Light-induced structural changes and the site of O=O bond formation in PSII caught by XFEL
- M. Suga, F. Akita, Jian-Ren Shen
- Chemistry, PhysicsNature
- 20 February 2017
The structural changes in PSII induced by two-flash illumination at room temperature at a resolution of 2.35 Å are described, providing a mechanism for the O=O bond formation consistent with that proposed previously.
Spectroelectrochemical determination of the redox potential of pheophytin a, the primary electron acceptor in photosystem II
- Yuki Kato, M. Sugiura, A. Oda, Tadashi Watanabe
- ChemistryProceedings of the National Academy of Sciences
- 13 October 2009
Thin-layer cell spectroelectrochemistry, featuring rigorous potential control and rapid redox equilibration within the cell, was used to measure the redox potential Em(Phe a/Phe a−) of pheophytin…
Influence of the PsbA1/PsbA3, Ca(2+)/Sr(2+) and Cl(-)/Br(-) exchanges on the redox potential of the primary quinone Q(A) in Photosystem II from Thermosynechococcus elongatus as revealed by…
- Yuki Kato, T. Shibamoto, A. Boussac
- PhysicsBiochimica et Biophysica Acta
- 1 November 2012
Structural Dynamics of a Protein Domain Relevant to the Water-Oxidizing Complex in Photosystem II as Visualized by High-Speed Atomic Force Microscopy.
- Takaya Tokano, Yuki Kato, Shogo Sugiyama, T. Uchihashi, T. Noguchi
- ChemistryJournal of Physical Chemistry B
- 17 June 2020
The observed structural flexibility and conformational fluctuation of the CP43 lumenal domain are suggested to play important roles in the biogenesis of PSII and the photoassembly of the Mn4CaO5 cluster.
Characterization of Highly Purified Photosystem I Complexes from the Chlorophyll d-dominated Cyanobacterium Acaryochloris marina MBIC 11017*
The redox potentials of P740 were comparable with the potential of P700 in other cyanobacteria and higher plants; this suggests that the overall energetics of the PS I reaction were adjusted to the electron acceptor side to utilize the lower light energy gained by P740.
Physicochemical Properties of Chlorophylls in Oxygenic Photosynthesis — Succession of Co-Factors from Anoxygenic to Oxygenic Photosynthesis
- Masami Kobayashi, Shinya Akutsu, H. Miyashita
- 12 June 2013
Species dependence of the redox potential of the primary electron donor p700 in photosystem I of oxygenic photosynthetic organisms revealed by spectroelectrochemistry.
- A. Nakamura, Tomoyuki Suzawa, Yuki Kato, Tadashi Watanabe
- Environmental SciencePlant and Cell Physiology
- 1 May 2011
The redox potential of the primary electron donor P700, E(m)(P700/P700(+)), of Photosystem I (PSI) has been determined by spectroelectrochemistry with an optically transparent thin-layer electrode (OTTLE) cell to elucidate the scattering by as much as 150 mV, suggesting that the species believed to appear later in evolution of photosynthetic organisms exhibit higher values than previously thought.
Redox potential of the terminal quinone electron acceptor QB in photosystem II reveals the mechanism of electron transfer regulation
- Yuki Kato, R. Nagao, T. Noguchi
- PhysicsProceedings of the National Academy of Sciences
- 29 December 2015
The results clearly explain the mechanism of electron transfer regulation in PSII relevant to photoprotection with an impaired Mn4CaO5 cluster, in which a large decrease in the Em gap between QA and QB promotes rapid charge recombination via QA−.
Redox potential of the primary plastoquinone electron acceptor Q(A) in photosystem II from Thermosynechococcus elongatus determined by spectroelectrochemistry.
- T. Shibamoto, Yuki Kato, M. Sugiura, Tadashi Watanabe
- 21 October 2009
The redox potential of the primary plastoquinone electron acceptor Q(A), E(m)(Q(A)/Q(A)(-)), in an oxygen-evolving photosystem (PS) II complex from a thermophilic cyanobacterium Thermosynechococcus…
Redox potential of chlorophyll d in vitro.
- Masami Kobayashi, S. Ohashi, K. Iwamoto, Y. Shiraiwa, Yuki Kato, Tadashi Watanabe
- ChemistryBiochimica et Biophysica Acta
- 1 June 2007