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Trypsin inhibition of Photosystem II
Biochimica et Biophysica Acta (BBA) - Bioenergetics, 1971Abstract 1. Brief incubation of chloroplasts with trypsin accelerated (by uncoupling) while longer incubation inhibited the Hill reaction with 2,6-dichlorophenolindophenol (DCIP). When an uncoupler (NH 4 Cl or methylamine · HCl) was present, or when the reaction was light-limited, even brief incubation with trypsin inhibited the reaction.
B R, Selman, T T, Bannister
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The lipoproteins of cyanobacterial photosystem II
Journal of Photochemistry and Photobiology B: Biology, 2011Photosystem II (PSII) complexes from cyanobacteria and plants perform water splitting and plastoquinone reduction and yet have a different complement of lumenal extrinsic proteins. Whereas PSII from all organisms has the PsbO extrinsic protein, crystal structures of PSII from cyanobacteria have PsbV and PsbU while green algae and higher plants instead ...
Robert D, Fagerlund, Julian J, Eaton-Rye
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Photosystem II: the engine of life
Quarterly Reviews of Biophysics, 20031. Introduction 712. Electron transfer in PS II 723. (Mn)4cluster and mechanism of water oxidation 734. Organization and structure of the protein subunits 755. Organization of chlorophylls and redox active cofactors 816. Implications arising from the structural models 827. Perspectives 848. Acknowledgements 869. Addendum 8610.
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Mechanisms for photosystems I and II
Current Opinion in Chemical Biology, 2003Using structural information from recently published crystal structures of photosystems I and II, the processes of excitation energy transfer and electron transfer in oxygenic photosynthesis have been studied in great detail by experimental and theoretical methods.
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Heterogeneity in chloroplast photosystem II
Photosynthesis Research, 1986Photosystem-two (PSII) in the chloroplasts of higher plants and green algae is not homogeneous. A review of PSII heterogeneity is presented and a model is proposed which is consistent with much of the data presented in the literature. It is proposed that the non-quinone electron acceptor of PSII is preferentially associated with the sub-population of ...
M T, Black, T H, Brearley, P, Horton
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Copper in photosystem II: association with LHC II
Photosynthesis Research, 1987Photosystem II particles from spinach and barley contained 2.5 and 4.2 Cu per 300 chlorophylls respectively. This Cu was resistant to removal by EDTA. A large percentage of the PSII Cu in both plants is associated with the light-harvesting chlorophyll a/b protein, LHCII; 46% in barley and 76% in spinach.
P R, Sibbald, B R, Green
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On the dimerization of chlorophyll in photosystem II
Physical Chemistry Chemical Physics, 2011In photosystem II, absorbed light energy is transferred to a reaction centre consisting of chlorophyll units. Release of an electron from the reaction centre is the starting point for the charge separation and electron transport chain in PSII. Crystal structures of the reaction centre have identified two chlorophyll monomers forming a dimer with a ...
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Electron transfer in photosystem II
Photosynthesis Research, 1985The picture presently emerging from studies on the mechanism of photosystem II electron transport is discussed. The reactions involved in excitation trapping, charge separation and stabilization of the charge pair in the reaction center, followed by the reactions with the substrates, plastoquinone reduction and water oxidation, are described ...
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Structure of Photosystems I and II
2007Photosynthesis is the major process that converts solar energy into chemical energy on Earth. Two and a half billion years ago, the ancestors of cyanobacteria were able to use water as electron source for the photosynthetic process, thereby evolving oxygen and changing the atmosphere of our planet Earth.
Petra, Fromme, Ingo, Grotjohann
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Organization of Plant Photosystem II and Photosystem I Supercomplexes
2018In nature, plants are continuously exposed to varying environmental conditions. They have developed a wide range of adaptive mechanisms, which ensure their survival and maintenance of stable photosynthetic performance. Photosynthesis is delicately regulated at the level of the thylakoid membrane of chloroplasts and the regulatory mechanisms include a ...
Kouril, Roman +4 more
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