用HPLC检测进行平衡透析,以测量非血红素铁原酶的基质结合亲和力
Elizabeth R Smithwick1, Ambika Bhagi-Damodaran1, Anoop Rama Damodaran1
1Department of Chemistry, University of Minnesota - Twin Cities, Minneapolis, MN, United States.
Methods in enzymology
|September 11, 2024
概括
我们介绍了一种方法来测量像BesD.这样的酶的基质结合亲和力 (Kd). 这种技术使用平衡透析和高性能液体染色学 (HPLC) 进行准确的量化.
科学领域:
- 生物化学 生化学
- 酶学 是一种酶学.
- 分析化学 分析化学
背景情况:
- 酶动力学和基质结合亲和力 (Kd) 对于理解酶机制至关重要.
- 对于配体/基质结合研究,存在各种方法,但方法选择是酶和基质依赖的.
研究的目的:
- 描述一种可靠的方法来确定BesD的Kd,一个非血红素铁原酶,其原生基质素.
- 为生物化学研究中测量基质结合亲和力提供一种实用方法.
主要方法:
- 使用平衡透析来测量基质结合.
- 高性能液态染色学 (HPLC) 用于基质的定量.
- 该程序可以在无氧手套袋设置中进行.
主要成果:
- 这项研究成功地概述了测量氨酸BesD的Kd的协议.
- 该方法证明了对各种基质亲和度测量的适应性.
- 依赖于随时可用的HPLC仪器使这种方法更容易获得.
结论:
- 与HPLC相结合的平衡透析提供了一种可靠的方法来确定酶-基质结合亲和力.
- 这种技术适合在无氧条件下研究像BesD这样的酶.
- 描述的方法是多用途的,可以适应各种生化结合试验.
相关概念视频
02:18The Equilibrium Binding Constant and Binding Strength
12.8K
The equilibrium binding constant (Kb) quantifies the strength of a protein-ligand interaction. Kb can be calculated as follows when the reaction is at equilibrium:
12.8K
01:22Protein-Drug Binding: Determination Methods
142
Determining protein-drug binding can be achieved through indirect and direct methods, each providing valuable insights into the interaction between proteins and drugs.
Indirect methods involve isolating the bound drug from its free form in biological samples such as blood, serum, or plasma. These techniques aim to measure the percentage of drugs bound to proteins. Equilibrium dialysis is a commonly used method where the free drug concentration at equilibrium is measured by separating the bound...
Indirect methods involve isolating the bound drug from its free form in biological samples such as blood, serum, or plasma. These techniques aim to measure the percentage of drugs bound to proteins. Equilibrium dialysis is a commonly used method where the free drug concentration at equilibrium is measured by separating the bound...
142