Minding the Gap between Plant and Bacterial Photosynthesis within a Self-Assembling Biohybrid Photosystem
| Autor: | Judith Mantell, Juntai Liu, Michael R. Jones |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Light
Arabidopsis Light-Harvesting Protein Complexes General Physics and Astronomy quantum dots 02 engineering and technology Rhodobacter sphaeroides 010402 general chemistry Photosynthesis 01 natural sciences Thylakoids Light-harvesting complex chemistry.chemical_compound light harvesting solar energy conversion Energy transformation General Materials Science Photosystem photosynthesis biology General Engineering self-assembly 021001 nanoscience & nanotechnology biology.organism_classification Anoxygenic photosynthesis 0104 chemical sciences chemistry Energy Transfer Chlorophyll Biophysics Bacteriochlorophyll 0210 nano-technology biohybrid |
| Zdroj: | Liu, J, Mantell, J & Jones, M R 2020, ' Minding the Gap between Plant and Bacterial Photosynthesis within a Self-Assembling Biohybrid Photosystem ', ACS Nano, vol. 14, 4, pp. 4536-4549 . https://doi.org/10.1021/acsnano.0c00058 |
| Popis: | Many strategies for meeting mankind's future energy demands through the exploitation of plentiful solar energy have been influenced by the efficient and sustainable processes of natural photosynthesis. A limitation affecting solar energy conversion based on photosynthetic proteins is the selective spectral coverage that is the consequence of their particular natural pigmentation. Here we demonstrate the bottom-up formation of semisynthetic, polychromatic photosystems in mixtures of the chlorophyll-based LHCII major light harvesting complex from the oxygenic green plant Arabidopsis thaliana, the bacteriochlorophyll-based photochemical reaction center (RC) from the anoxygenic purple bacterium Rhodobacter sphaeroides and synthetic quantum dots (QDs). Polyhistidine tag adaptation of LHCII and the RC enabled predictable self-assembly of LHCII/RC/QD nanoconjugates, the thermodynamics of which could be accurately modeled and parametrized. The tricomponent biohybrid photosystems displayed enhanced solar energy conversion via either direct chlorophyll-to-bacteriochlorophyll energy transfer or an indirect pathway enabled by the QD, with an overall energy transfer efficiency comparable to that seen in natural photosystems. |
| Databáze: | OpenAIRE |
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