Characterization of heme-coordinating histidyl residues of an engineered six-coordinated myoglobin mutant based on the reactivity with diethylpyrocarbonate, mass spectrometry, and electron paramagnetic resonance spectroscopy

2008 ◽  
Vol 105 (6) ◽  
pp. 604-613 ◽  
Author(s):  
Nobuyuki Nakanishi ◽  
Fusako Takeuchi ◽  
Sam-Yong Park ◽  
Hiroshi Hori ◽  
Kohei Kiyota ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Electron Paramagnetic Resonance ◽  
Electron Paramagnetic Resonance Spectroscopy ◽  
Resonance Spectroscopy ◽  
Paramagnetic Resonance ◽  
Electron Paramagnetic

scholarly journals Characterization of neutrophilb-type cytochrome in situ by electron paramagnetic resonance spectroscopy

FEBS Letters ◽  
1991 ◽  
Vol 281 (1-2) ◽  
pp. 130-132 ◽  
Author(s):  
Ikuko Ueno ◽  
Satoshi Fujii ◽  
Hiroaki Ohya-Nishiguchi ◽  
Tetsutaro Iizuka ◽  
Shiro Kanegasaki
Keyword(s):  
Electron Paramagnetic Resonance ◽  
Electron Paramagnetic Resonance Spectroscopy ◽  
Resonance Spectroscopy ◽  
Paramagnetic Resonance ◽  
Electron Paramagnetic

Characterization of titanium dopants in sodium alanate by electron paramagnetic resonance spectroscopy

2005 ◽  
Vol 20 (12) ◽  
pp. 3265-3269 ◽  
Author(s):  
Meredith T. Kuba ◽  
Sandra S. Eaton ◽  
Christine Morales ◽  
Craig M. Jensen
Keyword(s):  
Electron Paramagnetic Resonance ◽  
Electron Paramagnetic Resonance Spectroscopy ◽  
Epr Spectra ◽  
Minor Amount ◽  
Resonance Spectroscopy ◽  
Paramagnetic Resonance ◽  
Dehydrogenation Kinetics ◽  
Electron Paramagnetic ◽  
Kinetics Of

Electron paramagnetic resonance (EPR) spectra were obtained for samples of Ti-doped NaAlH4 subjected to different numbers of cycles of dehydrogenation/re-hydrogenation. Ti is observed to evolve from its initial Ti(III) state through a series of Ti(0) species during the first 5 cycles. Although the conversion of Ti(III) to Ti(0) occurs much more readily for TiCl3-doped samples than those prepared with TiF3, in both cases the evolution of Ti follows the same sequence that involves 3 distinguishable Ti(0) species and ends in the predominance of the same single Ti(0) species. The spectrum of a sample of NaAlH4 containing 2 mol% of cubic Al3Ti is distinctly different than any of those observed for the Ti(0) species that arise during the hydrogen cycling of the hydride. The major changes in the nature of the predominant Ti species have little if any effect on the dehydrogenation kinetics, which strongly suggests that the profoundly enhanced hydrogen cycling kinetics of Ti-doped NaAlH4 are due to a Ti species present in only a relatively minor amount.

scholarly journals Synthesis of spin-labeled emoxypine, methionine, o-anisidine

2020 ◽  
Vol 56 (2) ◽  
pp. 192-196
Author(s):  
M. V. Lisouskaya ◽  
N. V. Kot
Keyword(s):  
Mass Spectrometry ◽  
Nuclear Magnetic Resonance ◽  
Electron Paramagnetic Resonance ◽  
Electron Paramagnetic Resonance Spectroscopy ◽  
Resonance Spectroscopy ◽  
Ultraviolet Spectroscopy ◽  
Labeled Compounds ◽  
Paramagnetic Resonance ◽  
Biochemical Studies ◽  
Electron Paramagnetic

Spin-labeled (acylated with 4-doxylpentanoic acid) emoxypine, methionine, o-anisidine were synthesized. The compounds obtained were characterized using nuclear magnetic resonance spectroscopy, electron paramagnetic resonance spectroscopy, infrared and ultraviolet spectroscopy and mass spectrometry. Synthesized spin-labeled compounds can be used for biochemical studies using EPR spectroscopy.

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