将拥挤的虫转化为多隔间混合微反应器,用于实际的酶催化
Xiaoting Hao1,2, Jing Li1, Bing Zhang1,2
1School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, 030006, China.
Angewandte Chemie (International ed. in English)
|August 30, 2025
概括
我们开发了强大的混合微反应器, 这些微反应器增强了合成生物学应用的催化功能和稳定性.
科学领域:
- 合成生物学和生物工程
- 仿生材料科学
- 化学工程
背景情况:
- 设计具有复杂组织和功能的人造原细胞是合成生物学中的一个关键挑战.
- 现有的方法往往难以实现强大,稳定和高度功能化的原细胞架构.
- 需要多功能平台来创建用于体外应用的先进微反应器.
研究的目的:
- 开发一种基于皮克林乳液的多功能封装方法,用于制造强大的多隔间混合微反应器.
- 将层次分离,分子拥挤,选择性透性和机械稳定性整合到人工原细胞中.
- 证明这些混合微反应器的催化效率和稳定性,用于生物催化和级联反应.
主要方法:
- 使用皮克林乳液封装无膜体.
- 创建具有空间隔离的催化物种的多部分混合微反应器.
- 描述结构特征,包括分子拥挤和封闭效应.
- 在酶动态分辨率和化学酶级反应中测试微反应器的性能.
主要成果:
- 在脂酶驱动反应中实现了1. 9 - 9. 2倍的催化活性增强.
- 证明了高达100°C的强化耐热性和长期耐用性 (1600小时).
- 在复杂的化学酶和多酶级联反应中成功表现出卓越的性能.
- 确定了促进催化功能的关键因素.
结论:
- 基于皮克林乳液的方法为构建先进的人工原细胞提供了多功能平台.
- 由此产生的混合微反应器表现出增强的稳定性,分离性和催化效率.
- 这项工作为设计合成生物学和生物工程中的功能性微反应器提供了一个有前途的策略.
相关概念视频
Catalytically Perfect Enzymes
4.1K
The theory of catalytically perfect enzymes was first proposed by W.J. Albery and J. R. Knowles in 1976. These enzymes catalyze biochemical reactions at high-speed. Their catalytic efficiency values range from 108-109 M-1s-1. These enzymes are also called 'diffusion-controlled' as the only rate-limiting step in the catalysis is that of the substrate diffusion into the active site. Examples include triose phosphate isomerase, fumarase, and superoxide dismutase.
Most enzymes...
Most enzymes...
4.1K
Reduction of Alkenes: Asymmetric Catalytic Hydrogenation
3.4K
Catalytic hydrogenation of alkenes is a transition-metal catalyzed reduction of the double bond using molecular hydrogen to give alkanes. The mode of hydrogen addition follows syn stereochemistry.
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...
3.4K
Reduction of Alkenes: Catalytic Hydrogenation
12.5K
Alkenes undergo reduction by the addition of molecular hydrogen to give alkanes. Because the process generally occurs in the presence of a transition-metal catalyst, the reaction is called catalytic hydrogenation.
Metals like palladium, platinum, and nickel are commonly used in their solid forms — fine powder on an inert surface. As these catalysts remain insoluble in the reaction mixture, they are referred to as heterogeneous catalysts.
The hydrogenation process takes place on the...
Metals like palladium, platinum, and nickel are commonly used in their solid forms — fine powder on an inert surface. As these catalysts remain insoluble in the reaction mixture, they are referred to as heterogeneous catalysts.
The hydrogenation process takes place on the...
12.5K
Microbial Fermentation
292
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...
292
Multi-Step Reactions
7.5K
Chemical reactions often occur in a stepwise fashion involving two or more distinct reactions taking place in a sequence. A balanced equation indicates the reacting species and the product species, but it reveals no details about how the reaction occurs at the molecular level. The reaction mechanism (or reaction path) provides details regarding the precise, step-by-step process by which a reaction occurs. Each of the steps in a reaction mechanism is called an elementary reaction. These...
7.5K
Introduction to Enzymes
19.4K
The use of enzymes by humans dates to 7000 BCE. Humans first used enzymes to ferment sugars and produce alcohol without knowing that this was an enzyme-catalyzed reaction. Wilhelm Kuhne coined the term 'enzyme' in 1877 from the Greek words ‘en’ meaning ‘in’ or ‘within’ and ‘zyme’ meaning ‘yeast.’
Most enzymes are proteins that speed up biochemical reactions without being consumed. Enzymes contain one or more active sites that...
Most enzymes are proteins that speed up biochemical reactions without being consumed. Enzymes contain one or more active sites that...
19.4K


