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Hydrogen ions directly regulating the oligomerization state of Photosystem I in intact Spirulina platensis cells
  • 时间:0
  • 分类:Q945.11[生物学—植物学]
  • 作者机构:[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
  • 相关基金:Supported by the National Natural Science Foundation of China (Grant Nos. 30570422, 50221201, 90306013 and 30470377)
中文摘要:

H+ 集中 induced-monomerization 或相片系统的 trimerization (希腊语的第二十三个字母) 我从来直接没在 cyanobacteria 被观察过。在这个工作,作为指示物为整齐的 ers 和单体拿典型系列, H+ 能在未经触动的 Spirulina 压盘导致希腊语的第二十三个字母反应中心的 oligomeric 变化,这试验性地被表明是房间并且另外在孤立的 thylakoid 膜建筑群。特别,当时, H+ 的更高的集中将导致 monomerization 更低 trimerization,建议静电的相互作用应该为处于在 Spirulina 压盘的希腊语的第二十三个字母的 oligomeric 状态的变化主要负责是。

英文摘要:

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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