J Integr Plant Biol. ›› 1995, Vol. 37 ›› Issue (5): -.

• Research Articles •    

Light-Induced Damage of Pheophytin a Molecule in the Isolated Photosystem Ⅱ Reaction Center D1/D2/Cyt b559 Complex

Kuang Ting-yun, Hou Jian-min, Peng De-chuan, Tang Chong-qin and Tang Pei-song   

Abstract: Photodamage of some pigments in the isolated photosystem Ⅱ (PS Ⅱ ) reaction center D1/D2/Cyt b559 complex from spinach has been investigated by means of high performance liquid chromatography. The light-induced damage of pheophytin a (pheo a) in the complex was observed for the first time. The content of pheo a decreased about 47 % by illumination, suggesting only one of the two pheo a molecules in the PS Ⅱ reaction center complex was damaged. No damage of β-carotene was found.

Key words: Photosystem Ⅱ reaction center, D1/D2/Cyt b559 complex, Pheophytina, Photodamage

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