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相关概念视频

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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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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相关实验视频

Updated: Oct 1, 2025

A Method for Selecting Structure-switching Aptamers Applied to a Colorimetric Gold Nanoparticle Assay
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结构导向的设计预组织在双对应的Aptamers

Xiaoli Hu1, Linlin Tang1, Mengxi Zheng2

  • 1Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China.

Journal of the American Chemical Society
|March 4, 2022
PubMed
概括

研究人员开发了一种DNA支架策略,用于设计刚性双价体. 这种方法精确地控制了连接物定位,增强了对目标分子的结合性.

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科学领域:

  • 生物化学
  • 分子生物学
  • 结构生物学

背景情况:

  • 多价相互作用增强分子设计中的结合性.
  • 刚性支架对于控制联体的方向和空间定位至关重要.
  • 现有的方法缺乏用于设计多价联体的简单,刚性DNA支架的一般规则.

研究的目的:

  • 开发一个以晶体结构为指导的战略,以合理设计刚性双价体.
  • 为了精确地控制体部分的空间分离和方向.
  • 为了使适合分子部分能够同时结合到原生构造中的向蛋白质.

主要方法:

  • 采用了以晶体结构为指导的理性设计方法.
  • 设计了一种硬的DNA支架,
  • 描述了双价阿普坦与目标蛋白质的结合.

主要成果:

  • 成功设计了一种具有控制空间排列的刚性双价体.
  • 证明双价胺同时与标蛋白结合.
  • 与单价设计相比,观察到显著增强的结合力.
  • 经确认的体部分在结合时保持本地形状.

结论:

  • 这种以晶体结构为导向的策略使硬多价位体的合理设计成为可能.
  • 精确的空间控制增强了结合性.
  • 这种方法为设计多价值体提供了潜在的通用方法.