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Hydrogen ions directly regulating the oligomerization state of Photosystem I in intact Spirulina platensis cells

  • Brief Communication
  • Chemical Biology
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Chinese Science Bulletin

Abstract

H+ concentration induced-monomerization or trimerization of photosystem I (PSI) in cyanobacteria has never been directly observed. In this work, taking characteristic spectra for the trimers and monomers as the indicators, it was experimentally demonstrated that H+ could induce the oligomeric changes of PSI reaction centers in the intact Spirulina platensis cells and also in the isolated thylakoid membrane complexes. Especially, the higher concentration of H+ would induce the monomerization while the lower the trimerization, suggesting the electrostatic interaction should be mainly responsible for changes in the oligomeric state of PSI in Spirulina platensis.

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Authors and Affiliations

  1. Beijing National Laboratory for Molecular Sciences (BNLMS), and Key Laboratory of Photochemistry of CAS, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100080, China

    Zhang Rui, Xie Jie, Hu ChangChao & Zhao JingQuan

Authors
  1. Zhang Rui
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  2. Xie Jie
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  3. Hu ChangChao
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  4. Zhao JingQuan
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Correspondence to Zhao JingQuan.

Additional information

Supported by the National Natural Science Foundation of China (Grant Nos. 30570422, 50221201, 90306013 and 30470377)

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Zhang, R., Xie, J., Hu, C. et al. Hydrogen ions directly regulating the oligomerization state of Photosystem I in intact Spirulina platensis cells. Chin. Sci. Bull. 53, 317–320 (2008). https://doi.org/10.1007/s11434-008-0064-4

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  • DOI: https://doi.org/10.1007/s11434-008-0064-4

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