丁酸盐作为Clostridium acetobutylicum的生长因子
Hyeongmin Seo1, Sofia H Capece1, John D Hill1
1Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, DE, USA.
Metabolic engineering
|October 16, 2024
概括
非有毒的丁酸盐水平刺激了Clostridium acetobutylicum中的细胞过程,作为生长因子. 这项研究澄清了酸盐.
科学领域:
- 微生物学 微生物学
- 细菌的新陈代谢
- 分子生物学分子生物学
背景情况:
- 丁酸盐生物合成途径对于能源产生和微生物竞争至关重要.
- 虽然高水平的丁酸盐是有毒的,但无毒水平对细菌生理学的影响尚不清楚.
研究的目的:
- 为了研究非有毒的丁酸盐度对Clostridium acetobutylicum的生长,健康和分泌的影响.
- 阐明丁酸盐影响细胞过程的机制,包括Spo0A依赖和独立的途径.
主要方法:
- 基因删除3 - 基基甲酸脱酶 (hbd) 取消酸盐合成.
- 使用可诱导酶的Cas9系统进行无标记基因删除.
- 研究了Spo0A的作用,Spo0A是分泌的主调节器,在丁酸盐的作用中发挥了作用.
- 检查了丁酸盐对缺乏psol1等离子体的亚基菌株 (m5) 的影响.
主要成果:
- 非有毒的丁酸盐水平显著影响了C. acetobutylicum的生长,健康和胞.
- 丁酸盐通过Spo0A依赖和独立的机制影响细胞代谢.
- 酸盐的添加增强了非酸盐形成物种Clostridium saccharolyticum的生长.
结论:
- 丁酸盐作为细胞过程的刺激剂,其功能类似于C. acetobutylicum中的生长因子.
- 这些发现表明,在相关的Clostridium物种中,丁酸盐在调节细胞功能方面起着更广泛的作用.
相关概念视频
01:25Lipid Catabolism
1
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...
1
01:20Fates of Pyruvate
8.4K
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...
8.4K
01:23Microbial Fermentation
1
Fermentation is a crucial anaerobic metabolic process that enables microbes to derive energy from sugar without relying on oxygen or an electron transport chain. This process is fundamental to various biological and industrial applications and is classified based on the metabolic products generated.Role of Pyruvate in FermentationPyruvate and its derivatives serve as key electron acceptors in fermentative pathways. The oxidation of NADH to regenerate NAD+ is essential for the continuation of...
1