在乳球菌乳酸菌中使用 chalcone 作为基质构建安托西亚宁生物合成系统 NZ9000000
Yujing Tian1, Na Liu1, Xiaowen Zhao2
1School of Life Sciences, Faculty of Medicine, Tianjin University, Tianjin, China.
Journal of basic microbiology
|July 29, 2024
概括
这项研究对益生菌Lactococcus lactis进行了安东生物合成的工程设计,创造了一个稳定的五步通路,用于从石墨板生产这些有价值的天然化合物.
科学领域:
- 微生物学 微生物学
- 代谢工程是代谢工程.
- 自然产品的合成自然产品的合成
背景情况:
- 安西是高价值的天然化合物,主要通过植物提取获得.
- 目前用于安托素生产的方法有限,需要替代的可持续生产策略.
研究的目的:
- 为了设计一种益生菌细菌,Lactococcus lactis NZ9000,用于糖化酸的生物合成.
- 为了建立一个稳定的,五步代谢途径,以快速产生素,使用石灰作为基质.
主要方法:
- 来自蓝生物合成 (CHI,F3H,DFR,ANS,3GT) 的基因被克隆出来.
- 在L. lactis NZ9000中构建了一个五步代谢途径,通过将基因集成到基因集群中,在特定促进子控制下的基因.
- 菌株工程涉及连续的基因插入和转化为L. lactis NZ9000.
主要成果:
- 经过工程改造的L. lactis菌株 (A和B) 成功产生了多种类型的抗素,包括卡利斯特芬化物和马尔维丁衍生物.
- 与野生类型菌株相比,LC-MS/MS分析证实,共同培养的超级生物中的安托西亚宁度增加.
- 这项研究表明,在益生菌宿主中,新兴的安东氨酸生物合成的可行性.
结论:
- 这项研究首次成功构建了益生菌L. lactis NZ9000中氨酸生物合成的五步代谢途径.
- 这种工程化途径为生产有价值的氨酸提供了一种新且稳定的方法.
- 这项工作为未来在自然化合物的微生物生产方面取得的进展奠定了基础.
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