通过转录基因剖析识别和分析大肠杆菌异质蛋白表达的关键基因
Anxiang Chen1, Yuguo Dong1, Huaigu Jiang1
1State Key Laboratory of Bioreactor Engineering, New World Institute of Biotechnology, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China.
Molecular biology reports
|October 19, 2024
概括
这项研究通过高密度发酵和铁有限条件来增强大肠杆菌中异质蛋白质的产生. 这种方法显著提高了蛋白质产量和生物质,同时提高了葡萄糖利用率.
科学领域:
- 生物技术是生物技术.
- 分子生物学分子生物学
- 微生物工程 微生物工程
背景情况:
- 大肠杆菌是生产外来蛋白质的常见宿主.
- 大肠杆菌中的蛋白质表达面临着包括体的形成和降解等挑战.
研究的目的:
- 研究改善大肠杆菌中高产异质蛋白生产的方法.
- 了解增强蛋白质表达背后的遗传机制.
主要方法:
- 在5L生物反应器中进行高密度发酵.
- 诱导后0,4小时和12小时进行转录分析.
- 丰富分析以确定关键的遗传途径.
- 在缺乏铁的条件下进行化学定位培养.
主要成果:
- 与对照组相比,蛋白质产量增加了2.25倍.
- 在诱导后确定了数百个差异表达的基因.
- 开发出铁含量有限的菌株,其生物质增加了36%,蛋白质表达增加了32%.
- 观察到葡萄糖利用率提高,没有酸溢出代谢.
结论:
- 在大肠杆菌中开发了一种新的高产异质蛋白生产策略.
- 了解基因表达变化为优化蛋白质生产提供了洞察力.
- 铁有限的化学定位培养通过提高代谢效率来改善生物质和蛋白质产量.
相关概念视频
02:24Ribosome Profiling
3.5K
Ribosome profiling or ribo-sequencing is a deep sequencing technique that produces a snapshot of active translation in a cell. It selectively sequences the mRNAs protected by ribosomes to get an insight into a cell’s translation landscape at any given point in time.
Applications of ribosome profiling
Ribosome profiling has many applications, including in vivo monitoring of translation inside a particular organ or tissue type and quantifying new protein synthesis levels.
The technique...
Applications of ribosome profiling
Ribosome profiling has many applications, including in vivo monitoring of translation inside a particular organ or tissue type and quantifying new protein synthesis levels.
The technique...
3.5K
02:11Reporter Genes
11.2K
Reporter genes are a type of protein-coding gene that are often tagged to a gene of interest. Once inside a target cell, reporter genes usually produce visually identifiable characteristics like fluorescence and luminescence when expressed along with the gene of interest. Thus, reporter genes “report” the presence or absence of genes of interest in an organism, determine the gene expression pattern, or track the physical location of a DNA segment or protein in the cell.
11.2K