We present and evaluate a new and potentially efficient route for enzyme-mediated Diels-Alder reactions, utilizing general acid-base catalysis. The viability of employing the active site of ketosteroid isomerase is demonstrated.
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http://dx.doi.org/10.1039/c2cc31502e | DOI Listing |
Chem Sci
January 2025
Department of Molecules and Materials, Faculty of Science and Technology, University of Twente Drienerlolaan 5 Enschede 7522 NH The Netherlands.
Network measures have proven very successful in identifying structural patterns in complex systems (, a living cell, a neural network, the Internet). How such measures can be applied to understand the rational and experimental design of chemical reaction networks (CRNs) is unknown. Here, we develop a procedure to model CRNs as a mathematical graph on which network measures and a random graph analysis can be applied.
View Article and Find Full Text PDFACS Cent Sci
November 2024
Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States.
Confinement of molecules occurs ubiquitously in nature and fundamentally affects their properties and reactions. Developing synthetic confinement systems capable of precise modulation of chemical reactions is critical to understanding the underlying mechanisms and to promoting numerous applications including biosensing. However, current nanoconfinement systems often require sophisticated fabrication and operation.
View Article and Find Full Text PDFFood Res Int
November 2024
Department of Technique and Food Development, Institute of Human Nutrition Sciences, Warsaw University of Life Sciences, 02-776 Warsaw, Poland. Electronic address:
Phytosterols represent a diverse and complex category of lipophilic bioactive compounds, exhibiting excellent pro-healthy properties. However, their consumption in daily diets is insufficient, and their application in food production is hindered by challenges such as low water solubility, high reactivity, and rapid degradation. The adoption of different protein or their structural modification as hydrolysates as wall material into microencapsulation techniques can be associated with improved solubility, enhanced bioaccessibility, increased bioavailability, and an extension of shelf life.
View Article and Find Full Text PDFSmall Methods
November 2024
Sanbo Brain Hospital, Capital Medical University, Laboratory for Clinical Medicine, Capital Medical University, Beijing, 100070, China.
Live-cell imaging of RNA in specific subcellular compartments is essential for elucidating the rich repertoire of cellular functions, but it has been limited by a lack of simple, precisely controlled methods. Here such an approach is presented via the combination of hybridization chain reaction and spatially restricted enzymatic activation with organelle-targeted delivery. The system can localize engineered DNA hairpins in the mitochondria, where target RNA-initiated chain reaction of hybridization events is selectively activated by a specific enzyme, enabling amplified RNA imaging with high precision.
View Article and Find Full Text PDFMethods Mol Biol
November 2024
Department of Biochemistry, University of Oxford, Oxford, UK.
Fluorescence anisotropy is a powerful technique, widely used for investigating ligand-macromolecule binding and high-throughput screens for drugs. Here, we employ fluorescence anisotropy to quantitatively study the activity of exoribonucleases exemplified by the Xrn2 enzyme. Recording changes in the fluorescence anisotropy over time allows real-time detection of enzymatic activity and provides a framework that can be tailored to particular questions.
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