Primary radical ion pairs in photosystem II core complexes.
作者： V. A. Nadtochenko , I. V. Shelaev , M. D. Mamedov , A. Ya. Shkuropatov , A. Yu. Semenov
DOI: 10.1134/S0006297914030043
关键词:
摘要: Ultrafast absorption spectroscopy with 20-fs resolution was applied to study primary charge separation in spinach photosystem II (PSII) reaction center (RC) and PSII core complex (RC integral antenna) upon excitation at maximum wavelength 700–710 nm 278 K. It found that the initial between P680* ChlD1 (Chl-670) takes place a time constant of ∼1 ps formation charge-separated state an admixture of: P680*(1−δ) (P680δ+1ChlD1δ−), where δ ∼ 0.5. The subsequent electron transfer from P680δ+ChlD1δ− pheophytin (Pheo) occurs within 13 is accompanied by relaxation band 670 (ChlD1δ−) bleaching PheoD1 bands 420, 545, 680 development Pheoband 460 nm. Further QA 250 accordance earlier data. spectra P680+ Pheo− include nm; this indicates Chl-670 intermediate P680 Pheo. Stimulated emission kinetics 685 demonstrate existence two decaying components constants ∼13 due P680+PheoD1−, respectively.
springer.com
sci-hub.se 参考文章(43)
H. Michel, O. Epp, J. Deisenhofer, Pigment-protein interactions in the photosynthetic reaction centre from Rhodopseudomonas viridis. The EMBO Journal. ,vol. 5, pp. 2445- 2451 ,(1986) , 10.1002/J.1460-2075.1986.TB04520.X
J. B. Birks, Organic Molecular Photophysics ,(1975)
Valentin I. Prokhorenko, Alfred R. Holzwarth, Primary Processes and Structure of the Photosystem II Reaction Center: A Photon Echo Study†,‡ Journal of Physical Chemistry B. ,vol. 104, pp. 11563- 11578 ,(2000) , 10.1021/JP002323N
V.A. Shuvalov, The study of the primary photoprocesses in Photosystem I of chloroplasts Recombination luminescence, chlorophyll triplet state and triplet-triplet annihilation Biochimica et Biophysica Acta (BBA) - Bioenergetics. ,vol. 430, pp. 113- 121 ,(1976) , 10.1016/0005-2728(76)90227-9
Marta Germano, Anatoli Ya. Shkuropatov, Hjalmar Permentier, Rik de Wijn, Arnold J. Hoff, Vladimir A. Shuvalov, Hans J. van Gorkom, Pigment Organization and Their Interactions in Reaction Centers of Photosystem II: Optical Spectroscopy at 6 K of Reaction Centers with Modified Pheophytin Composition† Biochemistry. ,vol. 40, pp. 11472- 11482 ,(2001) , 10.1021/BI010439J
Antonius M. Nuijs, Hans J. van Gorkom, Johan J. Plijter, Louis N.M. Duysens, Primary-charge separation and excitation of chlorophyll a in Photosystem II particles from spinach as studied by picosecond absorbance-difference spectroscopy Biochimica et Biophysica Acta. ,vol. 848, pp. 167- 175 ,(1986) , 10.1016/0005-2728(86)90038-1
I. V. Shelaev, F. E. Gostev, V. A. Nadtochenko, A. Ya. Shkuropatov, A. A. Zabelin, M. D. Mamedov, A. Yu. Semenov, O. M. Sarkisov, V. A. Shuvalov, Primary light-energy conversion in tetrameric chlorophyll structure of photosystem II and bacterial reaction centers: II. Femto- and picosecond charge separation in PSII D1/D2/Cyt b559 complex Photosynthesis Research. ,vol. 98, pp. 95- 103 ,(2008) , 10.1007/S11120-008-9371-5
Grzegorz Raszewski, Bruce A. Diner, Eberhard Schlodder, Thomas Renger, Spectroscopic Properties of Reaction Center Pigments in Photosystem II Core Complexes: Revision of the Multimer Model Biophysical Journal. ,vol. 95, pp. 105- 119 ,(2008) , 10.1529/BIOPHYSJ.107.123935
I. Fujita, M. S. Davis, J. Fajer, Anion radicals of pheophytin and chlorophyll A: their role in the primary charge separations of plant photosynthesis Journal of the American Chemical Society. ,vol. 100, pp. 6280- 6282 ,(1978) , 10.1021/JA00487A079
M. Germano, C.C. Gradinaru, A.Ya. Shkuropatov, I.H.M. van Stokkum, V.A. Shuvalov, J.P. Dekker, R. van Grondelle, H.J. van Gorkom, Energy and Electron Transfer in Photosystem II Reaction Centers with Modified Pheophytin Composition Biophysical Journal. ,vol. 86, pp. 1664- 1672 ,(2004) , 10.1016/S0006-3495(04)74235-6