转录学指导的维生素优化,以增强红色素产量在红色糖菌中
Xiang Ke1, Xing Jiang1, Shuohan Wang1
1State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China.
Bioresources and bioprocessing
|November 1, 2024
概括
补充特定的维生素,如胺酸 (TPP) 和维生素B12,可以显著提高Saccharopolyspora erythraea中的红色素产量. 优化的维生素组合将产量提高39%以上,提供工业应用.
科学领域:
- 微生物学 微生物学
- 代谢工程是代谢工程.
- 生物技术是生物技术.
背景情况:
- 红色糖菌 (Saccharopolyspora erythraea) 生产的抗生素是红色素.
- 优化发酵条件对于增加抗生素产量至关重要.
- 了解维生素在微生物新陈代谢中的作用是提高生产的关键.
研究的目的:
- 为了研究维生素补充剂对Saccharopolyspora erythraea. erythromycin生产的影响.
- 确定增强红红素生物合成的关键维生素.
- 为了优化维生素组合以获得最大的红红素产量.
主要方法:
- 比较转录学分析基因表达模式.
- 为了优化,普莱克特-伯曼设计和最的登路径.
- 针对性代谢和代谢流量分析以研究代谢调节.
主要成果:
- 在高产量突变菌株中观察到辅因子和维生素代谢中的明显基因表达模式.
- 提氨酸酸盐 (TPP),维生素B2,B6,B9,B12和血红素被确定为关键增强剂,增加了7.96-12.66%的红红素标位.
- 优化的维生素组合在摇瓶中增加了39.2%的红红素标位.
- 维生素补充调节了中央碳代谢,包括TCA循环和甲氨酸合成.
结论:
- 精确的维生素补充可以有效地完善新陈代谢途径,以增强红色素的生产.
- 这项研究为在工业范围内优化红红素发酵提供了宝贵的见解.
- 基于维生素作用的有针对性的代谢工程策略可以提高抗生素产量.
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