级生物催化剂用于通过聚酸激酶通过ATP自主进行氧醇5'-酸盐合成
Jinnian Wang1, Haoming Zhao1, Shijun Tong2
1Xingzhi College, Zhejiang Normal University, Jinhua 321100, China.
Bioorganic chemistry
|January 21, 2026
概括
这项研究提出了一种新型的ATP独立生物催化方法,用于合成使用合的pyridoxal kinase和polyphosphate kinase的pyridoxal 5'-phosphate (PLP). 无细胞系统实现了95%的PLP产量,提供了一个可持续的工业生物制造解决方案.
科学领域:
- 生物催化和代谢工程生物催化和代谢工程
- 酶学 是一种酶学.
- 工业生物技术 工业生物技术
背景情况:
- 工业酸 (PLP) 生产面临的挑战是低效的化学合成和昂贵的依赖ATP的生物催化.
- PLP是一种必不可少的酶辅因子,对各种生物过程至关重要.
研究的目的:
- 开发一种ATP自主生物催化级联,以实现可持续和高效的PLP合成.
- 通过使用廉价的醇捐赠剂来克服现有的PLP生产方法的局限性.
主要方法:
- 在大肠杆菌中,复合性氧化酶 (PLK) 和多酸酶 (PPK) 的联合表达.
- 开发一个全细胞生物催化剂和一个优化的无细胞系统,使用六甲 (SHMP) 作为ATP再生的基供体.
- 研究反应条件,包括温度,pH值,酶比率和SHMP度.
主要成果:
- 全细胞生物催化剂显示出有限的转化 (约. 25%) 由于质量转移和降解问题.
- 优化的无细胞系统在特定条件下 (45°C,pH6.5,1:3 PLK:PPK比率,25mM SHMP) 实现了95%的高PLP产量.
- 与全细胞系统相比,这代表了3.8倍的增强,突出显示了移除细胞屏障的好处.
结论:
- 为PLP生物合成建立了一个高效的,不依赖ATP的生物催化平台,整合了辅因子再生和级联催化.
- 开发的系统为工业PLP生物制造提供了一个可扩展和经济可行的途径.
- 这项工作表明了聚酸盐驱动的能源回收利用对可持续生物催化物的潜力.
相关概念视频
01:27ATP Driven Pumps I: An Overview
ATP-driven pumps, also known as transport ATPases, are integral membrane proteins. They have binding sites for ATP located on the membrane's cytosolic side and the ion-conducting domain in the transmembrane region. These pumps use the free energy released from ATP hydrolysis to move the solutes across cell membranes against an electrochemical gradient.
There are four main types of ATP-driven pumps - P-type, V-type, F-type, and ABC transporter. All these pumps are of varying complexities and are...
There are four main types of ATP-driven pumps - P-type, V-type, F-type, and ABC transporter. All these pumps are of varying complexities and are...
01:48ATP Synthase: Mechanism
In animals, the mitochondrial F1F0 ATP synthase is the key protein that synthesizes ATP molecules through a complex catalytic mechanism. While the nuclear genome encodes the majority of ATP synthase subunits, the mitochondrial genome encodes some of the enzyme's most critical components. The formation of this multi-subunit enzyme is a complex multi-step process regulated at the level of transcription, translation, and assembly. Defects in one or more of these steps can result in decreased ATP...
01:18ATP Synthase: Structure
ATP synthase or ATPase is among the most conserved proteins found in bacteria, mammals, and plants. This enzyme can catalyze a forward reaction in response to the electrochemical gradient, producing ATP from ADP and inorganic phosphate. ATP synthase can also work in a reverse direction by hydrolyzing ATP and generating an electrochemical gradient. Different forms of ATP synthases have evolved special features to meet the specific demands of the cell. Based on their specific feature, ATP...
01:31ATP Energy Storage and Release
ATP is a highly unstable molecule. Unless quickly used to perform work, ATP spontaneously dissociates into ADP and inorganic phosphate (Pi), and the free energy released during this process is lost as heat. The energy released by ATP hydrolysis is used to perform work inside the cell and depends on a strategy called energy coupling. Cells couple the exergonic reaction of ATP hydrolysis with endergonic reactions, allowing them to proceed.
One example of energy coupling using ATP involves a...
One example of energy coupling using ATP involves a...
01:28ATP and Macromolecule Synthesis
Biological macromolecules are organic compounds, predominantly composed of carbon atoms. The carbon atoms are covalently bonded with hydrogen, oxygen, nitrogen, and other minor elements. There are four major biological macromolecule classes: carbohydrates, lipids, proteins, and nucleic acids.
Most macromolecules are composed of single subunits, or building blocks, called monomers. The monomers combine with each other using covalent bonds to form larger molecules known as polymers.
Conversion of...
Most macromolecules are composed of single subunits, or building blocks, called monomers. The monomers combine with each other using covalent bonds to form larger molecules known as polymers.
Conversion of...
01:19Allosteric Proteins-ATCase
Binding sites linkages can regulate a protein's function. For example, enzyme activity is often regulated through a feedback mechanism where the end product of the biochemical process serves as an inhibitor.
Aspartate transcarbamoylase (ATCase) is a cytosolic enzyme that catalyzes the condensation of L-aspartate and carbamoyl phosphate to N-carbamoyl-L-aspartate. This reaction is the first step in pyrimidine biosynthesis. UTP and CTP, the end products of the pyrimidine synthesis pathway,...
Aspartate transcarbamoylase (ATCase) is a cytosolic enzyme that catalyzes the condensation of L-aspartate and carbamoyl phosphate to N-carbamoyl-L-aspartate. This reaction is the first step in pyrimidine biosynthesis. UTP and CTP, the end products of the pyrimidine synthesis pathway,...