通过优化DXS表达和融合短链prenyltransferases,改善了对税烯的产生
Siqi He1, Anne-Sophie M W Bekhof1, Eli Z Popova1
1Department of Chemical and Pharmaceutical Biology, Groningen Research Institute of Pharmacy, University of Groningen, Antonius Deusinglaan 1, 9713 AV Groningen, the Netherlands.
New biotechnology
|July 3, 2024
概括
过度表达1-deoxy-d-xylulose-5-phosphate合成酶 (DXS) 和使用前转移酶融合显著增加了 taxa-4,11-diene 的产生. 这一进展对于增强抗癌关键化合物帕克利塔塞尔生物合成至关重要.
科学领域:
- 生物技术是生物技术.
- 代谢工程是代谢工程.
- 合成生物学 合成生物学
背景情况:
- 甲基利里4-酸盐 (MEP) 途径对于异oprenoid生物合成至关重要.
- 塔克萨-4,11-二烯是抗癌药物帕克利塔塞尔的前体.
- 提高 taxa-4,11-diene 的产量对于有效的帕克利塔塞尔生产至关重要.
研究的目的:
- 通过优化MEP路径来增强类型-4,11-二烯的生产.
- 为了研究1-deoxy-d-xylulose-5-phosphate synthase (DXS) 过度表达和prenyltransferase融合的作用.
- 为了实现抗癌药物前体生物合成的显著标位改善.
主要方法:
- 基因工程 * Bacillus subtilis * 菌株的基因工程.
- 纳税二烯合成酶 (txs) 基因的基因组整合.
- 过度表达了MEP通路基因.
- 使用法纳西尔酸盐合成酶 (FPPS) -crtE前转移酶的融合.
- 另外表达的1-脱氧-d-西卢-5-酸盐合成酶 (DXS).
主要成果:
- 这种工程菌株的最大分离体-4,11-二烯产量为390 mg/L (26 mg/L/OD<600>).
- 与之前报告的B. subtilis*度相比,这是13倍的增加.
- 证明了DXS和prenyltransferase融合在促进烯生物合成中的关键作用.
结论:
- 增强DXS的过度表达和使用短链prenyltransferase融合是改善 taxa-4,11-diene生产的关键策略.
- 这种代谢工程方法显著提高了帕克利塔塞尔前体的生物合成能力.
- 这项研究为微生物生产有价值的甲烯提供了一个强大的平台.
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