Zobrazeno 1 - 10
of 190
pro vyhledávání: '"Arnold J. Hoff"'
Previous attempts to interpret the time-resolved electron paramagnetic resonance spectra of photosynthetic bacteria have been based on the premise that electron spin polarization arises in the primary radical pair (P+I− fromed by photoinduced charg
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::111ed9f28528429418d15bda8203dd2c
https://ora.ox.ac.uk/objects/uuid:3053cc00-6fdb-4e16-8409-edbc03fb9ff3
https://ora.ox.ac.uk/objects/uuid:3053cc00-6fdb-4e16-8409-edbc03fb9ff3
Autor:
Robert van der Vos, Stephen J. Sexton, P. J. Hore, Susana Shochat, Arnold J. Hoff, Eric M. Franken, Peter Gast
Publikováno v:
Biochimica et Biophysica Acta (BBA)-Bioenergetics, 1230(1-2), 51-61. ELSEVIER SCIENCE BV
In this work, the magnetic field effects (MFE) on the triplet yield in reaction centers (RCs) of Rhodobacter (Rb.) sphaeroides 2.4.1 and its Tyr M210 → Trp mutant are compared. The MFE is measured between 5 and 225 K by monitoring the absorbance. U
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f671b7c621f6e1895bba9621236304a9
https://doi.org/10.1016/0005-2728(95)00039-l
https://doi.org/10.1016/0005-2728(95)00039-l
Autor:
T. N. Kropacheva, Stenbjörn Styring, Yashar Feyziyev, Fikret Mamedov, W. Onno Feikema, Arnold J. Hoff
Publikováno v:
Chemical Physics. 294:471-482
The spin-state of cytochrome b559 (Cyt b559) was studied in photosystem II (PSII) membrane fragments by low-temperature EPR spectroscopy. Treatment of the membranes with 2,3-dichloro-5,6-dicyano-p-benzoquinone (DDQ) converts the native low-spin (LS)
Publikováno v:
The Journal of Physical Chemistry B. 106:4305-4312
The triplet state of the carotenoid spheroidene, a pigment cofactor of reaction centers (RCs) from the photosynthetic bacterium Rhodobacter sphaeroides 2.4.1., was studied with time-resolved direct-detection EPR under polarized light excitation (magn
Autor:
Rik de Wijn, Arjo L. de Boer, Sieglinde Neerken, Arnold J. Hoff, Erik Vijgenboom, Hjalmar P. Permentier, Peter Gast
Publikováno v:
Photosynthesis Research
Mutants of Rhodobacter (Rba.) sphaeroides are described which were designed to study electron transfer along the so-called B-branch of reaction center (RC) cofactors. Combining the mutation L(M214)H, which results in the incorporation of a bacterioch
Publikováno v:
Chemical Physics Letters. 338:173-179
Experiments are described in which a low-amplitude microwave pulse excites only one out of four allowed transitions of a spin-correlated radical pair (SCRP). A second high-amplitude pulse produces an FID whose temporal shape is strongly modulated wit
Autor:
Gabrielle M. Owen and, Arnold J. Hoff
Publikováno v:
The Journal of Physical Chemistry B. 105:1458-1463
The isotropic and linear dichroic triplet−singlet difference spectra of the Fenna−Matthews−Olson (FMO) complex of the green sulfur bacterium Prosthecochloris aestuarii measured with absorbance detected magnetic resonance (ADMR) are presented. T
Autor:
Jan C. den Hollander, Richard J. Cogdell, Niall J. Fraser, T. A. Egorova-Zachernyuk, Peter Gast, Marc Baldus, Arnold J. Hoff, H. J. M. de Groot
Publikováno v:
Journal of Biomolecular NMR. 19:243-253
One- and two-dimensional solid-state NMR experiments on a uniformly labeled intrinsic membrane-protein complex at ultra-high magnetic fields are presented. Two-dimensional backbone and side-chain correlations for a [U-13C, 15N] labeled version of the
Publikováno v:
Proceedings of the National Academy of Sciences, 97(18), 9865-9870
We report13C magic angle spinning NMR observation of photochemically induced dynamic nuclear spin polarization (photo- CIDNP) in the reaction center (RC) of photosystem II (PS2). The light-enhanced NMR signals of the natural abundance13C provide info
Publikováno v:
Journal of Physical Chemistry B, 104(17), 4222-4228. AMER CHEMICAL SOC
The first time-resolved magnetophotoselection study of the primary donor tripler state (P-3) in bacterial reaction centers from Rhodobacter sphaeroides R26 and Rhodopseudomonas viridis is reported. With direct excitation of the primary donor, this ap