ArticleProceedings of the National Academy of Sciences of the United States of America2017
Inverted-region electron transfer as a mechanism for enhancing photosynthetic solar energy conversion efficiency.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2017. 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, 49 citations in OpenAlex.
- Apparent redistribution of electron flow between redox cofactors branches in photosystem I from the menB variants of cyanobacterium Synechocystis sp. PCC 6803.Photosynthesis research · 2026Article
- Review
- Evidence for Competing Proton-Coupled Reaction Pathways of Molecular Triads in a Low-Polarity Solvent.The journal of physical chemistry. A · 2025Article
- Thermodynamic Factors Controlling Electron Transfer among the Terminal Electron Acceptors of Photosystem I: Insights from Kinetic Modelling.International journal of molecular sciences · 2024Article
- Inverted region in the reaction of the quinone reduction in the APhotosynthesis research · 2024Article
- Time-resolved FTIR difference spectroscopy for the study of photosystem I with high potential naphthoquinones incorporated into the APhotosynthesis research · 2023Article
- How Photoactivation Triggers Protochlorophyllide Reduction: Computational Evidence of a Stepwise Hydride Transfer during Chlorophyll Biosynthesis.ACS catalysis · 2022Article
- Solvent and Temperature Effects on Photoinduced Proton-Coupled Electron Transfer in the Marcus Inverted Region.The journal of physical chemistry. A · 2021Article
- Symmetry breaking in photosystem I: ultrafast optical studies of variants near the accessory chlorophylls in the A- and B-branches of electron transfer cofactors.Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology · 2021Article
- Multifaceted aspects of charge transfer.Physical chemistry chemical physics : PCCP · 2020Article
- Reversible inhibition and reactivation of electron transfer in photosystem I.Photosynthesis research · 2020Article
- Generating dihydrogen by tethering an [FeFe]hydrogenase via a molecular wire to the APhotosynthesis research · 2020Article
- Kinetics and Energetics of Phylloquinone Reduction in Photosystem I: Insight From Modeling of the Site Directed Mutants.Frontiers in plant science · 2019Review
- Photosystem I with benzoquinone analogues incorporated into the APhotosynthesis research · 2018Article
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Authors and funding
2 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
In all photosynthetic organisms, light energy is used to drive electrons from a donor chlorophyll species via a series of acceptors across a biological membrane. These light-induced electron-transfer processes display a remarkably high quantum efficiency, indicating a near-complete inhibition of unproductive charge recombination reactions. It has been suggested that unproductive charge recombination could be inhibited if the reaction occurs in the so-called inverted region. However, inverted-region electron transfer has never been demonstrated in any native photosynthetic system. Here we demonstrate that the unproductive charge recombination in native photosystem I photosynthetic reaction centers does occur in the inverted region, at both room and cryogenic temperatures. Computational modeling of light-induced electron-transfer processes in photosystem I demonstrate a marked decrease in photosynthetic quantum efficiency, from 98% to below 72%, if the unproductive charge recombination process does not occur in the inverted region. Inverted-region electron transfer is therefore demonstrated to be an important mechanism contributing to efficient solar energy conversion in photosystem I. Inverted-region electron transfer does not appear to be an important mechanism in other photosystems; it is likely because of the highly reducing nature of photosystem I, and the energetic requirements placed on the pigments to operate in such a regime, that the inverted-region electron transfer mechanism becomes important.
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