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.
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Abbreviations
- CD:
-
circular dichroism
- Chl:
-
chlorophyll
- D1:
-
psbA gene product
- D2:
-
psbD gene product
- DM:
-
n-dodecyl-β-D-maltoside
- FWHM:
-
full-width at half maximum
- MES:
-
morpholinethanesulfonic acid
- Pheo:
-
pheophytin
- PS II:
-
Photosystem II
- RC:
-
reaction centre
- SiMo:
-
silicomolibdic acid
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Vacha, F., Psencik, J., Kuty, M. et al. Evidence for localisation of accumulated chlorophyll cation on the D1-accessory chlorophyll in the reaction centre of Photosystem II. Photosynth Res 84, 297–302 (2005). https://doi.org/10.1007/s11120-004-6817-2
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DOI: https://doi.org/10.1007/s11120-004-6817-2