ArticleNature communications2015
Demonstration of asymmetric electron conduction in pseudosymmetrical photosynthetic reaction centre proteins in an electrical circuit.
Article in Nature communications, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- Photosystem-Based Biophotoelectrodes for Solar Energy Conversion.Chemical reviews · 2026Article
- Correlating structural assemblies of photosynthetic reaction centers on a gold electrode and the photocurrent - potential response.iScience · 2021Article
- On the performance of a photosystem II reaction centre-based photocell.Chemical science · 2017Article
- Mechanically Controlled Electron Transfer in a Single-Polypeptide Transistor.Scientific reports · 2017Article
- The Roles of Biofilm Conductivity and Donor Substrate Kinetics in a Mixed-Culture Biofilm Anode.Environmental science & technology · 2016Article
- Ultrafast Spectroscopy with Photocurrent Detection: Watching Excitonic Optoelectronic Systems at Work.The journal of physical chemistry letters · 2016Article
Corrections and comments
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Authors and funding
6 authors.
Funding
Abstract
Photosynthetic reaction centres show promise for biomolecular electronics as nanoscale solar-powered batteries and molecular diodes that are amenable to atomic-level re-engineering. In this work the mechanism of electron conduction across the highly tractable Rhodobacter sphaeroides reaction centre is characterized by conductive atomic force microscopy. We find, using engineered proteins of known structure, that only one of the two cofactor wires connecting the positive and negative termini of this reaction centre is capable of conducting unidirectional current under a suitably oriented bias, irrespective of the magnitude of the bias or the applied force at the tunnelling junction. This behaviour, strong functional asymmetry in a largely symmetrical protein-cofactor matrix, recapitulates the strong functional asymmetry characteristic of natural photochemical charge separation, but it is surprising given that the stimulus for electron flow is simply an externally applied bias. Reasons for the electrical resistance displayed by the so-called B-wire of cofactors are explored.
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Registered trials
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