针对Levan生物合成路径中的瓶在 Bacillus subtilis 和通过计算建模和Omics集成的菌株优化
Aruldoss Immanuel1, Ragothaman M Yennamalli2, Venkatasubramanian Ulaganathan1,2
1Molecular Motors Lab, Department of Biotechnology, School of Chemical & Biotechnology, SASTRA Deemed to be University, Thanjavur, India.
Omics : a journal of integrative biology
|February 5, 2024
概括
代谢系统工程改善了Bacillus subtilis中的生物聚合物生产. 基因淘汰pgk和ctaD显著增加了levon产量,为菌株工程提供了新的途径.
科学领域:
- 生物技术和代谢工程 生物技术和代谢工程
- 微生物系统生物学微生物系统生物学
- 聚合物科学 聚合物科学
背景情况:
- 莱万是一种果糖聚合物,具有多种工业应用,包括水凝,药物输送和伤口愈合.
- 代谢系统工程对于提高各种生物体中特定代谢物的产量至关重要.
- 细菌细菌 (Bacillus subtilis) 作为代谢途径分析和基因工程的模型生物.
研究的目的:
- 用系统生物学方法解开Bacillus subtilis中levon生物合成的代谢途径.
- 识别必要的基因和限制狮子生产的瓶.
- 设计一种Bacillus subtilis菌株,以增强Levon生物聚合物生产能力.
主要方法:
- 对 Bacillus subtilis (ec_iYO844_lvn) 经过修订的基因组规模酶受约束代谢模型 (ecGEM) 的分析.
- 流量平衡分析 (FBA) 和流量可变性分析 (FVA) 模拟生长速度和代谢流量.
- 基因淘汰分析以确定增加Levon流量的目标.
主要成果:
- 确定最大生长速度为0.624小时-1的20mmol gDw-1小时-1糖摄入量.
- 鉴定pgk和ctaD作为淘汰关键基因,以增强levon生产.
- 与野生类型相比,基因干扰导致liven生产流量增加1.3倍 (pgk) 和1.4倍 (ctaD).
结论:
- 这项研究阐明了Bacillus subtilis.内Levan生物合成的瓶.
- 通过淘汰pgk和ctaD进行基因改造,提供了一种可行的策略,可以提高levon产量.
- 这些发现为Bacillus subtilis生理学提供了宝贵的见解,为高级菌株工程铺平了道路.
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