High-field (94-GHz) EPR spectroscopy on the S(2) multiline signal of Photosystem II.

@article{citeulike:878070, abstract = {The multiline signal of the S(2) state in Photosystem II was measured both in frozen-solution and single-crystal preparations from the cyanobacterium Thermosynechococcus elongatus. The frozen-solution EPR spectrum shows a gaussian-like line shape without any resolution of Mn hyperfine couplings. This line shape can be understood on the basis of the single-crystal spectra, where a strong orientation dependence of partially resolved hyperfine structures appears. Simulation of the frozen-solution spectrum on the basis of Mn hyperfine couplings taken from published pulse-ENDOR data yields a fully rhombic g-matrix for the multiline signal with principal components 1.997, 1.970, and 1.965. The resulting isotropic g-value g(iso)=1.977 is surprisingly small compared to other manganese complexes containing manganese ions in the formal oxidation states three and four.}, address = {Freie Universit\"{a}t Berlin, Institut f\"{u}r Experimentalphysik, Arnimallee 14, 14195 Berlin, Germany.}, author = {Teutloff, C. and Kessen, S. and Kern, J. and Zouni, A. and Bittl, R. }, citeulike-article-id = {878070}, doi = {10.1016/j.febslet.2006.05.039}, issn = {0014-5793}, journal = {FEBS Lett}, keywords = {psii, psii\_epr}, month = {June}, number = {15}, pages = {3605--3609}, posted-at = {2006-09-29 17:12:44}, priority = {2}, title = {High-field (94-GHz) EPR spectroscopy on the S(2) multiline signal of Photosystem II.}, url = {http://dx.doi.org/10.1016/j.febslet.2006.05.039}, volume = {580}, year = {2006} }

TY - JOUR ID - citeulike:878070 L3 - citeulike-article-id:878070 TI - High-field (94-GHz) EPR spectroscopy on the S(2) multiline signal of Photosystem II. JF - FEBS Lett VL - 580 IS - 15 SP - 3605 EP - 3609 AD - Freie Universität Berlin, Institut für Experimentalphysik, Arnimallee 14, 14195 Berlin, Germany. SN - 0014-5793 N2 - The multiline signal of the S(2) state in Photosystem II was measured both in frozen-solution and single-crystal preparations from the cyanobacterium Thermosynechococcus elongatus. The frozen-solution EPR spectrum shows a gaussian-like line shape without any resolution of Mn hyperfine couplings. This line shape can be understood on the basis of the single-crystal spectra, where a strong orientation dependence of partially resolved hyperfine structures appears. Simulation of the frozen-solution spectrum on the basis of Mn hyperfine couplings taken from published pulse-ENDOR data yields a fully rhombic g-matrix for the multiline signal with principal components 1.997, 1.970, and 1.965. The resulting isotropic g-value g(iso)=1.977 is surprisingly small compared to other manganese complexes containing manganese ions in the formal oxidation states three and four. KW - psii KW - psii_epr AU - Teutloff, C AU - Kessen, S AU - Kern, J AU - Zouni, A AU - Bittl, R PY - 2006/06/26/ UR - http://dx.doi.org/10.1016/j.febslet.2006.05.039 ER -