Requirements for different combinations of the extrinsic proteins in specific cyanobacterial Photosystem II mutants
- 73 Downloads
The crystallographic data available for Photosystem II (PS II) in cyanobacteria has now provided complete structures for loop E from CP43 and CP47 as well as the extrinsic subunits PsbO, PsbU and PsbV. Protein interactions between these subunits are essential for stable water splitting and there is evidence that the binding of PsbU facilitates optimal energy transfer from the phycobilisome. Interactions between PsbO and CP47 may also play a role in dimer stabilization while loop E of CP43 contributes directly to the water-splitting reaction. Recent evidence also suggests that homologs of PsbP and PsbQ play key roles in cyanobacterial PS II, and under nutrient-deficient conditions PsbQ appears essential for photoautotrophic growth.
KeywordsCP47 protein photosynthesis Photosystem II PsbO protein PsbQ protein PsbV protein PsbU protein
dark-adapted fluorescence yield when Photosystem II traps are open
- PS I (II)
Photosystem I (II)
redox active Tyr-160 of D2
Unable to display preview. Download preview PDF.
- Bricker TM and Burnap RL (2005) The extrinsic proteins. In: Wydrzynski T and Satoh K (eds) The Water/Plastoquinone Oxidoreductase of Photosynthesis. Springer, Dordrecht, The Netherlands (in press). Google Scholar
- Eaton-Rye JJ and Putnam-Evans C (2005) The core antenna components. In: Wydrzynski T and Satoh K (eds) The Water/plastoquinone Oxidoreductase of Photosynthesis. Springer, Dordrecht, The Netherlands (in press). Google Scholar
- Eaton-Rye JJ, Carlisle BH, Shand JA, Martin CA and Manulevu R (2005). Structural features associated with CP47, D1 and the extrinsic proteins that stabilize oxygen evolution. In: van der Est A and Bruce D (eds) Photosynthesis: Fundamental Aspects to Global Perspectives. Allen Press, Lawrence, Kansas (in press). Google Scholar
- Morgan, TR, Shand, JA, Clarke, SM, Eaton-Rye, JJ 1998Specific requirements for cytochrome c-550 and the manganese-stabilizing protein in photoautotrophic strains of Synechocystis sp. PCC 6803 with mutations in the domain Gly-351 to Thr-436 of the chlorophyll-binding protein CP47Biochemistry371443714449PubMedGoogle Scholar
- Nicoll, WS 2001The role of the D1 and CP47 components of the Photosystem II oxygen-evolving complexUniversity of OtagoDunedin, New ZealandPhD thesisGoogle Scholar
- Ohta, H, Yoshida, N, Sano, M, Hirano, M, Nakazato, K, Enami, I 1995Evidence for electrostatic interaction of the loop A on CP 47 with the extrinsic 33 kDa proteinMathis, P eds. Photosynthesis: from Light to BiosphereDordrechtKluwer Academic Publishers361364Google Scholar
- Veerman J, Eaton-Rye J, Mullineaux C, Vasil’ev S and Bruce D (2005) When a lumenal protein interferes with stromal side affairs: Synechocystis PCC 6803 mutants lacking PsbU. In: van der Est A and Bruce D (eds) Photosynthesis: Fundamental Aspects to Global Perspectives. Allen Press, Lawrence, Kansas (in press) Google Scholar