Theg-tensor anisotropy of the triplet state of the primary electron donor in the photosynthetic bacteriumRhodobacter sphaeroides by high-field (95 GHz) EPR

被引：0

作者：

A. Labahn

M. Huber

机构：

[1] Albert-Ludwigs-Universität Freiburg,Institut für Physikalische Chemie

[2] Leiden University,Department of Molecular Physics

[3] Leiden University,Huygens Laboratory

来源：

Applied Magnetic Resonance | 2001年 / 21卷

关键词：

Electron Paramagnetic Resonance Spectrum; Triplet State; Freeze Solution; Primary Electron Donor; Semiempirical Molecular Orbital Method;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The anisotropy of theg-tensor of the light-induced triplet state of the primary electron donor (D) of the photosynthetic bacteriumRhodobacter sphaeroides is determined by electron-spin-echo-detected electron paramagnetic resonance at 95 GHz. Measurements on frozen solutions of quinone-depleted reaction centers yield g-values along the principal directions of the zero-field splitting tensor (Norris J.R., Budil D.E., Gast P., Chang C.H., ElKabbani O., Schiffer M.: Proc. Natl. Acad. Sci. USA86, 4335–4339, 1989).g-Values determined are: 2.00308, 2.00238, and 2.00138. The deviation from axial symmetry and thez-component of the g-tensor are smaller than observed in the cation radical of D.

引用

页码：381 / 387

页数：6

共 26 条

[1] The g-tensor anisotropy of the triplet state of the primary electron donor in the photosynthetic bacterium Rhodobacter sphaeroides by high-field (95 GHz) EPR
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[6] The primary donor cation P+• in photosynthetic reaction centers of site-directed mutants of Rhodobacter sphaeroides:: g-tensor shifts revealed by high-field EPR at 360 GHz/12.8 T
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[10] INVESTIGATION OF THE ELECTRONIC-STRUCTURE OF THE PRIMARY ELECTRON-DONOR IN BACTERIAL PHOTOSYNTHESIS - MEASUREMENTS OF THE ANISOTROPY OF THE ELECTRONIC G-TENSOR USING HIGH-FIELD HIGH-FREQUENCY EPR
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