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

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) =...

Maximizing domestic water accessibility: A statistical model

Desalination ◽  
2009 ◽  
Vol 248 (1-3) ◽  
pp. 530-536 ◽  
Author(s):  
A. Kohli ◽  
S.J. Komisar ◽  
C.E. Montenegro
Keyword(s):  
Statistical Model ◽  
Domestic Water ◽  
Water Accessibility

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

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.

Effect of Hydroxyapatite Nanoparticles on Ibuprofen Release from Carboxymethyl-Hexanoyl Chitosan/O-Hexanoyl Chitosan Hydrogel

2006 ◽  
Vol 6 (9) ◽  
pp. 2929-2935 ◽  
Author(s):  
Tse-Ying Liu ◽  
Ting-Yu Liu ◽  
San-Yuan Chen ◽  
Shian-Chuan Chen ◽  
Dean-Mo Liu
Keyword(s):  
Drug Release ◽  
Release Kinetics ◽  
Burst Release ◽  
Release Behavior ◽  
Chitosan Hydrogel ◽  
Sequential Release ◽  
Water Accessibility ◽  
Hydrophilic Nature ◽  
Hexanoyl Chitosan ◽  
Kinetics Of

In order to explore the effect of nanofiller on the regulation of the drug release behavior from microsphere-embedded hydrogel prepared by carboxymethyl-hexanoyl chitosan (HNOCC) and O-hexanoyl chitosan (OHC), the release kinetics was investigated in terms of various amounts of calcium-deficient hydroxyapatite (CDHA) nanoparticles incorporated. HNOCC is a novel chitosan-based hydrophilic matrix with a burst release profile in a highly swollen state. The drug release kinetics of the HNOCC hydrogel can be regulated by incorporation of well-dispersed CDHA nanoparticles. It was found that the release duration of ibuprofen (IBU) from HNOCC was prolonged with increasing amounts of CDHA which acts as a crosslink agent and diffusion barrier. On the contrary, the release duration of the IBU from OHC (hydrophobic phase) was shortened through increasing the CDHA amount over 5%, which is due to the hydrophilic nature of the CDHA nanoparticles destroying the intermolecular hydrophobic interaction and accelerating OHC degradation. Thus, water accessibility and molecular relaxation were enhanced, resulting in a higher release rate. In addition, sustained and sequential release behavior was achieved by embedding the OHC microspheres (hydrophobic phase) into the HNOCC (hydrophilic phase) matrix, which could significantly prolong the release duration of the HNOCC drug-loaded implant.

scholarly journals Water Accessibility, Aggregation, and Motional Features of Polysaccharide-Protein Conjugate Vaccines

2004 ◽  
Vol 86 (1) ◽  
pp. 3-9 ◽  
Author(s):  
Francesco Berti ◽  
Paolo Costantino ◽  
Marco Fragai ◽  
Claudio Luchinat
Keyword(s):  
Conjugate Vaccines ◽  
Protein Conjugate ◽  
Water Accessibility

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
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