Elucidation of molecular functions of the oxygen-evolving complex homologs in chloroplasts
| Project/Area Number |
23780103
|
|---|
| Research Category |
Grant-in-Aid for Young Scientists (B)
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
Applied biochemistry
|
|---|
| Research Institution | Kyoto University |
|---|
Principal Investigator |
IFUKU KENTARO 京都大学, 生命科学研究科, 助教 (50359783)
|
|---|
| Project Period (FY) |
2011 – 2013
|
| Project Status |
Completed (Fiscal Year 2013)
|
| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2011: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
|
|---|
| Keywords | 植物 / 光合成 / 電子伝達 / 環境応答 / 分子進化 / 葉緑体 / 電子伝達鎖 / 光化学系II / 酸素発生系 / 循環的電子伝達 |
|---|
| Research Abstract |
The oxygen-evolving complex (OEC) proteins are membrane-peripheral proteins bound to thylakoid lumenal side of photosystem (PS) II, and PsbP and PsbQ are the OEC proteins found in green plants. In addition, multiple homologs for PsbP and PsbQ have been identified in chloroplasts and in cyanobacteria; however, their functions have not been fully elucidated yet. In this study, we characterized molecular functions of the OEC homologs using mutants of Arabidopsis and cyanobacteria. It was found that the OEC homologs indeed have various functions in photosynthetic electron transport, such as the regulation of PSII activity under various light conditions and the accumulation of the chloroplast NAD(P)H dehydrogenase (NDH) complex that operates in cyclic electron transport around PSI. These results suggest that functional diversification of the OEC homologs has occurred during evolution to support the optimum photosynthesis.
|
Report
(4 results)
Research Products
(41 results)
-
[Journal Article] Cross-Linking Evidence for Multiple Interactions of the PsbP and PsbQ Proteins in a Higher Plant Photosystem II Supercomplex2014
Author(s)
Ido, K., Nield, J., Fukao, Y., Nishimura, T., Sato, F., Ifuku, K
-
Journal Title
J. Biol. Chem
Volume: (in press)
Related Report
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
[Presentation] Interaction of the PsbP protein in higher plant PSII complex2013
Author(s)
Nishimura, T., Asada, M., Ido, K., Mino, H., Sato, F., and Ifuku, K
Organizer
The 16^<th> International Congress on Photosynthesis
Place of Presentation
St. Louis, MO, USA
Related Report
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
