相关实验视频

Updated: Sep 10, 2025

Enzymatic Cascade Reactions for the Synthesis of Chiral Amino Alcohols from L-lysine

Enzymatic Cascade Reactions for the Synthesis of Chiral Amino Alcohols from L-lysine

Published on: February 16, 2018

鉴定胺脱碳酶及其多酶级联系统,以实现高成本的癌素生物合成

Man Zhao^1,2, Zhenhao Jiang^1,2, Mengying Yu^1,2

¹Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, No. 18 Chaowang Road, Hangzhou, 310014 Zhejiang Province People's Republic of China.

|August 27, 2025

概括

这项研究提出了一种新的多酶级联,用于从L-histidine和β-alanine直接生物合成carcinine. 优化的系统实现了报告中最高的转化率,为经济高效的工业素生产铺平了道路.

科学领域:

生物催化和代谢工程
合成生物学
生物技术

背景情况:

素是一种具有抗氧化和抗糖化特性的生物活性化合物,对制药和化品有价值.
目前的癌素生产方法有限,需要新的高效的生物合成策略.

研究的目的:

使用多酶级联系统开发癌的直接生物合成策略.
为了优化关键酶的表达和活性,西丁脱碳酶 (PphHDC) 和SGE.
建立一个具有成本效益和可扩展的工业素生产方法.

主要方法:

鉴定和优化一种高效的胺脱碳酶 (PphHDC).
通过向量优化和感应参数调整,增强BPH-2菌株中可溶性PphHDC表达.
在单细胞,双细胞和多酶级联系统中将PphHDC与SGE酶集成.
使用N端DsbA标签 (SGE-D_N) 进行SGE的工程,以提高溶解度.

主要成果:

对PphHDC表达 (37°C,0. 1毫米IPTG,8小时诱导) 和活性 (pH 6. 0;30°C,5毫米Ca2+) 的最佳条件.
使用纯化可溶PphHDC和SGE-D_N的多酶级联系统显示出最高的效率.
在24小时内达到4. 29毫米的最大癌素标位,产量为0. 18毫米/ 小时,这是L- 胺和β- 氨酸的最高转化值.

结论:

已经建立了一个强大的和高效的多酶级联系统,用于直接的癌生物合成.
这些发现为具有成本效益的工业生产提供了基础.
异质表达系统的优化对于平衡蛋白质溶解性和生物催化效率至关重要.

关键词:

癌素酶性活动基因组胺多种酶级联 PphHDC 的情况全细胞催化

更多相关视频

Measurement of Heme Synthesis Levels in Mammalian Cells

Measurement of Heme Synthesis Levels in Mammalian Cells

Published on: July 9, 2015

Metabolic Pathway Confirmation and Discovery Through 13C-labeling of Proteinogenic Amino Acids

Metabolic Pathway Confirmation and Discovery Through 13C-labeling of Proteinogenic Amino Acids

Published on: January 26, 2012

相关概念视频

Allosteric Proteins-ATCase

Allosteric 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...

Amino Acid Biosynthetic Pathways

Amino Acid Biosynthetic Pathways

Amino acid biosynthesis is essential for cell growth, protein synthesis, and metabolic regulation. Cells generate essential and non-essential amino acids from metabolic intermediates to sustain vital biological functions. These intermediates originate from key metabolic pathways: glycolysis, the tricarboxylic acid (TCA) cycle, and the pentose phosphate pathway. Important precursors include α-ketoglutarate, pyruvate, oxaloacetate, phosphoenolpyruvate, and erythrose-4-phosphate, which...