期刊论文详细信息
FEBS Letters | |
Low temperature photochemistry and spectral properties of a photosystem 2 reaction center complex containing the proteins D1 and D2 and two hemes of Cyt b‐559 | |
Heber, U.1  Schreiber, U.1  Shuvalov, V.A.1  | |
[1] Institute of Botany of the University of Würzburg, D-87 Würzburg, FRG | |
关键词: Photosystem 2; Reaction center; Cytochrome b-559; Charge separation; | |
DOI : 10.1016/0014-5793(89)81607-2 | |
学科分类:生物化学/生物物理 | |
来源: John Wiley & Sons Ltd. | |
【 摘 要 】
A D1/D2/Cyt b-559 complex isolated from spinach chloroplasts contained 4 chlorophylls, 2 pheophytins and 2 hemes of Cyt b-559 with different redox potentials measured to be +70 mV(LP) (pH 7.2) and about −500 mV (XLP). Prereduced Cyt(LP) is photooxidized at 77 K due to the interaction with the state P680+ Ph − which produces the accumulation of Cyt+ P680 Ph−. Another Ph molecule is reduced with a midpoint potential of −450 mV and can interact with Cyt (XLP) forming a second electron transfer chain.
【 授权许可】
Unknown
【 预 览 】
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