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相关概念视频

The Equilibrium Binding Constant and Binding Strength02:18

The Equilibrium Binding Constant and Binding Strength

12.9K
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:
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Protein-Drug Binding: Determination Methods01:22

Protein-Drug Binding: Determination Methods

179
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...
179
Protein-protein Interfaces02:04

Protein-protein Interfaces

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Many proteins form complexes to carry out their functions, making protein-protein interactions (PPIs) essential for an organism's survival. Most PPIs are stabilized by numerous weak noncovalent chemical forces. The physical shape of the interfaces determines the way two proteins interact. Many globular proteins have closely-matching shapes on their surfaces, which form a large number of weak bonds. Additionally, many PPIs occur between two helices or between a surface cleft and a...
12.5K

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Updated: Jun 30, 2025

Bio-layer Interferometry for Measuring Kinetics of Protein-protein Interactions and Allosteric Ligand Effects
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Bio-layer Interferometry for Measuring Kinetics of Protein-protein Interactions and Allosteric Ligand Effects

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蛋白质-蛋白质结合动力学通过生物层干涉测量

Jorge Santos-López1, Sara Gómez1,2, Francisco J Fernández3

  • 1Centro de Investigaciones Biológicas Margarita Salas (CIB-CSIC), Madrid, Spain.

Advances in experimental medicine and biology
|March 20, 2024
PubMed
概括

描述蛋白质与蛋白质相互作用是理解细胞功能的关键. 无标签的生物物理方法,如生物层干扰测量 (BLI),可以在没有蛋白质修饰的情况下提供敏感的动力测量.

关键词:
抗体是对抗体的一种.结合动力学 结合动力学生物层干涉度测试是生物层干涉度测试.C5a 过敏性毒素是一种补充系统的补充系统.没有标签的技术.蛋白质与蛋白质的相互作用斯特雷普塔维丁生物传感器

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科学领域:

  • 生物物理学的生物物理.
  • 分子生物学分子生物学
  • 生物化学 生物化学

背景情况:

  • 蛋白与蛋白相互作用 (PPI) 是细胞功能的基础.
  • 了解PPI动力学和热力学对于生理学和病理学至关重要.
  • 有各种方法来研究PPI,在敏感度,成本和实验设置上有所不同.

研究的目的:

  • 突出描述蛋白-蛋白相互作用动力学和热力学的重要性.
  • 引入生物层干扰测量 (BLI) 作为一种无标签的生物物理方法,用于研究PPI.
  • 为了将BLI与PPI分析的其他无标签技术进行比较.

主要方法:

  • 生物层干扰测量 (BLI) 是一种无标签的生物物理技术.
  • 无标签测试避免了蛋白质修饰或使用标签.
  • 与其他无标签的方法进行比较,例如表面等离子体共振 (SPR),热泳和异热定位热量计 (ITC).

主要成果:

  • BLI允许无标签测量蛋白质与蛋白质相互作用动力学.
  • 无标签方法提供优势,因为不需要蛋白质修饰或标签.
  • 有一系列的无标签技术可用于PPI分析.

结论:

  • 对PPI动力学和热力学的表征对于定量生物学理解至关重要.
  • 无标签的生物物理方法,包括BLI,是研究PPI的宝贵工具.
  • BLI提供了一种敏感的,无标签的方法来测量相互作用动力学.