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Regulation of Metabolism01:19

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Cellular needs and conditions vary from cell to cell and change within individual cells over time. For example, the required enzymes and energetic demands of stomach cells are different from those of fat storage cells, skin cells, blood cells, and nerve cells. Furthermore, a digestive cell works much harder to process and break down nutrients during the time that closely follows a meal compared with many hours after a meal. As these cellular demands and conditions vary, so do the amounts and...
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The pentose phosphate pathway (PPP) operates in parallel with glycolysis, facilitating the metabolism of both pentoses and glucose. This pathway consists of two distinct phases: the oxidative and non-oxidative phases. While it does not directly generate ATP, the intermediates formed during the process can integrate into glycolysis, contributing to cellular energy metabolism when required.Oxidative Phase: NADPH ProductionThe oxidative phase of the pentose phosphate pathway is primarily...
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Genetic Engineering of an Unconventional Yeast for Renewable Biofuel and Biochemical Production
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代谢工程的代谢工程

Cui Zhao1,2,3, Xi-Hui Wang1,2,3, Xin-Yao Lu1,2,3

  • 1The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China.

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概括
此摘要是机器生成的。

这项研究对Candida glycerinogenes进行了基拉尼生产的工程设计,从基纤维素生物质中获得高位数. 开发的系统将碳流转向,使这种有价值的芳香化合物的可持续合成成为可能.

关键词:
坎迪达糖原体 (Candida glycerinogenes) 是一种糖原体.杰拉尼奥尔 (Geraniol) 是一个德国人.石纤维素生物质的生物质.代谢工程是代谢工程.氧化糖的新陈代谢

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科学领域:

  • 代谢工程是代谢工程.
  • 合成生物学 合成生物学
  • 工业生物技术 工业生物技术

背景情况:

  • 格拉尼奥尔是一种有价值的天然产品,广泛用于芳香行业.
  • 现有的生产方法面临来自内源代谢途径的竞争,例如酵母菌的ergosterol途径.
  • 从可再生资源中可持续生产日醇是非常可取的.

研究的目的:

  • 开发一种转录因子介导的系统,用于自主调节厄戈斯特醇代谢.
  • 为了将碳流转向Candida glycerinogenes中的geraniol合成.
  • 为了实现从基纤维素生物质中可持续生产日醇.

主要方法:

  • 设计了一种转录因子介导的ergosterol反系统,以调节ergosterol代谢.
  • 修改了对厄戈斯特醇反应的促进剂和优化的转录因子表达.
  • 在Candida glycerinogenes中构建和优化了一条氧化糖同化通路,激活酸通路.

主要成果:

  • 通过代谢工程和促进物优化,通过代谢工程和促进物优化实现了531.7毫克L-1的基拉尼标位.
  • 成功地从林氏纤维素生物质 (模拟的小麦和甘包水解剂) 制造出基拉尼奥尔.
  • 在5L生物反应器中获得高基拉尼标位 (高达1091.6毫克L-1在葡萄糖上) 和产量 (高达59.1毫克g-1DCW).

结论:

  • 坎迪达糖原体可以被设计为高效的日醇生产.
  • 开发的转录因子介导系统有效地重定向代谢流量,以增强基拉尼奥尔合成.
  • 这项研究表明,从纤维素生物质中生产日拉尼和其他单烯的潜力,提供了一个可持续的生物生产平台.