利用工程设计的Pseudomonas putida微细胞,将有机酸生物转化为短链甲基基
Ekaterina Kozaeva1, Manuel Nieto-Domínguez1, Kent Kang Yong Tang1
1The Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Kongens Lyngby, 2800, Denmark.
ACS synthetic biology
|January 3, 2025
概括
这项研究探讨了使用工程细菌生物基生产的甲基基. 在Pseudomonas putida小细胞中优化的途径成功地将有机酸转化为有价值的短链子.
科学领域:
- 生物技术是生物技术.
- 合成生物学 合成生物学
- 微生物工程 微生物工程
背景情况:
- 甲基基是重要的工业化学品,主要通过依赖石油的方法生产.
- 越来越需要可持续的,基于生物的替代品来代替传统的化学合成.
研究的目的:
- 开发短链甲基 (乙,布坦,2-坦) 的生物基生产途径.
- 为了设计耐溶剂的细菌*Pseudomonas putida*进行高效的子生物合成.
- 为了利用工程迷你细胞作为无细胞生物催化剂用于生产.
主要方法:
- 适应*Pseudomonas putida*用于全细胞生物催化和小细胞生产.
- 使用来自*Clostridium acetobutylicum*和*Escherichia coli*的酶选择和优化生物合成途径.
- 使用有机酸 (乙酸,酸,酸) 作为碳基质.
主要成果:
- 取得了成功的乙,布他和2-坦的生物合成.
- 工程 *P. putida* 迷你细胞有效地将原料转化为目标甲基.
- 途径优化涉及选酶变体和表达系统 (构成性和可诱导性).
结论:
- 使用工程P. putida*证明了生物基甲基生产的可行性.
- 突出了小细胞作为生产具有挑战性的化学品的强大平台的潜力.
- 强调了主机工程和途径优化的协同作用,以实现可持续的生物工艺开发.
相关概念视频
01:25Lipid Catabolism
Triglycerides serve as crucial long-term energy storage molecules in microorganisms, providing a dense source of metabolic energy. Their breakdown is mediated by lipases, which hydrolyze triglycerides into glycerol and free fatty acids. Each of these components follows distinct metabolic pathways, ultimately contributing to ATP synthesis and cellular energy homeostasis.Glycerol MetabolismGlycerol, released from triglyceride hydrolysis, is phosphorylated by glycerol kinase to form...
01:30Environmental Applications of Microorganisms
1
Microorganisms play a pivotal role in maintaining ecosystem balance by recycling essential elements such as carbon, nitrogen, and phosphorus, as well as supporting processes like bioremediation, wastewater treatment, and biofuel production.Microbes in Elemental CyclesIn the carbon cycle, microorganisms decompose organic matter, releasing carbon dioxide via aerobic respiration. This carbon dioxide is subsequently used by photosynthetic organisms to synthesize organic compounds, closing the...
1
00:46Bioremediation
18.2K
Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.
18.2K
01:20Fates of Pyruvate
8.3K
Pyruvate is the end product of glycolysis, where glucose is oxidized to pyruvate, simultaneously reducing NAD+ to NADH. Two molecules of ATP are also produced by substrate-level phosphorylation.
In aerobic organisms, pyruvate is metabolized via the citric acid cycle to produce reduced coenzymes NADH and FADH2. These coenzymes are then oxidized in the electron transport chain to produce ATP and, in the process, regenerate the NAD+ and FAD. As seen in some cell types and organisms, fermentation...
In aerobic organisms, pyruvate is metabolized via the citric acid cycle to produce reduced coenzymes NADH and FADH2. These coenzymes are then oxidized in the electron transport chain to produce ATP and, in the process, regenerate the NAD+ and FAD. As seen in some cell types and organisms, fermentation...
8.3K