ArticleBiochimica et biophysica acta2016
Photocurrents from photosystem II in a metal oxide hybrid system: Electron transfer pathways.
Article in Biochimica et biophysica acta, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.
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Who cites it
15 citing papers in PubMed, 40 citations in OpenAlex.
- Photosystem-Based Biophotoelectrodes for Solar Energy Conversion.Chemical reviews · 2026Article
- Review
- Photocurrent Generation by Plant Light-Harvesting Complexes is Enhanced by Lipid-Linked Chromophores in a Self-Assembled Lipid Membrane.The journal of physical chemistry. B · 2025Article
- Extremozyme-Based Biosensors for Environmental Pollution Monitoring: Recent Developments.Biosensors · 2024Review
- Photosystem II for photoelectrochemical hydrogen production.Biophysical reviews · 2023Review
- Effects of Novel Photosynthetic Inhibitor [CuLCells · 2022Article
- The coupled photocycle of phenyl-p-benzoquinone and Light-Harvesting Complex II (LHCII) within the biohybrid system.Scientific reports · 2022Article
- The Interaction of Water-Soluble Nitroxide Radicals with Photosystem II.Applied magnetic resonance · 2022Article
- Photosystem II in bio-photovoltaic devices.Photosynthetica · 2022Review
- LPA2 protein is involved in photosystem II assembly in Chlamydomonas reinhardtii.The Plant journal : for cell and molecular biology · 2021Article
- Enhanced interfacial electron transfer between thylakoids and RuOScience advances · 2021Article
- Photovoltage generation by photosystem II core complexes immobilized onto a Millipore filter on an indium tin oxide electrode.Journal of bioenergetics and biomembranes · 2020Article
- Structure-Activity Relationships of Hierarchical Three-Dimensional Electrodes with Photosystem II for Semiartificial Photosynthesis.Nano letters · 2019Article
- Oxygenic Photoreactivity in Photosystem II Studied by Rotating Ring Disk Electrochemistry.Journal of the American Chemical Society · 2018Article
- On the performance of a photosystem II reaction centre-based photocell.Chemical science · 2017Article
Corrections and comments
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Authors and funding
6 authors at 1 institution in 1 country.
Funding
Abstract
We have investigated the nature of the photocurrent generated by Photosystem II (PSII), the water oxidizing enzyme, isolated from Thermosynechococcus elongatus, when immobilized on nanostructured titanium dioxide on an indium tin oxide electrode (TiO2/ITO). We investigated the properties of the photocurrent from PSII when immobilized as a monolayer versus multilayers, in the presence and absence of an inhibitor that binds to the site of the exchangeable quinone (QB) and in the presence and absence of exogenous mobile electron carriers (mediators). The findings indicate that electron transfer occurs from the first quinone (QA) directly to the electrode surface but that the electron transfer through the nanostructured metal oxide is the rate-limiting step. Redox mediators enhance the photocurrent by taking electrons from the nanostructured semiconductor surface to the ITO electrode surface not from PSII. This is demonstrated by photocurrent enhancement using a mediator incapable of accepting electrons from PSII. This model for electron transfer also explains anomalies reported in the literature using similar and related systems. The slow rate of the electron transfer step in the TiO2 is due to the energy level of electron injection into the semiconducting material being below the conduction band. This limits the usefulness of the present hybrid electrode. Strategies to overcome this kinetic limitation are discussed.
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