Nucleotide-Independent Copper(II)-Based Distance Measurements in DNA by Pulsed ESR Spectroscopy

2017 ◽  
Vol 56 (8) ◽  
pp. 2115-2117 ◽  
Author(s):  
Matthew J. Lawless ◽  
Jessica L. Sarver ◽  
Sunil Saxena
Keyword(s):  
Esr Spectroscopy ◽  
Distance Measurements

Nucleotide-Independent Copper(II)-Based Distance Measurements in DNA by Pulsed ESR Spectroscopy

2017 ◽  
Vol 129 (8) ◽  
pp. 2147-2149 ◽  
Author(s):  
Matthew J. Lawless ◽  
Jessica L. Sarver ◽  
Sunil Saxena
Keyword(s):  
Esr Spectroscopy ◽  
Distance Measurements

A new approach to distance measurements between two spin labels in the >10 nm range

2017 ◽  
Vol 19 (7) ◽  
pp. 5222-5229 ◽  
Author(s):  
A. Blank
Keyword(s):  
Esr Spectroscopy ◽  
Dipolar Interaction ◽  
Spin Labels ◽  
Interaction Frequency ◽  
Distance Measurements ◽  
New Approach ◽  
Nm Range

ESR spectroscopy can be efficiently used to acquire the distance between two spin labels placed on a macromolecule by measuring their mutual dipolar interaction frequency, as long as the distance is not greater than ∼10 nm.

scholarly journals Analysis of Nitroxide-Based Distance Measurements in Cell Extracts and in Cells by Pulsed ESR Spectroscopy

ChemPhysChem ◽  
2017 ◽  
Vol 18 (12) ◽  
pp. 1653-1660 ◽  
Author(s):  
Matthew J. Lawless ◽  
Amit Shimshi ◽  
Timothy F. Cunningham ◽  
Monica N. Kinde ◽  
Pei Tang ◽  
...  
Keyword(s):  
Esr Spectroscopy ◽  
Distance Measurements ◽  
Cell Extracts ◽  
In Cells

Electrochemical behaviour and ESR spectra of nitro substituted mono- and dibenzoylmethylenebenzthiazolines and selenazolines

1979 ◽  
Vol 44 (5) ◽  
pp. 1540-1551 ◽  
Author(s):  
Jaro Komenda ◽  
Jiří Huzlík
Keyword(s):  
Electron Transfer ◽  
Esr Spectroscopy ◽  
Electrochemical Behaviour ◽  
Spectroscopic Studies ◽  
Esr Spectra ◽  
Slow Electron

Compounds of the type of 2-(4'-nitrobenzoyl)methylene-3-ethylbenzothiazoline (I) and 2-bis-(p-nitrobenzoyl)methylene-3-ethylbenzothiazoline (II) were studied polarographically and by ESR spectroscopy to obtain informations about their electrochemical and follow-up reactions and their conformation. Whereas with compounds of the type I the conjugation in their molecules is preserved, with type II the coplanarity of the molecules is disturbed, which is manifested in the values of the splitting constants of the ESR spectra and a slow electron transfer between both nitrophenyl substituents. These conclusions are supported by NMR spectroscopic studies.

Association of radical anion with alkali cations. IV. ESR study of the 4-nitrobenzophenone radical anion

1980 ◽  
Vol 45 (2) ◽  
pp. 369-375 ◽  
Author(s):  
Stanislav Miertuš ◽  
Ondrej Kyseľ
Keyword(s):  
Hyperfine Splitting ◽  
Radical Anion ◽  
Esr Spectroscopy ◽  
Supporting Electrolyte ◽  
Esr Spectra ◽  
Proton Donor ◽  
Alkali Cations

The 4-nitrobenzophenone radical anion prepared by electrolysis was studied by ESR spectroscopy. On the basis of the interpretation of ESR spectra, the conformation of this system was estimated. The effect of the concentration of supporting electrolyte and of the presence of a proton-donor agent (C2H5OH) was examined. It is assumed that changes in hyperfine splitting constants are caused by association.

Stability of radical anions derived from substituted 5-nitrofurans investigated by ESR spectroscopy

1985 ◽  
Vol 50 (7) ◽  
pp. 1594-1601 ◽  
Author(s):  
Jiří Klíma ◽  
Larisa Baumane ◽  
Janis Stradinš ◽  
Jiří Volke ◽  
Romualds Gavars
Keyword(s):  
Radical Anion ◽  
High Stability ◽  
Esr Spectroscopy ◽  
Reaction Path ◽  
Order Reaction ◽  
Second Order ◽  
Radical Anions ◽  
Second Order Reaction ◽  
Unpaired Electron Density ◽  
The Stability

It has been found that the decay in dimethylformamide and dimethylformamide-water mixtures of radical anions in five of the investigated 5-nitrofurans is governed by a second-order reaction. Only the decay of the radical anion generated from 5-nitro-2-furfural III may be described by an equation including parallel first- and second-order reactions; this behaviour is evidently caused by the relatively high stability of the corresponding dianion, this being an intermediate in the reaction path. The presence of a larger conjugated system in the substituent in position 2 results in a decrease of the unpaired electron density in the nitro group and, consequently, an increase in the stability of the corresponding radical anions.

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