New interpretation of the redox properties of cytochrome b559 in photosystem II

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• 作者：O. P. Kaminskaya ; V. A. Shuvalov
• 刊名：Doklady Biochemistry and Biophysics
• 出版年：2016
• 出版时间：January 2016
• 年：2016
• 卷：466
• 期：1
• 页码：39-42
• 全文大小：288 KB
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• 作者单位：O. P. Kaminskaya (1)
  V. A. Shuvalov (1)
  
  1. Institute of Basic Biological Problems, Russian Academy of Sciences, ul. Institutskaya 2, Pushchino, Moscow oblast, 142290, Russia
  
• 刊物类别：Biomedical and Life Sciences
• 刊物主题：Life Sciences
  Biochemistry
  Biophysics and Biomedical Physics
  Russian Library of Science
  
• 出版者：MAIK Nauka/Interperiodica distributed exclusively by Springer Science+Business Media LLC.
• ISSN：1608-3091

文摘

A model of heme–quinone redox interaction has been developed for cytochrome b559 in photosystem II. The quinone Q_C in the singly protonated form may function as an interacting quinone. The electrostatic effect between the charges on the heme iron of the cytochrome and Q_CH leads to appearance of three forms of the cytochrome with different redox potentials. A simple and effective mechanism of redox regulation of the electron transfer pathways in photosystem II is proposed.