In a two-enzyme system, successive action of hydroperoxide lyase from mint and yeast alcohol-dehydrogenase catalyses the conversion of hydroperoxy linolenic acid to hexenol. Kinetic behaviour was investigated separately for each enzyme: a lumped model based on the Michaelis-Menten approach shows the fate of the reactants in the system.
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http://dx.doi.org/10.1007/s10529-005-3896-x | DOI Listing |
Biology (Basel)
January 2025
Division of Thoracic Surgery, Cantonal Hospital Lucerne, 6000 Lucerne, Switzerland.
In 2001, two enzyme-encoding genes were recognized in the fruit fly . The genetic material, labeled and , encodes ribonuclease-type enzymes with slightly diverse target substrates. The human orthologue is .
View Article and Find Full Text PDFSheng Wu Gong Cheng Xue Bao
January 2025
School of Biological and Pharmaceutical Engineering, West Anhui University, Lu'an 237012, Anhui, China.
Traditional Chinese medicine of has been utilized in China for thousands of years. Its primary active compound, polydatin, exhibits a variety of pharmacological effects including the regulation of glucose and lipid metabolism, suppression of cough and asthma, as well as antibacterial and anti-inflammatory properties. However, conventional methods for polydatin production are inadequate to satisfy the market demand.
View Article and Find Full Text PDFInt J Biol Macromol
January 2025
Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science & Technology, Tianjin 300457, China. Electronic address:
Dihydrotestosterone (DHT) is a valuable steroid drug with widespread clinical applications, but traditional chemical synthesis is environmentally harmful and requires complex reaction conditions. This study introduces a one-step microbial transformation method for the production of DHT from inexpensive phytosterols (PS) using engineered Mycolicibacterium neoaurum (MNR). The heterologous expression of 5α-reductase (5α-R) and 17β-hydroxysteroid dehydrogenase (17β-HSD) in MNR enabled the efficient conversion of PS to DHT.
View Article and Find Full Text PDFAnalyst
December 2024
Department of Pharmaceutical Analysis, School of Pharmaceutical Sciences, Peking University, Beijing 100191, P. R. China.
Metal ions and their interactions with biomolecules play an important role in human health. However, optical detectors commonly used for HPCE cannot directly detect metal ions without UV absorption. To make up for the shortcomings of existing HPCE detectors, a new universal HPCE detection system called an interface-induced current detector (IICRD) was constructed previously, with no need for derivatization procedures or complex instrumental modifications.
View Article and Find Full Text PDFAdv Mater
December 2024
Department of Radiology, Tongji Hospital, Shanghai Frontiers Science Center of Nanocatalytic Medicine, The Institute for Biomedical Engineering & Nano Science, School of Medicine, Tongji University, Shanghai, 200065, China.
Enzymatic catalysis, particularly multi-enzyme cascade catalytic, is often limited by the spatial and temporal separation of enzymes and their signal substrates. Herein, a facile method for producing a spatiotemporal proximity-enhanced biocatalytic cascade system is introduced by encasing enzymes within metal-organic frameworks (MOFs) that are modulated with sulfonic acid-functionalized signal substrates. The modulated behavior relies on the sulfonic acid groups coordinated with Zn.
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