生物催化酶的C-H化通过非海姆铁酶的定向演化而实现
Liu-Peng Zhao1, Binh Khanh Mai2, Lida Cheng1
1Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, USA.
Nature synthesis
|February 10, 2025
概括
研究人员设计了一种酶用于酶选择性C(sp3) -H化,创造了一种用于合成有机化合物的新型生物催化方法. 这一突破扩大了对不对称的C-F键形成的酶能力.
科学领域:
- 酶学 是一种酶学.
- 生物催化剂是一种生物催化剂.
- 合成生物学 合成生物学
- 有机化学 有机化学
背景情况:
- 由于自然化酶的稀缺性和生物活性分子中有机的普遍性,开发酶性C-F键的形成至关重要.
- 催化不对称的C ((sp3) -H化是合成化学的一个重大挑战,之前试图将非海姆Fe化酶转化为化酶是不成功的.
研究的目的:
- 为了重新利用一种天然的酶来进行化.
- 设计一种高度活性和选择性的生物催化剂,用于形成不对称的C-F键.
主要方法:
- 一种植物衍生酶的重定位,即1-aminocyclopropane-1-carboxylic acid oxidase (ACCO) 的重定位.
- 定向进化以增强化活性和选择性.
- 计算研究以阐明反应机制.
主要成果:
- 工程ACCO变种 (ACCOCHF) 显示活动增加了200倍.
- 在C ((sp3) -H化中获得高化学选择性和优异的反选择性.
- 鉴定了距离Fe中心的有益突变,突出了基质道工程.
- 计算分析显示了激进反弹步骤的低激活屏障.
结论:
- 重新使用的ACCO是用于非自然的化C ((sp3) -H化而选择的可行平台.
- 定向进化和基质道工程是优化酶的有效策略.
- 这项工作为不对称的C-F键形成提供了一个新的生物催化方法,扩大了酶的催化谱.
![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
01:07Catalytically Perfect Enzymes
3.9K
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...
3.9K
02:17Reduction of Alkenes: Asymmetric Catalytic Hydrogenation
3.2K
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...
3.2K