计算溶液所需的质量、体积或浓度。
ActiBioPure™,EnzymoPure™,生物活性,重组,高性能 级 ,适用于对基线干扰要求严格的色谱和分析工作流程。
避光,-20°C储存,干燥,避免反复冻融。超低温运输 。请查阅批次 COA 获取详细规格。
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在色谱分析、有机合成和交叉偶联反应领域已被 0 篇同行评审文献引用。
Phosphoglucose isomerase (GPI) is a highly conserved glycolytic and dimeric enzyme. Phosphoglucose isomerase (GPI) catalyzes the reversible isomerization of glucose-6-phosphate to fructose-6-phosphate.
Appearance: White amorphous powder, lyophilized
Specific activity: More than 250 U/mg solid
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This enzyme is useful for enzymatic determination of F–6–P.

The assay is based on the increase in absorbance at 340 nm as the formation of NADPH proceeds in the following reactions:

One unit is defined as the amount of enzyme which converts 1 μmole of fructose–6–phosphate to D–Glucose–6–phosphate per minute at 37℃ under the conditions specified in the assay procedure.
1. Reaction mixture (10test)
0.1M Tris-HCl Buffer pH9.0 28.44 ml
0.1M Fructose-6-P solution 0.90 ml
22.5mM NADP solution 0.60 ml
700U/ml G6PDH suspension 0.06 ml
※ Use G6PDH 10mg/2ml (700U/ml) : market product
2. Enzyme dilution buffer
50mM Tris–HCl buffer pH8.5
Enzyme solution
Accurately weigh about 10 mg of the sample and add enzyme dilution buffer to make a total of 10 ml. Dilute it with enzyme dilution buffer to adjust the concentration to 5.0–10.0 U/ml.
Procedure
1. Pipette accurately 3.0 ml of reaction mixture into a small test tube and preincubate at 30℃.
2. After 5 min add accurately 10 μl of enzyme solution and mix to start the reaction at 30℃.
※ In the case of a test blank, add 10 μl of enzyme dilution buffer in place of enzyme solution.
3. After starting the reaction, measure the rate of increase per minutes in absorbance at 340 nm. The rate must be measured within the linear portion of the absorbance curve. (Ex. Linear range from 2 min to 5 min)
Absorbance sample :As/min
blank :Ab/min
△A = (As−Ab) ≦ 0.20 Abs
Calculation
Activity (U/mg of powder) = {(ΔA/min)/6.22} × 3.01/0.01 × 1/x
6.22 : millimolar extinction coefficient of NADH at 340nm (cm²/µmol)
3.01 : final volume (ml)
0.01 : volume of enzyme solution (ml)
X : concentration of the sample in enzyme solution (mg/ml)
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| 批号(Lot Number) | 证书类型 | 货号 |
|---|---|---|
| 分析证书 | P1523406 | |
| 分析证书 | P1523406 |
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