Poncelet, Martin Driesschaert, Benoit Tseytlin, Oxana Tseytlin, Mark Eubank, Timothy D Khramtsov, Valery V
Published in
Bioorganic & medicinal chemistry letters
Tetrathiatriarylmethyl (TAM) radicals represent soluble paramagnetic probes for biomedical electron paramagnetic resonance (EPR)-based spectroscopy and imaging. There is an increasing demand in the development of multifunctional, biocompatible and targeted trityl probes hampered by the difficulties in derivatization of the TAM structure. We propose...
Probst, Sebastian Ranjan, Vishal Ansel, Quentin Heeres, Reinier Albanese, Bartolo Albertinale, Emanuele Vion, Denis Esteve, Daniel Glaser, Steffen J Sugny, Dominique
...
Published in
Journal of magnetic resonance (San Diego, Calif. : 1997)
In high sensitivity inductive electron spin resonance spectroscopy, superconducting microwave resonators with large quality factors are employed. While they enhance the sensitivity, they also distort considerably the shape of the applied rectangular microwave control pulses, which limits the degree of control over the spin ensemble. Here, we employ...
Brandariz De pedro, Guillem
Protochlorophyllide (Pchlide) is the substrate of the light-driven reaction catalysed by the protochlorophyllide oxidoreductase (POR) enzyme. This reaction is a crucial step for chlorophyll biosynthesis in plants, it plays an important role in plant development and it has been suggested to also play a photoprotective role in plant cells. The POR re...
Kalyanaraman, Balaraman Cheng, Gang Zielonka, Jacek Bennett, Brian
Published in
Cell Biochemistry and Biophysics
Oxidants formed from oxidative and nitrative metabolism include reactive oxygen species (ROS) such as superoxide, hydrogen peroxide/lipid hydroperoxides and reactive nitrogen species (RNS) (e.g., peroxynitrite [ONOO–] and nitrogen dioxide), and reactive halogenated species (e.g., hypochlorous acid [HOCl]). Increasingly, ROS and RNS are implicated i...
Bali, Avnika P. Sahu, Indra D. Craig, Andrew F. Clark, Emily E. Burridge, Kevin M. Dolan, Madison T. Dabney-Smith, Carole Konkolewicz, Dominik Lorigan, Gary A.
Published in
Chemistry and physics of lipids
Spectroscopic studies of membrane proteins (MPs) are challenging due to difficulties in preparing homogenous and functional lipid membrane mimetic systems into which membrane proteins can properly fold and function. It has recently been shown that styrene-maleic acid (SMA) copolymers act as a macromolecular surfactant and therefore facilitate the f...
Janson, C. Palmqvist, A. E. C.
Published in
Catalysis Letters
In the synthesis of iron-chelating ordered mesoporous nitrogen-functionalized carbon (Fe–OMC) catalysts, the removal of the silica template is a crucial and critical step. The silica removal method used today for the Fe–OMCs is based on the very toxic hydrofluoric acid (HF), which usage should be limited where possible. Therefore, the aim of this s...
Kosik, Kenneth S Han, Songi
Published in
Advances in experimental medicine and biology
Many proteins, particularly those that are intrinsically disordered and carry charges have a tendency to undergo liquid liquid phase separation (LLPS). Phase separation is a widespread mechanism by which cells concentrate a set of proteins to perform molecular reactions, and appear to compartmentalize molecular functions. Among the intrinsically di...
Nel, Janske Desmet, Céline M Driesschaert, Benoit Saulnier, Patrick Lemaire, Laurent Gallez, Bernard
Published in
International journal of pharmaceutics
Oxygen is essential in physiology and pathophysiology. Electron paramagnetic resonance (EPR) oximetry, using oxygen sensitive paramagnetic materials, could be attractive for measuring oxygen in tissues. The aim of the present study was to assess the properties of lipid nanocapsules (LNCs) loaded with the nitroxide tempo-benzoate (TB) or tetrathiatr...
Jasniewski, Andrew Hu, Yilin Ribbe, Markus W
Published in
Methods in molecular biology (Clifton, N.J.)
Electron paramagnetic resonance (EPR) is a spectroscopic technique that is sensitive to the presence of unpaired electrons and, therefore, is a powerful tool for the study of proteins containing complex metallocofactors. When a magnetic field is applied to a transition metal-containing system with unpaired electrons and the sample is irradiated wit...
Gourier, Didier Binet, Laurent Calligaro, Thomas Cappelli, Serena Vezin, Hervé Bréhéret, Jean-Gabriel Hickman-Lewis, Keyron Gautret, Pascale Foucher, Frédéric Campbell, Kathy
...
Electron paramagnetic resonance (EPR) analysis of carbonaceous, volcanic, tidal sediments from the 3.33 Ga-old Josefsdal Chert (Kromberg Formation, Barberton Greenstone Belt), documents the presence of two types of insoluble organic matter (IOM): (1) IOM similar to that previously found in Archean cherts from numerous other sedimentary rocks in the...
