通过使用重组甘油氧化酶的合反应来确定糖酸酸酶活性
Pauline Duminil1,2, Céline Oury1, Michael Hodges3
1Université Paris-Saclay, CNRS, INRAe, Université Paris Cité, Université d'Evry, Institute of Plant Sciences Paris-Saclay (IPS2), Gif-sur-Yvette, France.
Methods in molecular biology (Clifton, N.J.)
|June 11, 2024
概括
本研究描述了一种新的光谱光度法,用于测量糖酸酸酶 (PGLP) 活性. 该试验使用与糖氧化酶 (GOX) 的合反应,可以应用于纯化的酶或植物蛋白提取物.
科学领域:
- 生物化学 生物化学
- 酶学 是一种酶学.
- 植物生理学 植物生理学
背景情况:
- 糖酸酶 (PGLP) 对于代谢2-糖酸至关重要.
- 糖氧化酶 (GOX) 进一步加工糖,产生过氧化 (H2O2).
- 可以通过光谱测量检测H2O2,从而可以进行酶活性检测.
研究的目的:
- 为量化PGLP活动开发一种新的光谱测量试验.
- 建立一种可靠的方法来测量各种生物样本中的PGLP.
主要方法:
- 使用PGLP和重组阿拉比多普西斯塔利亚纳GOX.设计了一种合酶测定.
- 该试验监测了o-dianisidine在440nm时被H2O2氧化.
- 该协议使用纯化的PGLP和来自Arabidopsis的全溶性蛋白质提取物进行了验证.
主要成果:
- 成功地建立了一种敏感和特定的光谱光度测量方法,用于PGLP活动.
- 该试验证明了纯化酶和复杂蛋白质混合物的可靠性能.
- 该方法允许实时监测酶反应.
结论:
- 开发的试验为PGLP活动测量提供了一个有效的工具.
- 该方法适用于生物化学研究和植物蛋白提取物的分析.
- 它促进了对光呼吸和相关代谢途径的研究.
相关概念视频
Glycolysis: Preparatory Phase
13.4K
In cellular metabolism (the complete breakdown of glucose to extract energy), glycolysis is the first step. Glycolysis takes place in the cytoplasm of both prokaryotic and eukaryotic cells. Glucose enters heterotrophic cells in two ways. One method is through secondary active transport, where the transport takes place against the glucose concentration gradient. The other mechanism uses a group of integral proteins called GLUT proteins, also known as glucose transporter proteins. These...
13.4K
Glycolysis: Pay-off Phase
9.8K
So far, glycolysis has cost the cell two ATP molecules and produced two small, three-carbon sugar molecules. These molecules will proceed through the second half of the pathway, and sufficient energy will be extracted to pay back the two ATP molecules used as an initial investment and produce a profit for the cell of two additional ATP molecules and two even higher-energy NADH molecules.
Step 1 - 5: Glycolysis Preparatory Phase
The first phase of glycolysis has 5 steps where the glucose is...
Step 1 - 5: Glycolysis Preparatory Phase
The first phase of glycolysis has 5 steps where the glucose is...
9.8K
Energy-releasing Steps of Glycolysis
139.1K
Glycolysis is divided into two phases based on whether energy is utilized or released. While the first phase consumes ATP, the second phase produces energy in the form of ATP and NADH. The energy is released over a sequence of reactions that turns G3P into pyruvate. The energy-releasing phase—steps 6-10 of glycolysis—occurs twice, once for each of the two 3-carbon sugars produced during steps 1-5 of the first phase.
The first energy-releasing step—the 6th step of glycolysis...
The first energy-releasing step—the 6th step of glycolysis...
139.1K
Energy-requiring Steps of Glycolysis
163.4K
Glucose is the source of nearly all energy used by organisms. The first step of converting glucose into usable energy is called glycolysis. Glycolysis occurs in the cytosol of the cell over two phases: an energy-requiring phase and an energy-releasing phase. Over the first three steps, glucose is converted into different forms and attached to two phosphate groups donated by two ATP molecules, resulting in an unstable sugar. In the next two stages, the unstable sugar splits into two sugar...
163.4K
What is Glycolysis?
164.5K
Overview
Cells make energy by breaking down macromolecules. Cellular respiration is the biochemical process that converts "food energy" (from the chemical bonds of macromolecules) into chemical energy in the form of adenosine triphosphate (ATP). The first step of this tightly regulated and intricate process is glycolysis. The word glycolysis originates from the Latin glyco (sugar) and lysis (breakdown). Glycolysis serves two main intracellular functions: generating ATP and generating...
Cells make energy by breaking down macromolecules. Cellular respiration is the biochemical process that converts "food energy" (from the chemical bonds of macromolecules) into chemical energy in the form of adenosine triphosphate (ATP). The first step of this tightly regulated and intricate process is glycolysis. The word glycolysis originates from the Latin glyco (sugar) and lysis (breakdown). Glycolysis serves two main intracellular functions: generating ATP and generating...
164.5K


