min. 0.9 U/mg protein
suspension
(XOD, Xanthine:oxygen oxidoreductase)
EC 1.1.3.22 • Mr ca. 283 000 •
EC 1.1.3.22 • Mr ca. 283 000 •
For the determination of xanthine and hypoxanthine (1), adenosine, guanosine (2) and total purines (3). Chromatographically purified; ca. 10 mg/ml in 60 % saturated ammonium sulfate containing sodium salicylate and EDTA.
5 mg correspond to approx. 0.5 ml, 25 mg correspond to approx. 2.5 ml.
Unit definition: 1 U catalyzes the oxidation of 1 µmole xanthine per minute at 25 °C, pH 7.5, measured by the increase in absorbance in 290 nm (4).
References:
- Jensen, M.H. & Joergensen, S. (1985) Methods of Enzymatic Analysis (Bergmeyer, H.U., ed.) 3rd Ed. Vol. 7, p. 125-33
- Heinz, F. & Reckel, S. (1985) loc. cit. p. 92-100
- Jensen, M.H. (1985) loc. cit. p. 101-10
- Kalckar, H.M. (1947) J. Biol. Chem. 167, 429-43
XN
Harmful
R: 42
S: 23D - 36 - 45
HS: 35079090
Storage Temperature: +2 °C to +8 °C
| Cat.No. | Size | EUR |  |
|---|---|---|---|
| 38418.01 | 5 mg | inquire* | |
| 38418.02 | 25 mg | inquire* | |
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