相关实验视频
Updated: Jan 16, 2026

20:28
A Toolkit to Enable Hydrocarbon Conversion in Aqueous Environments
Published on: October 2, 2012
14.6K
可回收的全细胞生物转化系统用于直接氧化,由强大的细胞内野生型细胞染色体P450BM3催化,由诱分子激活
Yuki Sugai1, Masayuki Karasawa1, Osami Shoji1
1Department of Chemistry, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan.
JACS Au
|September 26, 2025
概括
研究人员开发了一种全细胞生物转化系统,使用诱分子直接将转化为2-propanol. 这种方法实现了高产量和选择性,为基转化提供了稳定和可扩展的方法.
科学领域:
- 生物催化和代谢工程生物催化和代谢工程
- 合成生物学 合成生物学
- 酶工程是什么? 酶工程是什么?
背景情况:
- 细胞染色体P450酶,特别是P450BM3,对于氧化反应至关重要,但通常需要针对特定应用的工程.
- 将气等气态基直接转化为有价值的酒精仍然是生物催化剂的重大挑战.
- 全细胞生物转化系统为传统化学合成提供了一个可持续的替代方案.
研究的目的:
- 开发一种新的诱分子辅助全细胞生物转化系统,用于直接氧化.
- 使用野生型P450BM3进行有效和选择性地将转化为2-propanol.
- 为了证明这种生物催化方法的可扩展性和稳定性.
主要方法:
- 在大肠杆菌中野生类型的P450BM3细胞染色体的表达.
- 开发和应用一个特定的诱分子N-(2-cyclopentylethyl) -prolyl-phenylalanine (2CPE-Pro-Phe).
- 优化整个细胞生物转化条件用于转化.
主要成果:
- 实现了直接氧化的-2-propanol与高选择性 (99%).
- 使用优化的诱分子系统,以29mM的最终度生产2-propanol.
- 与工程突变物相比,野生型P450BM3与诱分子的催化活性和稳定性表现出优异.
结论:
- 诱分子辅助的P450BM3为生物转化提供了一个高度有效和稳定的系统.
- 这种方法使气态基在温和条件下可进行可扩展的转化.
- 使用稳定的野生类型酶比工程变体提供了优势,克服了关闭问题的问题.
相关概念视频
Bioremediation
22.0K
Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.
22.0K
Hydroboration-Oxidation of Alkenes
11.1K
In addition to the oxymercuration–demercuration method, which converts the alkenes to alcohols with Markovnikov orientation, a complementary hydroboration-oxidation method yields the anti-Markovnikov product. The hydroboration reaction, discovered in 1959 by H.C. Brown, involves the addition of a B–H bond of borane to an alkene giving an organoborane intermediate. The oxidation of this intermediate with basic hydrogen peroxide forms an alcohol.
11.1K
Drug Biotransformation: Overview
3.7K
Pharmaceutical substances known as xenobiotics are predominantly lipophilic and nonionized. This enables them to permeate lipid bilayers, such as cell membranes, and interact with intracellular target receptors. Lipophilic drugs have an advantage in crossing biological barriers and reaching their intended sites of action. However, lipophilic drugs often have a restricted capacity for renal expulsion or elimination from the body. When these drugs enter the kidneys and undergo glomerular...
3.7K
Drug Metabolism: Phase I Reactions
4.6K
A phase I reaction is a biochemical process that introduces a functionally reactive polar group to a substance. This transformation predominantly occurs in the liver, facilitated by the cytochrome P450 system of hemoproteins situated in the lipophilic endoplasmic reticulum of cells. The metabolite generated through this process can have varying polarities. If it is sufficiently polar, it can be easily excreted in the urine due to its water compatibility. However, if the metabolite is nonpolar,...
4.6K
Lipid Catabolism
857
Triglycerides serve as crucial long-term energy storage molecules in microorganisms, providing a dense source of metabolic energy. Their breakdown is mediated by lipases, which hydrolyze triglycerides into glycerol and free fatty acids. Each of these components follows distinct metabolic pathways, ultimately contributing to ATP synthesis and cellular energy homeostasis.Glycerol MetabolismGlycerol, released from triglyceride hydrolysis, is phosphorylated by glycerol kinase to form...
857
Reduction of Alkenes: Asymmetric Catalytic Hydrogenation
3.8K
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...
3.8K

