ArticleACS applied materials & interfaces2017
Cytochrome c Provides an Electron-Funneling Antenna for Efficient Photocurrent Generation in a Reaction Center Biophotocathode.
Article in ACS applied materials & interfaces, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed, 41 citations in OpenAlex.
- Photosystem-Based Biophotoelectrodes for Solar Energy Conversion.Chemical reviews · 2026Article
- 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
- The Role of Electrostatic Binding Interfaces in the Performance of Bacterial Reaction Center Biophotoelectrodes.ACS sustainable chemistry & engineering · 2023Article
- Sustaining Electron Transfer Pathways Extends Biohybrid Photoelectrode Stability to Years.Angewandte Chemie (International ed. in English) · 2022Article
- Stabilisierung von Elektronentransferwegen erlaubt Stabilität von Biohybrid-Photoelektroden über Jahre.Angewandte Chemie (Weinheim an der Bergstrasse, Germany) · 2022Article
- Photosystem II in bio-photovoltaic devices.Photosynthetica · 2022Review
- Correlating structural assemblies of photosynthetic reaction centers on a gold electrode and the photocurrent - potential response.iScience · 2021Article
- Polychromatic solar energy conversion in pigment-protein chimeras that unite the two kingdoms of (bacterio)chlorophyll-based photosynthesis.Nature communications · 2020Article
- Engineered photoproteins that give rise to photosynthetically-incompetent bacteria are effective as photovoltaic materials for biohybrid photoelectrochemical cells.Faraday discussions · 2018Article
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Authors and funding
5 authors at 1 institution in 1 country.
Funding
Abstract
The high quantum efficiency of photosynthetic reaction centers (RCs) makes them attractive for bioelectronic and biophotovoltaic applications. However, much of the native RC efficiency is lost in communication between surface-bound RCs and electrode materials. The state-of-the-art biophotoelectrodes utilizing cytochrome c (cyt c) as a biological wiring agent have at best approached 32% retained RC quantum efficiency. However, bottlenecks in cyt c-mediated electron transfer have not yet been fully elucidated. In this work, protein film voltammetry in conjunction with photoelectrochemistry is used to show that cyt c acts as an electron-funneling antennae that shuttle electrons from a functionalized rough silver electrode to surface-immobilized RCs. The arrangement of the two proteins on the electrode surface is characterized, revealing that RCs attached directly to the electrode via hydrophobic interactions and that a film of six cyt c per RC electrostatically bound to the electrode. We show that the additional electrical connectivity within a film of cyt c improves the high turnover demands of surface-bound RCs. This results in larger photocurrent onset potentials, positively shifted half-wave reduction potentials, and higher photocurrent densities reaching 100 μA cm
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