The Mechanism of Cyclic Electron Flow
Biochimica Et Biophysica Acta - Bioenergetics, 2019 Apart from the canonical light-driven linear electron flow (LEF) from water to CO2, numerous regulatory and alternative electron transfer pathways exist in chloroplasts.
Wojciech Nawrocki +2 more
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The plastoquinone pool, poised for cyclic electron flow? [PDF]
Frontiers in Plant Science, 2015 Electron and proton transfer plays a central role in coupling light capture to the chemical reactions of carbon metabolism. Electrons, originating from charge separation in the photosystems, are eventually transferred to NADP+ to form NADPH; it is denoted as linear electron flow (LEF).
Jean eAlric
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Regulation of cyclic electron flow by chloroplast NADPH-dependent thioredoxin system. [PDF]
Plant Direct, 2018 Linear electron transport in the thylakoid membrane drives both photosynthetic NADPH and ATP production, while cyclic electron flow (CEF) around photosystem I only promotes the translocation of protons from stroma to thylakoid lumen. The chloroplast NADH-
Nikkanen L +6 more
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Cyclic electron flow provides acclimatory plasticity for the photosynthetic machinery under various environmental conditions and developmental stages [PDF]
Frontiers in Plant Science, 2015 Photosynthetic electron flow operates in two modes, linear and cyclic. In cyclic electron flow (CEF), electrons are recycled around photosystem I. As a result, a transthylakoid proton gradient (ΔpH) is generated, leading to the production of ATP without ...
Marjaana eSuorsa
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The labile interactions of cyclic electron flow effector proteins. [PDF]
J Biol Chem, 2018 The supramolecular organization of membrane proteins (MPs) is sensitive to environmental changes in photosynthetic organisms. Isolation of MP supercomplexes from the green algae Chlamydomonas reinhardtii, which are believed to contribute to cyclic ...
Buchert F +5 more
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Maximal Cyclic Electron Flow Rate Is Independent of PGRL1 in Chlamydomonas
Biochimica Et Biophysica Acta - Bioenergetics, 2019 Cyclic electron flow (CEF) is defined as a return of the reductants from the acceptor side of Photosystem I (PSI) to the pool of its donors via the cytochrome b6f.
Wojciech Nawrocki +2 more
exaly +6 more sources
Activation of Cyclic Electron Flow by Hydrogen Peroxide in Vivo [PDF]
Proceedings of the National Academy of Sciences of the United States of America, 2015 Significance Cyclic electron flow around photosystem I (CEF) is critical for balancing the energy budget of photosynthesis, but its regulation is not well understood. Our results provide evidence that hydrogen peroxide, which is produced as a result of imbalances in chloroplast redox state, acts as a signaling agent to activate CEF in
Veronica G Maurino +2 more
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A security network in PSI photoprotection: regulation of photosynthetic control, NPQ and O2 photoreduction by cyclic electron flow. [PDF]
Frontiers in Plant Science, 2015 Cyclic Electron Flow (CEF) is a regulator of acceptor-side limitations and has multiple functions in the green alga, Chlamydomonas reinhardtii.
Frédéric eChaux +8 more
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Regulation of cyclic and linear electron flow in higher plants [PDF]
Proceedings of the National Academy of Sciences, 2011 Cyclic electron flow is increasingly recognized as being essential in plant growth, generating a pH gradient across thylakoid membrane (ΔpH) that contributes to ATP synthesis and triggers the protective process of nonphotochemical quenching (NPQ) under stress conditions. Here, we report experiments demonstrating the importance of that ΔpH in protecting
Joliot, Pierre +1 more
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Cyclic Electron Flow-Coupled Proton Pumping in Synechocystis sp. PCC6803 Is Dependent upon NADPH Oxidation by the Soluble Isoform of Ferredoxin:NADP-Oxidoreductase [PDF]
Microorganisms, 2022 Ferredoxin:NADP-oxidoreductase (FNR) catalyzes the reversible exchange of electrons between ferredoxin (Fd) and NADP(H). Reduction of NADP+ by Fd via FNR is essential in the terminal steps of photosynthetic electron transfer, as light-activated electron ...
Neil T. Miller +2 more
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