Results 41 to 50 of about 47,685 (161)

New Developments in Spin Labels for Pulsed Dipolar EPR

open access: yesMolecules, 2014
Spin labelling is a chemical technique that enables the integration of a molecule containing an unpaired electron into another framework for study. Given the need to understand the structure, dynamics, and conformational changes of biomacromolecules ...
Alistair J. Fielding   +3 more
doaj   +1 more source

Micromagnetic Simulations of Submicron Vortex Structures for the Detection of Superparamagnetic Labels

open access: yesSensors, 2020
We present a numerical investigation on the detection of superparamagnetic labels using a giant magnetoresistance (GMR) vortex structure. For this purpose, the Landau–Lifshitz–Gilbert equation was solved numerically applying an external z-field for the ...
Lukas Wetterau   +4 more
doaj   +1 more source

Spin-labels in biochemistry

open access: yesBiochemical Society Transactions, 1985
and P-700 (Heathcote & Evans, 1981). The existence of a group of electron acceptors with a range of redox potentials which can be sequentially reduced by the appropriate lowtemperature illumination regimens suggests that these components form an electron-transport chain t o transfer electrons from the excited-state P-700 t o ferredoxin, allowing rapid ...
openaire   +3 more sources

SPIN-LABELED TRANSFER RNA [PDF]

open access: yesProceedings of the National Academy of Sciences, 1969
The α-amino group of valyl-tRNA has been combined chemically with a nitroxide spin label through an amide linkage. This spin-labeled aminoacyl-tRNA has an electron paramagnetic resonance spectrum which reflects the mobility of the aminoacyl end of the tRNA molecule.
B M, Hoffman, P, Schofield, A, Rich
openaire   +2 more sources

An electron spin resonance study of cholestane spin label in aqueous mixtures of biliary lipids

open access: yesJournal of Lipid Research, 1977
The effect of cholesterol on the fluidity of the phospholipid matrix in mixed micelles derived from bile salts and lecithin has been determined by the paramagnetic probe technique.
R D Stevens
doaj   +1 more source

THE DYNAMICS OF HEMERYTHRIN AND HEMERYTHRIN DERIVATIVES

open access: yesStudia Universitatis Babes-Bolyai Chemia, 2021
The non-heme diiron protein hemerythrin (Hr) has been considered as a possible alternative for semi-artificial oxygen carriers (“blood substitutes”).
Francisco CARRASCOZA   +2 more
doaj   +1 more source

Efeito caotrópico do íon lítio na permeabilidade da cápsula polissacarídica da microalga Ankistrodesmus gracilis (Reinsch) Korsikov (Chlorophyceae) Chaotropic effect of lithium íon on permeability of polysaccharide capsule of the microalga Ankistrodesmus gracilis (Reinsch) Korsikov (Chlorophyceae)

open access: yesActa Botânica Brasílica, 2006
O objetivo deste trabalho foi investigar o efeito caotrópico do íon Li+ na cápsula polissacarídica da microalga colonial Ankistrodesmus gracilis. Esta microalga possui uma cápsula extensa e contínua que envolve completamente as células.
Cristina Souza Freire Nordi   +3 more
doaj   +1 more source

Broadband transmission EPR spectroscopy. [PDF]

open access: yesPLoS ONE, 2013
EPR spectroscopy employs a resonator operating at a single microwave frequency and phase-sensitive detection using modulation of the magnetic field. The X-band spectrometer is the general standard with a frequency in the 9-10 GHz range.
Wilfred R Hagen
doaj   +1 more source

Diosmin and Bromelain Stimulate Glutathione and Total Thiols Production in Red Blood Cells

open access: yesMolecules, 2023
Diosmin and bromelain are bioactive compounds of plant origin with proven beneficial effects on the human cardiovascular system. We found that diosmin and bromelain slightly reduced total carbonyls levels and had no effect on TBARS levels, as well as ...
Lukasz Gwozdzinski   +4 more
doaj   +1 more source

Surface bound microgels on the basis of carboxymethylcellulose: preparation via the Ugi reaction and structural investigation using fluorescent and spin labels

open access: yesChimica Techno Acta
A microgel with an average diameter of 368±4 nm was obtained by adding a small amount of polyvinylamine (PVAm) to a 0.3% aqueous solution of carboxymethylcellulose (CMC).
Rita S. Alqubelat   +2 more
doaj   +1 more source

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