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相关概念视频

Coordination of Gene Expression Processes in Bacteria01:29

Coordination of Gene Expression Processes in Bacteria

The DNA replication, transcription, and translation processes are intricately coupled in bacteria, allowing efficient gene expression and rapid protein synthesis. While this physical and functional coordination is advantageous, it introduces challenges that bacteria overcome through specific regulatory mechanisms.Coupling of Replication, Transcription, and TranslationThe coupling of replication, transcription, and translation is a hallmark of bacterial gene expression. As the replisome unwinds...
Stringent Response in E. coli01:23

Stringent Response in E. coli

Bacterial growth is closely tied to nutrient availability, with cells proliferating exponentially under favorable conditions and entering a stationary phase when resources become scarce. This transition is mediated by a regulatory mechanism known as the stringent response, which allows bacteria to adapt to nutrient deprivation by modulating gene expression and metabolic activity.During nutrient scarcity, intracellular amino acid levels decline. It results in the accumulation of uncharged tRNAs...

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相关实验视频

Updated: May 13, 2026

Engineering Adherent Bacteria by Creating a Single Synthetic Curli Operon
15:28

Engineering Adherent Bacteria by Creating a Single Synthetic Curli Operon

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设计基于phi15的基因表达系统,用于Pseudomonas putida中严格的基因表达.

Eveline-Marie Lammens1, Daniel C Volke2, Alison Kerremans1

  • 1Department of Biosystems, Laboratory of Gene Technology, KU Leuven, Kasteelpark Arenberg 21 box 2462, 3001, Leuven, BE, Belgium.

Communications biology
|February 5, 2025
PubMed
概括
此摘要是机器生成的。

一个新的phi15细菌表达系统为Pseudomonas putida的T7平台提供了一个严格而灵活的替代方案. 这种优化的系统提高了蛋白质生产产量,适合各种生物技术应用.

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Inducible T7 RNA Polymerase-mediated Multigene Expression System, pMGX
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Inducible T7 RNA Polymerase-mediated Multigene Expression System, pMGX

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Generation of In-Frame Gene Deletion Mutants in Pseudomonas aeruginosa and Testing for Virulence Attenuation in a Simple Mouse Model of Infection
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相关实验视频

Last Updated: May 13, 2026

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Engineering Adherent Bacteria by Creating a Single Synthetic Curli Operon

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14.4K
Inducible T7 RNA Polymerase-mediated Multigene Expression System, pMGX
10:09

Inducible T7 RNA Polymerase-mediated Multigene Expression System, pMGX

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科学领域:

  • 微生物学 微生物学
  • 合成生物学 合成生物学
  • 生物技术是生物技术.

背景情况:

  • T7菌体RNA聚合酶 (RNAP) 是一个常见的表达系统,但在非模型微生物中引起细胞毒性.
  • 开发替代表达平台对于扩大各种微生物宿主中的蛋白质生产至关重要.

研究的目的:

  • 开发和优化一种基于菌体phi15的新型表达系统,用于Pseudomonas putida.
  • 为增强蛋白质生产创造一个严格且高度可诱导的系统.

主要方法:

  • 为控制基因表达设计了一个phi15RNAP和直角促剂.
  • 引入了一种phi15溶酶突变,用于严格调节,以及一个phi15gp16抑制剂,以解生长和生产.
  • 开发了优化的P. putida宿主和与金门相容的载体.

主要成果:

  • 实现了具有200倍可诱导性的严格表达系统.
  • 脱细胞生长和蛋白质生产增加了20%的表达水平.
  • 与现有系统相比,化酶产量增加了2.5到5倍.

结论:

  • 菲15表达系统为P. putida.提供了T7系统的多功能和高效的替代方案.
  • 该系统的组件 (RNAP,促进剂,溶酶,生长脱剂) 为微生物生物技术提供了灵活的"插即用"解决方案.