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相关概念视频

Covalently Linked Protein Regulators02:04

Covalently Linked Protein Regulators

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Proteins can undergo many types of post-translational modifications, often in response to changes in their environment. These modifications play an important role in the function and stability of these proteins. Covalently linked molecules include functional groups, such as methyl, acetyl, and phosphate groups, and also small proteins, such as ubiquitin. There are around 200 different types of covalent regulators that have been identified.
These groups modify specific amino acids in a protein....
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Ligand Binding and Linkage00:49

Ligand Binding and Linkage

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Allosteric proteins have more than one ligand binding site; the binding of a ligand to any of these sites influences the binding of ligands to the other sites. When a protein is allosteric, its binding sites are called coupled or linked.  In the case of enzymes, the site that binds to the substrate is known as the active site and the other site is known as the regulatory site. When a ligand binds to the regulatory site, this leads to conformational changes in the protein that can influence...
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相关实验视频

Updated: May 27, 2025

Combining Chemical Cross-linking and Mass Spectrometry of Intact Protein Complexes to Study the Architecture of Multi-subunit Protein Assemblies
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Combining Chemical Cross-linking and Mass Spectrometry of Intact Protein Complexes to Study the Architecture of Multi-subunit Protein Assemblies

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通过化学无活性残留物进行蛋白质交叉链接的宏循环辅助平台方法.

Zhongyu Li1, Liping Pu1, Delong Hou1,2

  • 1Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, Sichuan University, Chengdu 610065, PR China.

Nano letters
|February 19, 2025
PubMed
概括

这项研究引入了一种新的方法,利用工程宏循环与非活性芳香残留物结合,以交叉链接蛋白质. 这种方法通过克服传统交叉连接方法的局限性来增强生物组装工程和功能.

关键词:
生物组件 生物组件黄瓜[7]uril 是一种.主机-客户绑定绑定蛋白质交叉链接 蛋白质交叉链接

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Monitoring the Assembly of a Secreted Bacterial Virulence Factor Using Site-specific Crosslinking
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Combining Chemical Cross-linking and Mass Spectrometry of Intact Protein Complexes to Study the Architecture of Multi-subunit Protein Assemblies
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Isolation of Labile Multi-protein Complexes by in vivo Controlled Cellular Cross-Linking and Immuno-magnetic Affinity Chromatography
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科学领域:

  • 生物化学 生物化学
  • 蛋白质工程是指蛋白质工程.
  • 材料科学 材料科学 材料科学

背景情况:

  • 传统的蛋白质交叉链接依赖于化学活性残留物 (胺基/碳酸).
  • 这些活性位点的耗尽限制了蛋白质组合的进一步工程和生物功能.

研究的目的:

  • 开发一个新的平台,通过化学不活跃的残留物交叉链接蛋白质.
  • 设计具有增强稳定性和功能性的生物组件.

主要方法:

  • 利用分子工程[7]uril宏循环来选择性,与芳香残留的非共价结合.
  • 将这种宏循环辅助方法应用于各种天然蛋白质.

主要成果:

  • 通过以前不活跃的残留物实现了蛋白质交叉链接.
  • 由此产生的生物组件的机械强度,热和酶稳定性与黄金标准方法相当或优于黄金标准方法.
  • 通过新的交叉链接手柄成功设计了蛋白质.

结论:

  • 宏观循环辅助平台为蛋白质生物组装制造提供了一个新的策略.
  • 这种方法克服了传统化学交叉链接的内在局限性.
  • 能够创建用于各种应用的先进生物组件.