ArticlePhotosynthesis research1996
Improved 5-step modeling of the Photosystem II S-state mechanism in cyanobacteria.
Article in Photosynthesis research, 1996. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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Who cites it
14 citing papers in PubMed.
- Regulation of light energy conversion between linear and cyclic electron flow within photosystem II controlled by the plastoquinone/quinol redox poise.Photosynthesis research · 2023Article
- Molecular basis for turnover inefficiencies (misses) during water oxidation in photosystem II.Chemical science · 2022Article
- Photoactivation: The Light-Driven Assembly of the Water Oxidation Complex of Photosystem II.Frontiers in plant science · 2016Review
- What are the oxidation states of manganese required to catalyze photosynthetic water oxidation?Biophysical journal · 2012Article
- Misses during water oxidation in photosystem II are S state-dependent.The Journal of biological chemistry · 2012Article
- Participation of glutamate-354 of the CP43 polypeptide in the ligation of manganese and the binding of substrate water in photosystem II.Biochemistry · 2011Article
- Spectroscopic and functional characterizations of cyanobacterium Synechocystis PCC 6803 mutants on and near the heme axial ligand of cytochrome b559 in photosystem II.The Journal of biological chemistry · 2010Article
- Glutamate-354 of the CP43 polypeptide interacts with the oxygen-evolving Mn4Ca cluster of photosystem II: a preliminary characterization of the Glu354Gln mutant.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2008Article
- Engineered ectopic expression of the psbA gene encoding the photosystem II D1 protein in Synechocystis sp. PCC6803.Photosynthesis research · 2007Article
- Article
- Flash-induced oxygen evolution in photosynthesis: simple solution for the extended S-state model that includes misses, double-hits, inactivation, and backward-transitions.Biophysical journal · 2005Article
- Oxygen evolution in photosynthesis: simple analytical solution for the Kok model.Biophysical journal · 2003Article
- Mutations of basic arginine residue 334 in the D1 protein of Photosystem II lead to unusual S(2) state properties in Synechocystis sp. PCC 6803.Photosynthesis research · 2002Article
- Photosystem II cyclic heterogeneity and photoactivation in the diazotrophic, unicellular cyanobacterium cyanothece species ATCC 51142Plant physiology · 1998Article
Corrections and comments
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Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
We present a model of the S-state mechanism, as well as an improved eigenvalue analysis, that integrate into a coherent ensemble several features found since the S-state model was initially developed. These features include the presence of S-1, deactivations in the dark interval between flashes, and the change in the number of active PS II centers by photoinhibition or photoactivation. A new feature is the capacity to predict the steady-state distribution of S-states under conditions of steady photoinhibition or photoactivation. The improved eigenvalue analysis allowed the calculation of the initial S-state distribution. In addition, the model resolved 'true' photochemical misses from apparent misses due to deactivations in the dark interval between flashes. The model suggested that most of the misses that are commonly reported are due to deactivations, and not to an intrinsic inefficiency of the photochemical mechanism of PS II. Because models that allow double-hits encompassing the S2 to S3 transition often predict negative initial quantities of S2 in cyanobacteria, our proposed model specifically prohibited them. The model accounts for inhomogeneous misses and a steady-state distribution of the type (S2)≈(S1)>(S3)≈(S0). This 5-step model uses only 4 probabilities, and is therefore easy to handle. The use of this model is critical for the analysis of several cyanobacterial strains, as well as for any species that show non-negligible deactivations in the dark interval between flashes.
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