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J Integr Plant Biol, 1994, 36 (8): -, Research Article
CD Spectra of D1/D2/Cyt b559 Complax in Photodamaged Photosystem Ⅱ Reaction Center
Yu Zhen-bao, Li Chong-ci, Tang Chong-qin, Kuang Ting-yun, Lu Rong-he Tang Pei-song
doi:
Abstract
The CD spectrum of photosystem Ⅱ reaction center D1/D2/Cyt b559 complex showed a strong reverse band with positive peak at 680 nm and negative peak at 660 nm in the red absorption region (Qy band). After the D1/D2/Cyt b559 complex was illuminated by strong light, the CD signals of the complex decreased significantly in the red region in which the negative peak still existed but the positive one disappeared. The result suggested that the CD signal of photosystem Ⅱ reaction center D1/D2/Cyt b559 complex not only came from the primary donor, P680, but also from other pigments such as from accessory Chl a or Pheo a.
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