Structural Equilibrium in New Nitroxide-Capped Cyclodextrins: CW and Pulse EPR Study

2013 ◽  
Vol 117 (27) ◽  
pp. 8223-8231 ◽  
Author(s):  
Olesya A. Krumkacheva ◽  
Matvey V. Fedin ◽  
Dmitry N. Polovyanenko ◽  
Laszlo Jicsinszky ◽  
Sylvain R. A. Marque ◽  
...  
Keyword(s):  
Pulse Epr ◽  
Structural Equilibrium ◽  
Capped Cyclodextrins

EPR Spectroscopy Elucidates the Electronic Structure of [FeV(O)(TAML)] Complexes

2021 ◽  
Author(s):  
Yujeong Kim ◽  
Jin Kim ◽  
Linh. K. Nguyen ◽  
Yong-Min Lee ◽  
Wonwoo Nam ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Epr Spectroscopy ◽  
Macrocyclic Ligands ◽  
Spin Hamiltonian ◽  
Pulse Epr ◽  
Hamiltonian Parameters

Multifrequency, multitechnique pulse EPR spectroscopy was employed to unravel the spin Hamiltonian parameters of 17O in the [FeV=O] moiety with two different tetraamido macrocyclic ligands (TAMLs), [FeV(O)(TAML-1)]– (1, H4(TAML-1) =...

scholarly journals Pulse EPR distance measurements to study multimers and multimerisation

2018 ◽  
Vol 116 (12) ◽  
pp. 1513-1521 ◽  
Author(s):  
Katrin Ackermann ◽  
Bela E. Bode
Keyword(s):  
Distance Measurements ◽  
Pulse Epr

Water accessibility in a membrane-inserting peptide comparing Overhauser DNP and pulse EPR methods

2016 ◽  
Vol 144 (19) ◽  
pp. 194201 ◽  
Author(s):  
Takuya F. Segawa ◽  
Maximilian Doppelbauer ◽  
Luca Garbuio ◽  
Andrin Doll ◽  
Yevhen O. Polyhach ◽  
...  
Keyword(s):  
Water Accessibility ◽  
Pulse Epr

Aging of iron manganite negative temperature coefficient thermistors

1998 ◽  
Vol 13 (5) ◽  
pp. 1238-1242 ◽  
Author(s):  
T. Battault ◽  
R. Legros ◽  
A. Rousset
Keyword(s):  
Temperature Coefficient ◽  
Spinel Structure ◽  
Negative Temperature Coefficient ◽  
Negative Temperature ◽  
X Ray Diffraction ◽  
X Ray ◽  
Octahedral Sites ◽  
Before And After ◽  
Structural Equilibrium ◽  
Electrical Data

“Aging,” defined as the drift of resistance with temperature after 1000 h, was investigated for iron manganite temperature coefficient thermistors. For these devices, aging is relatively large, about 10%. The cationic distributions before and after aging were determined by Mössbauer spectroscopy. These distributions explain all the x-ray diffraction and correlated electrical data. The origin of the aging observed on iron manganites thermistors has been identified. It is due to the migration of Fe3+ ions from tetrahedral to octahedral sites of the spinel structure in order to reach a structural equilibrium.

scholarly journals Characterizing SPASM/twitch Domain-Containing Radical SAM Enzymes by EPR Spectroscopy

2021 ◽  
Author(s):  
Aidin R. Balo ◽  
Lizhi Tao ◽  
R. David Britt
Keyword(s):  
Epr Spectroscopy ◽  
Continuous Wave ◽  
Spectroscopic Studies ◽  
Paramagnetic Species ◽  
Paramagnetic Resonance ◽  
Iron Sulfur Cluster ◽  
Radical Sam Enzymes ◽  
Iron Sulfur ◽  
Pulse Epr ◽  
Multiple Domains

AbstractOwing to their importance, diversity and abundance of generated paramagnetic species, radical S-adenosylmethionine (rSAM) enzymes have become popular targets for electron paramagnetic resonance (EPR) spectroscopic studies. In contrast to prototypic single-domain and thus single-[4Fe–4S]-containing rSAM enzymes, there is a large subfamily of rSAM enzymes with multiple domains and one or two additional iron–sulfur cluster(s) called the SPASM/twitch domain-containing rSAM enzymes. EPR spectroscopy is a powerful tool that allows for the observation of the iron–sulfur clusters as well as potentially trappable paramagnetic reaction intermediates. Here, we review continuous-wave and pulse EPR spectroscopic studies of SPASM/twitch domain-containing rSAM enzymes. Among these enzymes, we will review in greater depth four well-studied enzymes, BtrN, MoaA, PqqE, and SuiB. Towards establishing a functional consensus of the additional architecture in these enzymes, we describe the commonalities between these enzymes as observed by EPR spectroscopy.

Complexation of Copper(II) with Carbonate Ligands in Aqueous Solution:  A CW and Pulse EPR Study

1997 ◽  
Vol 36 (20) ◽  
pp. 4490-4499 ◽  
Author(s):  
P. M. Schosseler ◽  
B. Wehrli ◽  
A. Schweiger
Keyword(s):  
Aqueous Solution ◽  
Pulse Epr

Pulse EPR

2017 ◽  
pp. 23-38 ◽  
Author(s):  
Stefan Stoll
Keyword(s):  
Pulse Epr
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