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相关概念视频

Mechanism of Conjugation01:19

Mechanism of Conjugation

Bacterial conjugation is a mechanism of horizontal gene transfer that enables the exchange of genetic material between bacterial cells through direct contact. This process is facilitated by a donor cell carrying a conjugative plasmid, which encodes genes necessary for pilus formation, DNA replication, and transfer. The conjugative plasmid plays a central role in initiating and executing the transfer of genetic material.The tra region of the conjugative plasmid encodes proteins responsible for...

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相关实验视频

Updated: Jul 8, 2026

Monitoring the Assembly of a Secreted Bacterial Virulence Factor Using Site-specific Crosslinking
11:33

Monitoring the Assembly of a Secreted Bacterial Virulence Factor Using Site-specific Crosslinking

Published on: December 17, 2013

在聚基酸合成酶中剖析和利用模块间通信.

R S Gokhale1, S Y Tsuji, D E Cane

  • 1Department of Chemical Engineering, Stanford University, Stanford CA 94305-5025, USA.

Science (New York, N.Y.)
|April 16, 1999
PubMed
概括
此摘要是机器生成的。

模块化聚基酸合成酶对不同的乙烯链表现出惊人的耐受性. 这些酶的蛋白质工程允许模块之间转移中间体,从而提供了对其演变的见解.

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Conjugative Mating Assays for Sequence-specific Analysis of Transfer Proteins Involved in Bacterial Conjugation
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Conjugative Mating Assays for Sequence-specific Analysis of Transfer Proteins Involved in Bacterial Conjugation

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Analyzing Dynamic Protein Complexes Assembled On and Released From Biolayer Interferometry Biosensor Using Mass Spectrometry and Electron Microscopy
09:30

Analyzing Dynamic Protein Complexes Assembled On and Released From Biolayer Interferometry Biosensor Using Mass Spectrometry and Electron Microscopy

Published on: August 6, 2018

相关实验视频

Last Updated: Jul 8, 2026

Monitoring the Assembly of a Secreted Bacterial Virulence Factor Using Site-specific Crosslinking
11:33

Monitoring the Assembly of a Secreted Bacterial Virulence Factor Using Site-specific Crosslinking

Published on: December 17, 2013

Conjugative Mating Assays for Sequence-specific Analysis of Transfer Proteins Involved in Bacterial Conjugation
10:41

Conjugative Mating Assays for Sequence-specific Analysis of Transfer Proteins Involved in Bacterial Conjugation

Published on: January 4, 2017

Analyzing Dynamic Protein Complexes Assembled On and Released From Biolayer Interferometry Biosensor Using Mass Spectrometry and Electron Microscopy
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Analyzing Dynamic Protein Complexes Assembled On and Released From Biolayer Interferometry Biosensor Using Mass Spectrometry and Electron Microscopy

Published on: August 6, 2018

科学领域:

  • 生物化学 生物化学
  • 分子生物学分子生物学
  • 自然产品生物合成 自然产品生物合成

背景情况:

  • 模块化多基合成酶 (PKS) 是大型酶,可以合成复杂的自然产品.
  • 这些酶通过具有高特异性的装配线机制起作用.
  • 了解PKS模块的耐受性是解锁新型化合物合成的关键.

研究的目的:

  • 为了研究模块化多基合成酶中的单个模块的基底耐受性.
  • 探索蛋白质工程的潜力,以操纵PKS模块之间的链转移.
  • 了解模块化PKS的进化路径.

主要方法:

  • 位点定向的突变发生,以在PKS模块内和PKS模块之间设计链接区域.
  • 在体外测试以评估工程模块之间的多种链的转移.
  • 生物信息分析以比较工程PKS与自然发生的变体.

主要成果:

  • 单独的PKS模块对各种传入的乙烯链具有显著的耐受性.
  • 链接区域的工程成功地促进了生物合成中间体在非本地模块组合之间转移.
  • 证明了使用蛋白质工程来重定向PKS组装线路的可行性.

结论:

  • 模块化PKS在基质接受方面表现出固有的灵活性,挑战了严格的模块特定处理的先前假设.
  • PKS链接器的蛋白质工程是一种可行的策略,可以创建新的多基基结构.
  • 这项工作为合成生物学方法为天然产品药物发现和理解PKS演变提供了基础.