61156
-
- 中文名稱: 尿素酶
- 英文名稱: Uricase
The enzyme is useful for the determination of uric acid in clinical analysis.
-
- 應 用: 生化診斷
- 產品類別: 酶
- 生化診斷: 比色法
規格
| Appearance | light brownish lyophilizate |
| Activity | ≧4.0 U/mg |
| Contaminants | Catalase ≦1.0 U/U% |
| Stabilizer | sucrose, citrate, ethylenediaminetetraacetic acid (EDTA) |
| Storage condition | below -20℃ |
特性
| Molecular weight | ca. 90 kDa (gel filtration) |
| Structure | 2 subunits of 35 kDa (SDS-PAGE) |
| Michaelis constant | 1.1×10-5M (uric acid) |
| pH Optimum | 8.5 |
| pH Stability | 7.0–11.0 |
| Optimum temperature | 45℃ |
| Thermal stability | below 55℃ |
| Stability (liquid form) | stable at 37℃ for at least ten days |
| Stability (powder form) | stable at 30℃ at least three weeks |
| Inhibitors | Hg2+，Ag+ |
應用
The enzyme is useful for the determination of uric acid in clinical analysis.
參考文獻
Koyama, Y. et al., J. Biochem., 120, 969–973 (1996).
