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相关概念视频

Protein Complexes with Interchangeable Parts01:57

Protein Complexes with Interchangeable Parts

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Groups of proteins may form a complex where each protein in this complex has a different role in the overall execution of the complex’s function. Often some of the proteins in the complex can be replaced by a closely related variant to give a complex that contains many of the same components yet is functionally distinct.
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order...
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Protein Complex Assembly02:41

Protein Complex Assembly

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Proteins can form homomeric complexes with another unit of the same protein or heteromeric complexes with different types.  Most protein complexes self-assemble spontaneously via ordered pathways, while some proteins need assembly factors that guide their proper assembly. Despite the crowded intracellular environment, proteins usually interact with their correct partners and form functional complexes.
Many viruses self-assemble into a fully functional unit using the infected host cell to...
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Tagging and Fusion Proteins01:24

Tagging and Fusion Proteins

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Proteins are involved in several cellular processes and biochemical reactions. Analyzing a specific protein of interest requires it to be isolated from the other proteins in the cell. This is achieved by overexpressing the specific gene in a suitable host to produce large quantities of the target protein. A tag or label is recombined with the gene to produce a fusion protein containing the target protein and the tag. The tags on these fusion proteins can then be used for easy detection and...
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相关实验视频

Updated: Jun 20, 2025

OaAEP1-Mediated Enzymatic Synthesis and Immobilization of Polymerized Protein for Single-Molecule Force Spectroscopy
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设计一种自我组装的蛋白质,用于有针对性的双重功能.

Xiao Ma1,2, Lun Yi1,3, Jiani Li1

  • 1State Key Laboratory of Fine Chemicals, Frontiers Science Centre for Smart Materials Oriented Chemical Engineering, School of Bioengineering, Dalian University of Technology, Dalian 116024, China.

Nano letters
|July 17, 2024
PubMed
概括

工程蛋白现在可以精确地使用新化学方法招募两个不同的蛋白质,减少合成生物学和医疗应用中的变异性.

关键词:
在正交的生物结合中.蛋白质脚手架是一种蛋白质脚手架.自组装的蛋白质子这是一种合成的代谢醇.

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Creating Highly Specific Chemically Induced Protein Dimerization Systems by Stepwise Phage Selection of a Combinatorial Single-Domain Antibody Library
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Directed Assembly of Elastin-like Proteins into defined Supramolecular Structures and Cargo Encapsulation In Vitro
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Creating Highly Specific Chemically Induced Protein Dimerization Systems by Stepwise Phage Selection of a Combinatorial Single-Domain Antibody Library
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科学领域:

  • 生物技术是生物技术.
  • 合成生物学 合成生物学
  • 蛋白质工程是指蛋白质工程.

背景情况:

  • 自组装蛋白质是组织感兴趣蛋白质 (POI) 的多功能支架.
  • 准确地将多个POI连接到单个子仍然是一个挑战,导致组装变化.
  • 现有的方法缺乏复杂,多个POI功能化所需的特异性.

研究的目的:

  • 设计一种新的蛋白质,DTMi3ST,能够独立地招募两个不同的POI.
  • 通过正交的SpyCatcher/SpyTag和DogCatcher/DogTag化学物质来证明受控的蛋白质的双重功能.
  • 验证平台在体外和细胞内环境中的实用性,以及构建功能生物组件.

主要方法:

  • 工程的DTMi3ST蛋白质与双招募站点.
  • 使用SpyCatcher (SC) /SpyTag (ST) 和DogCatcher (DC) /DogTag (DT) 绑定化学物质进行POI附着.
  • 在体外和活细胞实验中使用光蛋白作为模型POI.
  • 在大肠杆菌中构建膜结合酶组件.

主要成果:

  • 证明了对两个不同的POI进行受控的,独立的招募到DTMi3ST蛋白.
  • 在体外和活细胞内成功实现蛋白质的双重功能.
  • 在大肠杆菌中*使用功能化的子*设计了与膜结合的酶组件.
  • 在整个细菌膜中实现了69.6%的基质利用提升.

结论:

  • 设计的Mi3ST蛋白质平台能够实现精确的双重功能,减少组装变化.
  • 这种多功能纳米工具可方便构建复杂的功能性蛋白质组件,用于生物和生物医学应用.
  • 该平台显示了通过受控蛋白质组织来推进合成生物学和医学科学的巨大潜力.