路径模块效率的细分和评估:量化方法来监测和克服西洛斯到乙醇路径中不断变化的瓶
Xiao Yin Ma1, Bryan Coleman1, Ponnandy Prabhu2
1Department of Chemical Engineering, University of Michigan, Ann Arbor, MI 48109, United States; Catalysis Science and Technology Institute, University of Michigan, Ann Arbor, MI 48109, United States.
Bioresource technology
|January 26, 2024
概括
开发可再生燃料需要工程微生物来高效地发酵西洛斯. 一种新的方法,路径模块效率的细分和评估 (SEPME),快速识别和消除代谢瓶,以优化从纤维纤维素生物质中生产乙醇.
科学领域:
- 代谢工程是代谢工程.
- 合成生物学 合成生物学
- 生物技术是生物技术.
背景情况:
- 有效地将纤维素生物质转化为可再生燃料至关重要.
- 由工程微生物发酵的西洛是生物燃料生产中的一个关键瓶.
研究的目的:
- 开发一种快速和代的方法,以优化微生物菌株的克西洛斯发酵.
- 为了识别和消除基-乙醇路径中的代谢瓶.
主要方法:
- 开发了途径模块效率 (SEPME) 的细分和评估,用于途径分析.
- 将代谢途径细分为上游 (氧化同化) 和下游 (酸途径,糖解,发酵) 模块.
- 量化模块效率,分析控制系数,反应速率和副产品度.
主要成果:
- 通过SEPME,可以快速识别和消除代谢瓶.
- 随着应变工程的进展,观察到瓶在模块内和模块之间发生转移.
- 对SEPME的代应用导致了一种微生物菌株,显著改善了酸盐到乙醇的产量,接近理论极限.
结论:
- SEPME是加速优化生物燃料生产微生物菌株的有效策略.
- 了解动态瓶转移对于高效的代谢工程至关重要.
- 这种方法有助于开发高生产率的微生物细胞工厂,用于可再生燃料.
相关概念视频
Glycolysis: Preparatory Phase
13.4K
In cellular metabolism (the complete breakdown of glucose to extract energy), glycolysis is the first step. Glycolysis takes place in the cytoplasm of both prokaryotic and eukaryotic cells. Glucose enters heterotrophic cells in two ways. One method is through secondary active transport, where the transport takes place against the glucose concentration gradient. The other mechanism uses a group of integral proteins called GLUT proteins, also known as glucose transporter proteins. These...
13.4K
Fates of Pyruvate
8.5K
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...
8.5K
What is Glycolysis?
164.9K
Overview
Cells make energy by breaking down macromolecules. Cellular respiration is the biochemical process that converts "food energy" (from the chemical bonds of macromolecules) into chemical energy in the form of adenosine triphosphate (ATP). The first step of this tightly regulated and intricate process is glycolysis. The word glycolysis originates from the Latin glyco (sugar) and lysis (breakdown). Glycolysis serves two main intracellular functions: generating ATP and generating...
Cells make energy by breaking down macromolecules. Cellular respiration is the biochemical process that converts "food energy" (from the chemical bonds of macromolecules) into chemical energy in the form of adenosine triphosphate (ATP). The first step of this tightly regulated and intricate process is glycolysis. The word glycolysis originates from the Latin glyco (sugar) and lysis (breakdown). Glycolysis serves two main intracellular functions: generating ATP and generating...
164.9K
Energy-requiring Steps of Glycolysis
163.6K
Glucose is the source of nearly all energy used by organisms. The first step of converting glucose into usable energy is called glycolysis. Glycolysis occurs in the cytosol of the cell over two phases: an energy-requiring phase and an energy-releasing phase. Over the first three steps, glucose is converted into different forms and attached to two phosphate groups donated by two ATP molecules, resulting in an unstable sugar. In the next two stages, the unstable sugar splits into two sugar...
163.6K


