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Directed Evolution's Selective Use of Quantum Tunneling in Designed Enzymes─A Combined Theoretical and Experimental Study.
J Phys Chem B
January 2025
Department of Chemistry and Biochemistry, University of Arizona, 1306 East University Boulevard, Tucson, Arizona 85721, United States.
Natural enzymes are powerful catalysts, reducing the apparent activation energy for reactions and enabling chemistry to proceed as much as 10 times faster than the corresponding solution reaction. It has been suggested for some time that, in some cases, quantum tunneling can contribute to this rate enhancement by offering pathways through a barrier inaccessible to activated events. A central question of interest to both physical chemists and biochemists is the extent to which evolution introduces mechanisms below the barrier, or tunneling mechanisms.
View Article and Find Full Text PDFMembrane Proteins in Nanodiscs: Methods and Applications.
ChemMedChem
January 2025
Nankai University, State Key Laboratory of Elemento-Organic Chemistry and Department of Chemical Biology, College of Chemistry, 94 Weijin Road, 300071, Tianjin, CHINA.
Membrane proteins, a principal class of drug targets, play indispensable roles in various biological processes and are closely associated with essential life functions. Their study, however, is complicated by their low solubility in aqueous environments and distinctive structural characteristics, necessitating a suitable native-like environment for molecular analysis. Nanodisc technology has revolutionized this field, providing biochemists with a powerful tool to stabilize membrane proteins and significantly enhance their research possibilities.
View Article and Find Full Text PDFChronic kidney disease (CKD) is a common clinical condition with significant health risks for patients and is widely recognised as a major public health concern. Laboratory medicine plays a crucial role in both diagnosing and managing CKD, as diagnosis and staging rely on estimated glomerular filtration rate (GFR) and evaluating albuminuria (or proteinuria). It was evident that the laboratory assessment of CKD in Malaysia is not standardised.
View Article and Find Full Text PDFThe Somogyi hypothesis: a parallelism with Michael Somogyi's life.
Hormones (Athens)
December 2024
Department of Endocrinology and Nutrition, Hospital Universitario Central de Asturias/University of Oviedo, Oviedo, Spain.
Michael Somogyi (Somogyi Mihály, 1883-1971) was a Hungarian biochemist who developed his scientific career in Europe and, primarily, the United States. He gave the name to the eponymous Somogyi effect or Somogyi hypothesis (in short, rebound hyperglycemia after insulin-induced hypoglycemia, particularly nocturnal), which was an axiom in the treatment of diabetes for decades. Although it is currently debated whether the Somogyi hypothesis is a real or relevant phenomenon in patients with diabetes, Somogyi's other significant career achievements are often overlooked.
View Article and Find Full Text PDFJohn Brooksby was an outstanding Scottish veterinary virologist who worked at the Pirbright Institute (Pirbright) for 40 years, including 16 as the institute's director. He devised quantitative methods for measuring neutralising antibodies and perfected a complement fixation test for the diagnosis, typing and strain differentiation of foot and mouth disease (FMD), especially when combined with neutralisation. He identified four of the seven types of FMD virus (FMDV) and many subtypes.
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