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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

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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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Conserved Binding Sites01:49

Conserved Binding Sites

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Many proteins’ biological role depends on their interactions with their ligands, small molecules that bind to specific locations on the protein known as ligand-binding sites. Ligand-binding sites are often conserved among homologous proteins as these sites are critical for protein function.
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally...
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Ligand Binding Sites02:40

Ligand Binding Sites

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Proteins are dynamic macromolecules that carry out a wide variety of essential processes; however, the activities of most proteins depend on their interactions with other molecules or ions, known as ligands.
Protein-ligand interactions are quite specific; even though numerous potential ligands surround a cellular protein at any given time, only a particular ligand can bind to that protein. Moreover, a ligand binds only to a dedicated area on the surface of the protein, known as the...
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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...
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Protein-Drug Binding: Determination Methods01:22

Protein-Drug Binding: Determination Methods

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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...
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相关实验视频

Updated: May 15, 2025

An Optimized Quantitative Pull-Down Analysis of RNA-Binding Proteins Using Short Biotinylated RNA
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An Optimized Quantitative Pull-Down Analysis of RNA-Binding Proteins Using Short Biotinylated RNA

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蛋白质-RNA对接基准v3.0 集成与结合亲缘关系

Shri Kant1, Chandran Nithin2, Sunandan Mukherjee3

  • 1Computational Structural Biology Laboratory, Department of Bioscience and Biotechnology, Indian Institute of Technology Kharagpur, Kharagpur, India.

Proteins
|April 9, 2025
PubMed
概括
此摘要是机器生成的。

更新的蛋白质-RNA对接基准v3.0 (PRDBv3.0) 将蛋白质-RNA相互作用数据扩展到197个案例. 本资源有助于评估对接和绑定亲和力预测方法.

关键词:
结合性亲和力是一种结合性亲和力.形状的灵活性 形状的灵活性蛋白RNA复合体 蛋白RNA复合体蛋白质RNA对接方式蛋白RNA相互作用

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科学领域:

  • 结构生物学 结构生物学
  • 计算生物学 计算生物学
  • 生物信息学是一种生物信息学.

背景情况:

  • 蛋白质-RNA相互作用对于细胞过程至关重要.
  • 这些相互作用的准确建模对于理解生物功能至关重要.
  • 现有的蛋白质-RNA对接的基准需要更新以反映新的结构数据.

研究的目的:

  • 介绍蛋白质-RNA对接基准版本3.0 (PRDBv3.0),这是一个评估计算对接方法的更新资源.
  • 提供一个全面的数据集,包括各种绑定状态 (无绑定-无绑定,无绑定-无绑定,绑定-无绑定) 和灵活性类 (刚体,半灵活,全灵活).
  • 编目结合亲和数据和RNA结合域,以支持开发更准确的预测工具.

主要方法:

  • 从蛋白质数据库 (PDB) 整理了197个蛋白质-RNA复合体,截至2024年7月.
  • 基于绑定伙伴状态 (UU,UB,BU) 和蛋白质接口灵活性 (R,S,F) 的复合物被分类.
  • 对105个复合体和255个独特的RNA结合域进行编目结合亲和力 (Kd) 值.

主要成果:

  • PRDBv3.0包含197个测试案例,比以前版本增加了62%.
  • 该基准包括27个UU,160个UB和10个BU案件.
  • 它有117个刚体,41个半灵活和29个完全灵活的复合体.
  • 结合亲缘关系数据和RNA结合域被纳入用于增强分析.

结论:

  • PRDBv3.0提供了一个显著扩展和更多样化的数据集,用于对比蛋白质-RNA对接工具.
  • 包括亲和数据和RNA结合域,有助于开发预测结合强度的方法.
  • 这一更新的基准将推动研究蛋白质-RNA相互作用的计算方法的进步.