在Bacillus subtilis中通过组合微调策略对酸D的高水平细胞外表达进行了微调,以实现酸的高效生物合成
Peng Zhang1, Xin-An Mao2, Jin-Song Gong3
1Key Laboratory of Carbohydrate Chemistry and Biotechnology of Ministry of Education, School of Life Sciences and Health Engineering, Jiangnan University, Wuxi 214122, PR China; School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, PR China.
Bioresource technology
|September 29, 2024
概括
这项研究通过优化表达系统和发酵来增强Bacillus subtilis中的脂酶D (PLD) 生产. 这一突破实现了创纪录的PLD产量,并使高效的酸生物合成成为可能.
科学领域:
- 生物技术是生物技术.
- 微生物工程 微生物工程
- 酶的生产 酶的生产
背景情况:
- 细菌细菌是微生物细胞工厂的一个有希望的宿主.
- 目前B. subtilis的脂酶D (PLD) 生产能力不足以适用于工业应用.
研究的目的:
- 为了增强Bacillus subtilis中脂酶D (PLD) 的分泌表达.
- 使用增强的PLD建立一个有效的酸 (PA) 生物合成系统.
主要方法:
- 促进剂和信号的共同优化用于分泌表达.
- 实施一个料批发发酵策略.
- 使用产生的PLD.构建一个酸 (PA) 生物合成系统.
主要成果:
- 实现了4056.9U/mL的PLD生产纪录,效率为52.0U/mL/h.
- 建立了一个PA生物合成系统,产量为219.1g/L.
- 证明了迄今为止全球最高的PLD生产和PA收益率.
结论:
- 开发出的分泌表达系统显著增强了B. subtilis.中的PLD产量.
- 该系统具有工业PLD生产和酶式脂修饰的潜力.
- 为B. subtilis.中异质蛋白过度表达提供了有价值的参考资料.
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