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通过复合性 Pseudomonas putida KT244040 来从糖中合成多基酸盐的生物合成
Hye Min Song1, Seo Hyun Lim1, Eun Seo Lee1
1Department of Chemical Engineering and Materials Science, Graduate Program in, System Health, Science and Engineering, Ewha Womans University, Seoul, 03760, Republic of Korea.
Chembiochem : a European journal of chemical biology
|February 26, 2025
概括
工程造型的Pseudomonas putida现在可以利用糖糖来生产多氧氨酸 (PHA). 这一突破使得从丰富,低成本的碳源中有效合成生物聚合物.
科学领域:
- 代谢工程是代谢工程.
- 微生物生物技术 微生物生物技术
- 聚合物科学 聚合物科学
背景情况:
- 伪虫是一种多功能细菌,具有显著的生物技术潜力.
- 高效的微生物生产聚基酸 (PHAs) 需要优化碳来源的利用.
- 糖是一种丰富且具有成本效益的碳来源,但其由P. putida直接利用是有限的.
研究的目的:
- 为了设计Pseudomonas putida中的糖糖利用途径.
- 评估从糖中生产中链长的多基酸盐 (MCL-PHA) 和多基酸盐 (P3HB) 的生产情况.
- 评估工程P. putida.中糖转化和PHA积累的效率.
主要方法:
- 从曼海米亚 (Mannheimia succiniciproducens) 引入编码β-fructofuranosidase的sacc基因到P. putida中.
- 使用西方斑点分析确认酶分泌.
- 在有限的气条件下,在批量/食批量发酵中,使用糖作为碳来源,培养工程P. putida.
主要成果:
- 工程P. putida成功地将糖糖水解成葡萄糖和果糖.
- 从砂糖中获得10.52%重量MCL-PHA和9.16%重量P(3HB) 的产量.
- 料批发发酵的产量为30.2 g/L P(3HB) 与38.1%的重量积累,证明了糖分衍生糖的有效利用.
结论:
- 工程设计的P. putida菌株具有功能性糖糖利用途径.
- 这种代谢工程方法使得从糖糖中有效地生产PHA.
- 开发的系统为可持续的生物聚合物制造提供了一个有希望的平台.
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