磷酸果糖激酶 (PFK)

CAS: 9001-80-3 货号: P1433724
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级别和纯度: 生物活性 ? 生物活性级(Bioactive)—— 经验证在功能检测中保持生物活性。当分子须具有功能活性而不仅是纯度时使用。 重组 ? 重组(Recombinant)—— 通过重组表达生产,序列确定、批次稳定。适用于来源明确、无动物源的可重现蛋白。 ActiBioPure™ ? ActiBioPure™ —— 阿拉丁面向生物活性和重组产品的优质系列。当同时需要高纯度和保持生物活性时使用。 高性能 ? 高性能级 —— 纯度和性能特性经过优化。适用于普通等级无法满足的灵敏分析。 EnzymoPure™ ? EnzymoPure™ —— 阿拉丁的高质量酶解决方案系列。当酶纯度和明确活性决定检测或工艺性能时使用。 ≥150 U/mg enzyme powder
Accession #
P00512
生物活性
≥150 U/mg enzyme powder
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规格
库存
价格
数量
50U
P1433724-50U
现货 Stock Image
¥699.90
250U
P1433724-250U
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¥2,199.90
1KU
P1433724-1KU
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¥5,499.90
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为什么选择此级别

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。

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储存与运输

-20°C储存,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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质量文档

SDS、COA、产品数据表及规格说明书均可下载。可通过批号查询获取批次 COA。

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文献证明

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。

概述


Phosphofructokinase from Bacillus stearothermophilus is a key enzyme in sugar metabolism that catalyzes the conversion of fructose-6-phosphate to fructose-1,6-bisphosphate during glycolysis. The enzyme's ability to bind fructose-6-phosphate can be inhibited by phosphoenolpyruvate (PEP), thereby regulating the rate of glycolysis. Phosphofructokinase from Bacillus stearothermophilus can be used for the measurement of fructose-6-phosphate levels.

Preparation and Specification

Appearance: White to pale yellowish amorphous powder, lyophilized

Specific activity: More than 150 U/mg solid

Contaminants:

ATPase: Less than 0.005% (U/U)

NADPHox: Less than 0.010% (U/U)

Properties

Molecular weight: 72 kDa (gel filtration); 35 kDa (SDS-PAGE) 

Isoelectric point: pH 5.9 

Michaelis constants: D-Fructose-6-phosphate (D-F-6-P): 5.8 mM (at 37℃); ATP: 0.07 mM (at 37℃) 

Optimum pH: 9.0                                                                                              Figure 1 

pH stability: 6.0–10.0 (37℃, 1 hr.)                                                                   Figure 2 

Thermal stability: Stable at 55℃ and below (pH8.5, 30min)                           Figure 3 

Activators: Mg²⁺

Applications

This enzyme is useful for enzymatic determination of F-6-P.

Assay 

Principle 

The assay is based on the decrease in absorbance at 340 nm of NADH in the following reaction:

Unit definition

One unit is defined as the amount of enzyme which converts 1 μmol of fructose-6-phosphate to Fructose-1,6-bisphosphate per minute at 37℃ under the conditions specified in the assay procedure.

Reagents

1. Reaction mixture (10test)

0.1M Tris-HCl Buffer pH9.027.36 ml
0.5M Fructose-6-P (Fructose-6-phosphate·2Na) solution0.30 ml
0.1M ATP (Adenosine triphosphate·2Na·3H₂O) solution0.39 ml
56mM PEP [Phospho(enol)pyruvic acid tri(cyclohexylammonium) salt] solution0.60 ml
13.1mM NADH·(2Na·3H₂O·Reduced form) solution0.60 ml
2.5M KCl solution0.06 ml
0.1M MgSO₄ solution0.60 ml
5,000U/ml PK (Pyruvate kinase) /Ammonium sulfate suspension0.03 ml
550U/ml LDH (Lactate dehydrogenase) /Ammonium sulfate suspension0.06 ml

2. Enzyme dilution buffer: 50mM KH₂PO₄ – NaOH buffer pH8.0 (25℃)

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 decrease 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/min=(As​/min−Ab​/min)≤0.25 Abs/min 

Calculation

Activity (U/mg of powder) = {(△ A/min)/6.22} × 3.01/0.01 × 1/x

= △ A/min. × 48.39 ÷ X

6.22: millimolar extinction coefficient of NADPH 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)

规格

产品名称
磷酸果糖激酶 (PFK)
别名
果糖6-磷酸激酶 来源于嗜热脂肪芽胞杆菌 | 磷酸果糖激酶, 来源于嗜热脂肪芽孢杆菌 | 6-磷酸果糖激酶 | ATP:D-果糖6-磷酸1-磷酸转移酶
英文别名
ATP:D–fructose–6–phosphate–1–phosphotransferase | Fructose-6-phosphate Kinase from Bacillus stearothermophilus | Phosphofructokinase,Bacillus stearothermophilus | 6-Phosphofructokinase | ATP:D-fructose 6-phosphate 1-phosphotransferase | phosphofructokinas
规格或纯度
生物活性, 重组, ActiBioPure™, 高性能, EnzymoPure™, ≥150 U/mg enzyme powder
生化机理
Catalyzes the phosphorylation of D-fructose 6-phosphate to fructose 1,6-bisphosphate by ATP, the first committing step of glycolysis.
生物活性
≥150 U/mg enzyme powder
种属
嗜热脂肪地芽孢杆菌(Geobacillus stearothermophilus)
来源
重组表达
预测分子量
72 kDa (gel filtration)
SDS-PAGE
35 kDa
CAS编号和信息
9001-80-3
酶学委员会编号
EC 2.7.1.11
分子类型
酶
产品线
生物产品
储存与运输
物理形态
冻干(Lyophilized)
浓度
≥150 U/mg enzyme powder
复溶
Reconstitute in 50mM KH₂PO₄−NaOH buffer pH8.0 (25℃) to a concentration of 1mg/ml.
储存条件
-20°C储存,避免反复冻融
运输条件
超低温运输
稳定性与储存
长期储存-20℃(12个月);复溶后建议分装,避免反复冻融。
单位定义
One unit is defined as the amount of enzyme which converts 1 μmole of fructose–6–phosphate to Fructose–1,6 – bisphosphate per minute at 37℃ under the conditions specified in the assay procedure.

技术文档

📋 安全数据表 (SDS)

全面的危险、操作、储存及法规合规文件。

下载 SDS →

✅ 分析证书 (COA)

批次质量数据。输入批号以获取对应 COA。

查询 COA →

📊 产品数据表

产品规格和应用的快速参考摘要。

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🔬 规格说明书

该级别的完整质量属性和验收标准。

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高级数据

质检证书(CoA,COO,BSE/TSE 和分析图谱)
C of A & Other Certificates(BSE/TSE, COO):
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找到3个结果

批号(Lot Number) 证书类型 货号
ZJ26F0838833 分析证书 P1433724
ZJ26F0838832 分析证书 P1433724
ZJ26F0838831 分析证书 P1433724
技术文档和文章
糖代谢中的12类关键酶
Twelve Key Enzymes in Glucose Metabolism
细胞代谢酶在能量代谢、氧化还原与信号转导中的功能体系综述
Functional System Overview of Cellular Metabolic Enzymes in Energy Metabolism, Redox, and Signal Transduction
糖脂代谢交叉调控与代谢性疾病发生发展的分子机制
Molecular Mechanisms of Crosstalk Between Glucose and Lipid Metabolism in the Initiation and Progression of Metabolic Diseases
PGI、HK、PFK和G6PDH在糖酵解与磷酸戊糖途径分流分析中的实验评价
Experimental Evaluation of PGI, HK, PFK, and G6PDH in Glycolysis and Pentose Phosphate Pathway Branching Analysis
糖酵解限速酶调控:己糖激酶、磷酸果糖激酶与丙酮酸激酶的功能比较
Regulation of Glycolytic Rate-Limiting Enzymes: Functional Comparison of Hexokinase, Phosphofructokinase, and Pyruvate Kinase
溶液计算器