对电催化[Cp*Rh(bpy) Cl]+介导的NADH再生的实验性见解
Jonas Meyer1,2, Manuela Romero1,2, Jorg Thöming1,2
1Chemical Process Engineering Group (CVT), Leobener Strasse 6, 28359, Bremen, Germany.
Scientific reports
|December 16, 2023
概括
使用特定介质的NADH的电化学再生显著提高了酶活性NADH的产量,使酶反应更容易获得和更具成本效益.
科学领域:
- 生物化学 生物化学
- 电化学 电化学 电化学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 尼古丁胺胺氨基二核酸 (NADH) 对于许多酶反应至关重要.
- 高的NADH成本限制了其广泛的应用.
- 有效的NADH再生是扩大酶体过程的关键.
研究的目的:
- 分析NADH的经过中介电化学再生.
- 为了确定NAD+电化学还原的最佳参数.
- 为了研究非活性NADH还原产品的氧化.
主要方法:
- 循环电压计. 循环电压计.
- 潜在静态测量.潜在静态测量.
- 在不同pH值,电极电位和电解质溶液下进行系统分析.
主要成果:
- 使用[Cp*Rh(bpy) Cl]+介导的电化学再生使活性NADH从15%增加到99%.
- 在NADH再生方面达到高达86%的法拉达效率.
- 澄清了介质[Cp*Rh(bpy) Cl]+的催化机制和条件.
结论:
- 介导电化学再生对于产生活性NADH非常有效.
- 该研究提供了对NADH再生机制和参数的关键见解.
- 这种方法显著提高了依赖NADH的酶反应的可行性.
![Protein Film Infrared Electrochemistry Demonstrated for Study of H2 Oxidation by a [NiFe] Hydrogenase](/_next/image?url=https%3A%2F%2Fcloudfront.jove.com%2FCDNSource%2Fteasers%2F55858.jpg&w=3840&q=50)
相关概念视频
01:26Photochemical Electrocyclic Reactions: Stereochemistry
1.8K
The absorption of UV–visible light by conjugated systems causes the promotion of an electron from the ground state to the excited state. Consequently, photochemical electrocyclic reactions proceed via the excited-state HOMO rather than the ground-state HOMO. Since the ground- and excited-state HOMOs have different symmetries, the stereochemical outcome of electrocyclic reactions depends on the mode of activation; i.e., thermal or photochemical.
Selection Rules: Photochemical Activation
Selection Rules: Photochemical Activation
1.8K
01:26Thermal and Photochemical Electrocyclic Reactions: Overview
2.3K
Electrocyclic reactions are reversible reactions. They involve an intramolecular cyclization or ring-opening of a conjugated polyene. Shown below are two examples of electrocyclic reactions. In the first reaction, the formation of the cyclic product is favored. In contrast, in the second reaction, ring-opening is favored due to the high ring strain associated with cyclobutene formation.
2.3K
01:29Role of Reduced Coenzymes NADH and FADH₂
11.7K
The energy released from the breakdown of the chemical bonds within nutrients can be stored either through the reduction of electron carriers or in the bonds of adenosine triphosphate (ATP). In living systems, a small class of compounds functions as mobile electron carriers, molecules that bind to and shuttle high-energy electrons between compounds in pathways. The principal electron carriers that will be considered originate from the B vitamin group and are derivatives of nucleotides; they are...
11.7K
01:17Thermal Electrocyclic Reactions: Stereochemistry
2.0K
The stereochemistry of electrocyclic reactions is strongly influenced by the orbital symmetry of the polyene HOMO. Under thermal conditions, the reaction proceeds via the ground-state HOMO.
Selection Rules: Thermal Activation
Conjugated systems containing an even number of π-electron pairs undergo a conrotatory ring closure. For example, thermal electrocyclization of (2E,4E)-2,4-hexadiene, a conjugated diene containing two π-electron pairs, gives trans-3,4-dimethylcyclobutene.
Selection Rules: Thermal Activation
Conjugated systems containing an even number of π-electron pairs undergo a conrotatory ring closure. For example, thermal electrocyclization of (2E,4E)-2,4-hexadiene, a conjugated diene containing two π-electron pairs, gives trans-3,4-dimethylcyclobutene.
2.0K
01:34The Z-Scheme of Electron Transport in Photosynthesis
10.2K
The light reactions of photosynthesis assume a linear flow of electrons from water to NADP+. During this process, light energy drives the splitting of water molecules to produce oxygen. However, oxidation of water molecules is a thermodynamically unfavorable reaction and requires a strong oxidizing agent. This is accomplished by the first product of light reactions: oxidized P680 (or P680+), the most powerful oxidizing agent known in biology. The oxidized P680 that acquires an electron from the...
10.2K