2008 Fiscal Year Final Research Report
Analyses of the photosynthetic oxygen evolving system that sustains the global environment - Reaction mechanisms, acquisition and succession processes
| Project/Area Number |
17GS0314
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| Research Category |
Grant-in-Aid for Creative Scientific Research
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| Allocation Type | Single-year Grants |
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| Research Institution | Kyoto University |
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Principal Investigator |
MIMURO Mamoru Kyoto University, 大学院・人間環境学研究科, 教授 (40142004)
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| Co-Investigator(Kenkyū-buntansha) |
TANAKA Ayumi 北海道大学, 低温科学研究所, 教授 (10197402)
NOGUCHI Takumi 筑波大学, 大学院・数理物質科学研究科, 准教授 (60241246)
MURAKAMI Akio 神戸大学, 内海域環境教育研究センター, 准教授 (50304134)
SEKINE Yasuhiko 立教大学, 理学部, 准教授 (80222074)
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| Project Period (FY) |
2005 – 2009
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| Keywords | 酸素発生 / 光合成 / 葉緑体 / 進化中間体 |
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| Research Abstract |
We analyzed the photosynthetic oxygen-evolving system that sustains the global environments. Our main targets for analysis of reaction mechanisms, acquisition and succession processes. As for acquisition processes, we investigated the change of photosynthetic pigments and following optimization processes of protein complexes. This process was a typical succession from anoxygenic photosynthetic bacteria to cyanobacteria. On the reaction mechanism, we changed a ligand to Mn cluster and other amino acids that were supposed to be involved to reaction processes, and found that biding of water molecules to a specific Mn atom. We further found the proton release cycle. On the succession processes, we studied the requisites for transfer of cyanobacterial genes to chloroplast genes. By the five-year study, we published many papers that would be a milestone for study of the photosynthetic oxygen-evolving system in the world.
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[Journal Article] Niche adaptation and genome expansion in the chlorophyll d-producing cyanobacterium Acaryochloris marina.2008
Author(s)
W.D. Swingley, M. Chen, P.C. Cheung, A.L. Conrad, L.C. Dejesa, J. Hao, B.M. Honchak, L.E. Karbach, A. Kurdoglu, S. Lahiri, S.D. Mastrian, H. Miyashita, L. Page, P. Ramakrishna, S. Satoh, W.M. Sattley, Y. Shimada, H.L. Taylor, T. Tomo, T. Tsuchiya, Zi T. WW.D. Swingley, M. Chen, P.C. Cheung, A.L. Conrad, L.C. Dejes
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Journal Title
Proc. Natl. Acad. Sci. USA 105
Pages: 2005-2010
Peer Reviewed
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