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Evidence for localisation of accumulated chlorophyll cation on the D1-accessory chlorophyll in the reaction centre of Photosystem II |
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| Authors: | Frantisek Vacha Jakub Psencik Michal Kuty Milan Durchan Pavel Siffel |
| Affiliation: | (1) Institute of Physical Biology, University of South Bohemia, Zamek 136, 373 33 Nove Hrady, Czech Republic;(2) Institute of Plant Molecular Biology, Academy of Sciences of the Czech Republic, Branisovska 31, 370 05 Ceske Budejovice, Czech Republic;(3) Faculty of Mathematics and Physics, Charles University, Ke Karlovu 3, 121 16 Prague, Czech Republic;(4) Institute of Landscape Ecology, Academy of Sciences of the Czech Republic, Zamek 136, 373 33 Nove Hrady, Czech Republic |
| Abstract: | Absorption and circular dichroism spectra of Photosystem II (PS II) reaction centres (RC) were studied and compared with spectra calculated on the basis of point-dipole approximation. Chlorophyll cation was accumulated during a light treatment of PS II RC in the presence of artificial electron acceptor silicomolybdate. Light-induced difference spectra and their calculated counterparts revealed the location of accumulated cation at the accessory chlorophyll of the D1 protein subunit. |
| Keywords: | charge separation chlorophyll photosynthesis Photosystem II reaction centre |
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