相关实验视频
Updated: Jun 14, 2026

09:58
Light-driven Enzymatic Decarboxylation
Published on: May 22, 2016
在不对称的催化-动态减小运动分辨率进入 (S-profens) 中使用来自archael超热的强大的脱酶
Jacob A Friest1, Yukari Maezato, Sylvain Broussy
1Department of Chemistry, University of Nebraska, Lincoln, Nebraska 68588, USA.
Journal of the American Chemical Society
|April 10, 2010
概括
这项研究引入了来自Sulfolobus solfataricus的高效酒精脱酶 (SsADH-10),用于不对称的合成. 该酶使烯型化物具有高度选择性的动态还原动力学分辨率 (DYRKR),显示出广泛的基质耐受性和可回收性.
科学领域:
- 生物催化和不对称合成
- 酶工程与应用 酶工程与应用
- 超热友的古生物生物化学 生物化学
背景情况:
- 非类固醇抗炎药物 (NSAIDs) 和相关化合物的基隆合成至关重要.
- 酶方法为酶选择性合成提供了可持续的途径.
- 高热性酶具有工业应用的独特特性.
研究的目的:
- 开发一种有效的异质表达系统,用于Sulfolobus solfataricus ADH-10 (SsADH-10).
- 为了利用SsADH-10对2-arylpropanal (烯类型) 基质的动态还原运动分辨率 (DYRKR).
- 在不对称合成中研究酶的立体选择性,基质范围和可回收性.
主要方法:
- 这是一种Sulfolobus solfataricus ADH-10的异质表达.
- 通过布丘瓦尔德-哈特维格α-arylation和随后的减少合成2-arylpropanal基质.
- 在80°C的温度下使用SsADH-10,催化NADH和酸盐缓冲器的酶动态还原动态分辨率 (DYRKR).
- 在模型中预测基质耐受性.
主要成果:
- SsADH-10在DYRKR.中表现出高效的异质表达和活性.
- 对于9个阿里尔侧链,包括主要NSAIDs的9个,获得了高的enantioselectivities (ee's>90%).
- 在经过测试的烯型基质中观察到对 (S) 反极的偏好.
- 该酶表现出广泛的基质耐受性,并且可以通过热循环循环回收,而不会失去酶选择性.
结论:
- SsADH-10是一种用于不对称合成的新型生物催化剂,特别有效于烯型化物的DYRKR.
- 这项工作代表了Sulfolobus超热友性脱酶在不对称合成和DYRKR的首次应用.
- SsADH-10的稳定性和可回收性突出显示了古老酶在可持续性合合成中的潜力.
更多相关视频
相关概念视频
Reduction of Alkenes: Asymmetric Catalytic Hydrogenation
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...
Diversity of Archaea IV
Hyperthermophilic archaea are a group of extremophiles thriving at temperatures above 80°C, often in hydrothermal vents and volcanic soils where conditions surpass the boiling point of water. At such temperatures, proteins, membranes, and DNA in most organisms degrade, but hyperthermophiles have evolved remarkable adaptations to maintain stability and function.Unique Cellular FeaturesHyperthermophilic membranes are composed of a monolayer of biphytanyl tetraether lipids, which resist thermal...
Diversity of Archaea III
Crenarchaeota, a prominent phylum of Archaea, is remarkable for its ability to thrive in extreme environments characterized by high temperatures and acidity. These microorganisms inhabit sulfuric hot springs, volcanic systems, and submarine hydrothermal vents, where temperatures often exceed 100°C. The unique adaptations of Crenarchaeota not only allow survival under such extreme conditions but also provide insights into the mechanisms of life in primordial Earth-like environments.Morphological...
Reduction of Alkynes to cis-Alkenes: Catalytic Hydrogenation
Introduction
Like alkenes, alkynes can be reduced to alkanes in the presence of transition metal catalysts such as Pt, Pd, or Ni. The reaction involves two sequential syn additions of hydrogen via a cis-alkene intermediate.
Like alkenes, alkynes can be reduced to alkanes in the presence of transition metal catalysts such as Pt, Pd, or Ni. The reaction involves two sequential syn additions of hydrogen via a cis-alkene intermediate.
Reduction of Alkenes: Catalytic Hydrogenation
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 surface of...
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 surface of...
Heterogeneous Catalysis
Heterogeneous catalysis involves a catalyst in a different phase from the reactants. It is a process where the catalyst and the reactants are in distinct phases, typically solid and gas or liquid.Most heterogeneous catalysts are metals, metal oxides, or acids. The list includes transition metals like iron (Fe), cobalt (Co), nickel (Ni), palladium (Pd), platinum (Pt), chromium (Cr), manganese (Mn), tungsten (W), silver (Ag), and copper (Cu). These metals possess partially vacant d orbitals that...
![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)
