首页> 外文期刊>Journal of the American Chemical Society >One- and Two-Dimensional Electron Spin Echo Envelope Modulation Study of the Intermediate Electron Acceptor Pheophytin in 14~N- and 15~N-Labeled Photosystem Ⅱ
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One- and Two-Dimensional Electron Spin Echo Envelope Modulation Study of the Intermediate Electron Acceptor Pheophytin in 14~N- and 15~N-Labeled Photosystem Ⅱ

机译:14〜N和15〜N标记的光系统中电子受体卟啉的一维和二维电子自旋回波包络调制Ⅱ

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摘要

The intermediate electron acceptor of the photosystem Ⅱ(PSⅡ) reaction center, which is a pheophytin-α (Pheo) molecule, was studied by pulsed EPR. Electron spin echo envelope modulation (ESEEM) experiments were carried out in ~14N- and ~15N-labeled PSⅡ reaction centers. The assignment of the ESEEM frequencies was achieved by the application of three-pulse (stimulated echo) and four-pulse 2D-HYSCORE sequences.
机译:通过脉冲EPR研究了光系统Ⅱ(PSⅡ)分子中的脱镁叶绿素-α(Pheophytin-α,Pheo)分子的中间电子受体。在〜14N和〜15N标记的PSⅡ反应中心进行了电子自旋回波包络调制(ESEEM)实验。 ESEEM频率的分配是通过应用三脉冲(受激回波)和四脉冲2D-HYSCORE序列实现的。

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