Results 61 to 70 of about 10,849 (224)

water exchange in bacterial photosynthetic reaction centers embedded in a trehalose glass studied using multiresonance EPR [PDF]

, 2017
Using isotope labeled water (D2O and H217O) and pulsed W-band (94 GHz) high- field multiresonance EPR spectroscopies, such as ELDOR-detected NMR and ENDOR, the biologically important question of detection and quantification of local water in proteins ...
Lubitz, Wolfgang, Malferrari, Marco, Möbius, Klaus, Nalepa, Anna, Savitsky, Anton, Venturoli, Giovanni   +5 more
core   +1 more source

The Syringe Nitroxide Free Radical – Part II [PDF]

Free Radical Research Communications, 1993
Some plastic syringes introduce a nitroxide free radical into the fluids they contain. The EPR spectrum shows a triplet with aN = 17.0 +/- 0.1 G in plasma. We report here that this nitroxide/hydroxylamine couple serves as an antioxidant system, whose redox potential appears to be between that of vitamin C and vitamin E.
G R, Buettner, M K, Sharma
openaire   +2 more sources

Unraveling Synthetase's Mode of Action: The Pyrrolysyl‐tRNA Synthetase Dimer Uses Secondary Binding Sites in the Cell

Angewandte Chemie International Edition, EarlyView.
The pyrrolysyl‐tRNA synthetase dimer exhibits an alternating mode of action of its monomers within its catalytic cycle, which is realized upon occupation of secondary binding sites located at the intermonomer interfaces outside the catalytic binding site.
Jessica Dröden, Christoph Globisch, Eliane Landwehr, Theresa S. Braun, Daniel Summerer, Christine Peter, Malte Drescher   +6 more
wiley   +1 more source

Simultaneous Imaging of Cu+ and Cu2+ in Neural Cells Using DNAzyme Probes Reveals Mechanistic Link Between Copper Redox Imbalance and Amyloid Pathology

Angewandte Chemie, Volume 138, Issue 14, 27 March 2026.
We develop Cu+‐ and Cu2+‐specific DNAzyme fluorescent probes to visualize both copper redox states in living neurons. Aβ oligomers cause intracellular copper overload, triggering FDX1 dependent cuproptosis and generating ROS. This work links copper redox imbalance with Aβ pathology and offers a selective, sensitive way to monitor copper homeostasis in ...
Xiangli Shao, Zhenglin Yang, Zhihao Xu, Weijie Guo, Whitney Lewis, Boyi Gan, Yi Lu   +6 more
wiley   +2 more sources

Electron Spin Resonance Spin Probe Technique for Investigating Non-TEMPO Radicals Dispersed in Nanospaces of a Crystalline Zn Complex

Concepts in Magnetic Resonance: Part A, Bridging Education and Research
An ESR spin probe technique with non-TEMPO radicals, such as nitronyl nitroxide (NN), benzonitronyl nitroxide (BzNN), and iminonitroxide (IN) radicals, was used for a porous metal-organic framework (MOF), [(ZnI2)3(TPT)2] (ZnTPT; TPT = tris(4-pyridyl)-1,3,
Hirokazu Kobayashi, Kento Akiniwa, Fumiyasu Iwahori, Hidehiko Honda, Masato Yamamoto   +4 more
doaj   +1 more source

A broadband pulse EPR spectrometer for high-throughput measurements in the X-band

Journal of Magnetic Resonance Open, 2023
We present an X-band pulse EPR spectrometer with high throughput and excellent sensitivity in the 8.5-11.5GHz range. It is designed for high stability and low noise Fourier Transform measurements for applications in pulse dipolar spectroscopy, pulse ...
Nikolay P. Isaev, Anatoly R. Melnikov, Konstantin A. Lomanovich, Mikhail V. Dugin, Mikhail Yu. Ivanov, Dmitriy N. Polovyanenko, Sergey L. Veber, Michael K. Bowman, Elena G. Bagryanskaya   +8 more
doaj   +1 more source

Light-induced dipolar spectroscopy - A quantitative comparison between LiDEER and LaserIMD

, 2018
Nanometric distance measurements with EPR spectroscopy yield crucial information on the structure and interactions of macromolecules in complex systems.
Bieber, Anna, Bücker, Dennis, Drescher, Malte   +2 more
core   +1 more source

Can radiosensitivity associated with defects in DNA repair be overcome by mitochondrial-targeted antioxidant radioprotectors [PDF]

, 2014
Radiation oncologists have observed variation in normal tissue responses between patients in many instances with no apparent explanation. The association of clinical tissue radiosensitivity with specific genetic repair defects (Wegner's syndrome, Ataxia ...
Berhane, H, Bernard, M, Epperly, MW, Greenberger, JS, Rhieu, BH, Shinde, A, Skoda, EM, Wipf, P   +7 more
core   +1 more source

Multifunctional Design of Solid Polymer Electrolytes: Paving the Way for High‐Performance All‐Solid‐State Batteries

Carbon Energy, EarlyView.
This review provides a comprehensive and systematic overview of the multifunctional design strategies for solid polymer electrolytes (SPEs), a pivotal component for enabling high‐performance all‐solid‐state batteries (ASSBs). It begins with a detailed classification of SPE systems and elaborates on their respective molecular design principles. The work
Bin Man, Yuzhen Zhao, Bo Fu, Yulong Zeng, Yinwen Chen, Qingrui Liu, Wenjing Luo, Xin Li, Xuewei Li, Zikang Zhang, Yun Zheng, Sijie Liu   +11 more
wiley   +1 more source

Acidic and Electrosurface Properties of Binary TiO₂-SiO₂ Xerogels Using EPR of pH-Sensitive Nitroxides

Gels, 2021
The binary xerogels TiO2-SiO2 are widely used as catalysts and their carriers in organic synthesis. Characterization and adjustment of the electrostatic properties of the surface and the local acidity inside the pores, are necessary for the further ...
Denis O. Antonov, Daria P. Tambasova, Andrey B. Shishmakov, Igor A. Kirilyuk, Elena G. Kovaleva   +4 more
doaj   +1 more source