Связанные научные тематики:
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 Найдено научных статей и публикаций: 9, для научной тематики: ENDOR

1.

ENDOR Investigation of the Liganding Environment of Mixed-Spin Ferric Cytochrome c‘ (публикация автора на scipeople)     

O.M. Usov, P.S.-T. Choi, J.P. Shapleigh, C.P. Scholes - Journal of the American Chemical Society , 2005
The electronic structure of the 5-coordinate quantum-mechanically mixed-spin (sextet-quartet) heme center in cytochrome c‘ was investigated by electron nuclear double resonance (ENDOR), a technique not previously applied to this mixed-spin system. Cytochrome c‘ was obtained from overexpressing varia...
2.

Cryogenic Photolysis of Activated Bleomycin to Ferric Bleomycin (публикация автора на scipeople)     

R.M. Burger, O.M. Usov, V.M. Grigoryants, C.P. Scholes - Journal of Physical Chemistry B , 2006
Activated bleomycin (ABLM) is a drug−Fe(III)−hydroperoxide complex kinetically competent in DNA attack (via H4‘ abstraction). This intermediate is relatively stable, but its spontaneous conversion to ferric bleomycin (Fe(III)·BLM) is poorly characterized because no observable intermediate product ac...
3.

ENDOR of NO-Ligated Cytochrome c‘ (публикация автора на scipeople)     

O.M. Usov, P.S.-T. Choi, J.P. Shapleigh, C.P. Scholes - Journal of the American Chemical Society , 2007
The five-coordinate NO-bound heme in cytochrome c‘ from an overexpressing variant of denitrifying R. sphaeroides 2.4.3 was investigated by proton, nitrogen, and deuterium Q-band ENDOR (electron nuclear double resonance). ENDOR was a direct probe of the unpaired electron density on the nitrogen of NO...
4.

EPR−ENDOR of the Cu(I)NO Complex of Nitrite Reductase (публикация автора на scipeople)     

O.M. Usov, Y. Sun, V.M. Grigoryants, J.P. Shapleigh, C.P. Scholes - Journal of the American Chemical Society , 2011
With limited reductant and nitrite under anaerobic conditions, copper-containing nitrite reductase (NiR) of Rhodobacter sphaeroides yielded endogenous NO and the Cu(I)NO derivative of NiR. 14N- and 15N-nitrite substrates gave rise to characteristic 14NO and 15NO EPR hyperfine features indicating NO ...
5.

Hyperfine Coupling to the Bridging 17O in the Di-μ-oxo Core of a MnIII−MnIV Model Significant to the Core Electronic Structure of the O2-Evolving Complex in Photosystem II (публикация автора на scipeople)     

O.M. Usov, V.M. Grigoryants, R. Tagore, G.W. Brudvig, C.P. Scholes - Journal of the American Chemical Society , 2007
Di-μ-oxo MnIII−MnIV dimers are models for coupled, mixed-valence manganese in the oxygen-evolving centers of green plants. Using a recently reported method of exchanging water oxygen into the di-μ-oxo cross-bridges , we have incorporated 17O into the μ-oxo cross bridges of the MnIII−MnIV bipyridyl d...
6.

Resolution of the Spectroscopy versus Crystallography Issue for NO Intermediates of Nitrite Reductase from Rhodobacter sphaeroides (публикация автора на scipeople)     

S. Ghosh, A. Dey, O.M. Usov, Y. Sun, V.M. Grigoryants, C.P. Scholes, E.I. Solomon - Journal of the American Chemical Society , 2007
Copper nitrite reductase contains a T1 and T2 Cu center and catalyzes the one electron reduction of nitrite to NO. This study determines that reaction of the reduced enzyme with excess NO generates the T1 reduced T2 oxidized-nitrite bound form and not the η2-NO·Cu+ species observed in the crystal st...
7.

The Role of Arginine-127 at the Proximal NO-Binding Site in Determining the ElectronicStructure and Function of 5-Coordinate NO-Heme in Cytochrome c' of Rhodobacter sphaeroides (публикация автора на scipeople)     

B. Lee, O.M. Usov, V.M. Grigoryants, W.K. Myers, J. P. Shapleigh, C.P. Scholes - Biochemistry , 2009
Cytochrome c' is a heme protein from a denitrifying variant of Rhodobacter sphaeroides which may serve to store and transport metabolic NO while protecting against NO toxicity. Its heme site bears resemblance through its 5-coordinate NO-binding capability to the regulatory site in soluble guanylate ...
8.

Intrinsic defects in nonstoichiometric b-SiC nanoparticles studied by pulsed magnetic resonance methods (публикация автора на scipeople)   

D.V. Savchenko, A. Pöppl, E.N. Kalabukhova, E.F. Venger, M.P. Gadzira, G.G. Gnesin - Semiconductor Physics, Quantum Electronics & Optoelectronics , 2010
Nonstoichiometric b-SiC nanoparticles (np-SiC) have been studied by electron paramagnetic resonance (EPR) and pulsed magnetic resonance methods including field swept electron spin echo (FS ESE), pulsed electron nuclear double resonance (ENDOR) and hyperfine sublevel correlation spectroscopy (HYSC...
9.

Spin-Coupling and Hyperfine Interaction of the Nitrogen Donors in 6H-SiC (публикация автора на scipeople)   

D.V. Savchenko, E.N. Kalabukhova, V.S. Kiselev, J. Hoentsch, A. Pöppl - Phys. Status Solidi B , 2009
The X-, Q-band field-sweep electron spin echo (FS ESE) study of n-type 6H SiC wafers shows besides the well known hyperfine (hf) triplet lines of 14N on two quasi-cubic (Nc1, Nc2) and hex-agonal (Nh) sites additional triplet lines (Nx) of comparatively low intensity with a g-tensor of about the aver...