相关实验视频
Updated: Apr 13, 2026

12:41
Stress-induced Antibiotic Susceptibility Testing on a Chip
Published on: January 8, 2014
6.4K
生物传感器检测到由周周等离子体蛋白质引起的压力
Alister J Cumming1, Diana Khananisho1, Mateusz Balka1
1Department of Biochemistry and Biophysics, Stockholm University, Stockholm SE-19468, Sweden.
ACS synthetic biology
|April 27, 2024
概括
一个新的生物传感器在Escherichia coli的重组蛋白质生产过程中检测细胞应激. 这种工具有助于优化有效的蛋白质分泌和折叠的条件,从而改善生物质和蛋白质产量.
科学领域:
- 生物技术是生物技术.
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
背景情况:
- 大肠杆菌是重组蛋白质生产的常见宿主.
- 许多重组蛋白质的正确折叠和功能需要二硫化键,需要分泌到氧化周等离子体.
- 在体内评估分泌效率和周等离子体折叠瓶一直具有挑战性.
研究的目的:
- 开发一种新的生物传感器,用于检测重组蛋白生产过程中的细胞压力.
- 为了识别蛋白质分泌和周等离子体折叠的瓶.
- 为了优化诱导条件,提高生物质和可溶性蛋白质产量.
主要方法:
- 开发一种生物传感器来检测细胞应激.
- 监测与蛋白质分泌和聚合相关的细胞应激指标.
- 光指纹的分析,以确定最佳的诱导参数.
主要成果:
- 生物传感器有效地检测出由低效的蛋白质分泌或周等离子体聚合引起的细胞应激.
- 光指纹与细胞压力水平相关.
- 优化诱导条件,使用生物传感器识别,减少细胞压力.
- 这些优化条件导致生物质增加和可溶性重组蛋白的提高产量.
结论:
- 开发的生物传感器是监测和优化大肠杆菌重组蛋白质生产的宝贵工具.
- 通过避免细胞容量过载,可以获得更好的蛋白质产量.
- 这种方法有助于识别用于增强生物处理的非压力诱导条件.
相关概念视频
The Unfolded Protein Response
7.1K
The ER is the hub of protein synthesis in a cell. It has robust systems to quality control protein folding and also for degradation of terminally misfolded proteins. Under normal conditions, a small proportion of misfolded proteins that cannot be salvaged need to be transported to the cytoplasm by the ER-associated degradation or ERAD pathways. However, if the ERAD cannot handle the misfolded proteins, the cell activates the unfolded protein response or UPR to adjust the protein folding...
7.1K
Other Stress Responses in Bacteria
541
Bacteria have global regulatory systems that control several types of stress mechanisms. These include Pho regulon and the heat shock response, which are essential systems for environmental adaptation, such as nutrient limitation and proteotoxic stress. The Pho regulon and the heat shock response exemplify bacterial resilience, enabling rapid adaptation to fluctuating environmental conditions.Pho RegulonBacteria require phosphorus for essential cellular processes, including nucleic acid...
541
Microbial Biosensors
62
Microbial biosensors are analytical devices that utilize living microbes to detect specific substances through measurable signals. These devices consist of two main components: biosensing organisms and signal-transducing elements. Biosensing organisms, such as Escherichia coli or Saccharomyces cerevisiae, are typically housed in multiwell plates connected to transducers, enabling rapid, real-time detection of target analytes.Signal Generation MechanismWhen a target analyte—such as...
62

