蛋白质表达系统结合了Bacillus subtilis中的一个可诱导黄素的促进物和T7RNA聚合酶
Ami Koreeda1, Rina Taguchi1, Kanon Miyamoto1
1Department of Biotechnology, Faculty of Life Science and Biotechnology, Fukuyama University, Fukuyama, Hiroshima, Japan.
Bioscience, biotechnology, and biochemistry
|June 6, 2023
概括
在Bacillus subtilis中,一种新的可诱导黄素的T7表达系统可以严格控制重组蛋白质的产生. 修改后的促进剂提高了产量,提供了高精度或最大蛋白质生产的选择.
科学领域:
- 微生物学 微生物学
- 分子生物学分子生物学
- 生物技术是生物技术.
背景情况:
- 细菌中的重组蛋白质生产需要精确的控制,以防止宿主细胞因过度生产而受损.
- T7表达系统被广泛使用,但需要有效的调节机制来控制基因表达.
研究的目的:
- 在 Bacillus subtilis 中开发和表征一种可诱导黄素的T7表达系统.
- 用记者基因评估开发系统的监管控制和表达水平.
主要方法:
- 使用qdoI促进体来调节Bacillus subtilis中的T7RNA聚合酶 (T7pol) 的flavonoid诱导T7表达系统的构建.
- 在多复制等离子体上利用增强的绿色光蛋白 (eGFP) 记者基因来评估系统性能.
- 将原始qdoI促进剂与T7控制的混合衍生品进行了比较.
主要成果:
- 开发的系统证明了对T7多元表达的严格调节,可由色丁和色丁等黄类药物诱导.
- 与原始促进剂相比,混合促进剂构造导致诱导时最大表达水平增加了6.6倍.
- 在混合结构的非诱导条件下观察到低水平的表达泄漏.
结论:
- 黄诱导的T7表达系统为Bacillus subtilis的重组蛋白质生产提供了可控制的方法.
- 原始和混合促进系统之间的选择取决于控制严格性与生产产量的具体要求.
- 这种系统为优化细菌宿主中的蛋白质表达策略提供了灵活性.
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