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Updated: May 5, 2026

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The MultiBac Protein Complex Production Platform at the EMBL
Published on: July 11, 2013
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在 Bacillus subtilis 中,通过对遗传元素的组合优化,高效地生产复合糖酸酶
Tian Gan1, Fan Zhang1, Ming Zhuo1
1State Key Laboratory of Green Chemical Synthesis and Conversion, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, 310014, China; Institute of Fermentation Engineering, Zhejiang University of Technology, Hangzhou, 310014, China.
International journal of biological macromolecules
|October 5, 2025
概括
使用促进体工程和RBS查优化Bacillus subtilis中糖酸酶 (SPase) 表达,显著提高了酶的产生. 这导致了一种高效的生物工艺,用于生产2-O-α-d-glucopyranosyl glycerol (2-αGG).
科学领域:
- 生物技术是生物技术.
- 酶工程是什么? 酶工程是什么?
- 微生物发酵 微生物发酵
背景情况:
- 糖酸酶 (SPase) 对于合成功能性甘油酸至关重要,例如2-O-α-d-glucopyranosyl糖醇 (2-αGG).
- 在Bacillus subtilis中SPase的异质表达对工业应用具有重要意义.
- 优化遗传元素是B. subtilis.中高效异质基因表达的关键.
研究的目的:
- 为了增强Bacillus subtilis中的Limosilactobacillus reuteri中糖酸酶 (SPase) 的异质表达.
- 确定最佳的遗传元素,包括促进物和核糖体结合位 (RBS),用于高水平的SPase生产.
- 开发一种高效的生物工艺,用于生产2-O-α-d-glucopyranosyl糖醇 (2-αGG),使用工程B. subtilis.
主要方法:
- 结合策略被用来测试各种遗传元素的SPase表达.
- 促进体查发现PyvyD优于P43,双重促进体PydjO-PyvyD进一步增强了活性.
- 进行了核糖体结合部位 (RBS) 选和工程,以优化翻译启动.
- 用料批发发酵来扩大复合菌株的生产.
主要成果:
- 与P43相比,促进物PyvyD增加了310%的细胞外SPase活性.
- 一个双促进剂PydjO-PyvyD和优化的RBS (RBSB15) 进一步提高了酶活性.
- 最佳的重组菌株B. subtilis WB800 (pPydjO-PyvyD-RBSB15-LreSP-MT) 实现了9.1 U/mL的细胞外酶活性和8.0 g/L的蛋白质产量.
- 一个10倍稀释的发酵通过糖养生物转化产生了322.6g/L的2-αGG.
结论:
- 基因元素的兼容性对于B. subtilis.中成功的异质基因表达至关重要.
- 改造的B. subtilis菌株和优化的发酵过程为2-αGG生产提供了一个高效的平台.
- 这项研究表明,使用酶工程和微生物发酵,实现工业规模的糖化物合成的强大的生物工艺.
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