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Photosynthetic pigment-protein complexes as highly-connected networks : implications for robust energy transport
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Habershon, Scott and Baker, Lewis A. (2017) Photosynthetic pigment-protein complexes as highly-connected networks : implications for robust energy transport. Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 473 (2201). doi:10.1098/rspa.2017.0112
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Official URL: http://doi.org/10.1098/rspa.2017.0112
Abstract
Photosynthetic pigment-protein complexes (PPCs) are a vital component of the light-harvesting machinery of all plants and photosynthesising bacteria, enabling efficient transport of the energy of absorbed light towards the reaction centre, where chemical energy storage is initiated. PPCs comprise a set of chromophore molecules, typically bacteriochlorophyll species, held in a well-defined arrangement by a protein scaffold; this relatively rigid distribution leads to a viewpoint in which the chromophore subsystem is treated as a network, where chromophores represent vertices and inter-chromophore electronic couplings represent edges. This graph-based view can then be used as a framework within which to interrogate the role of structural and electronic organization in PPCs. Here, we use this network-based viewpoint to compare EET dynamics in the light-harvesting complex II (LHC-II) system commonly found in higher plants and the Fenna-Matthews-Olson (FMO) complex found in green sulfur bacteria. The results of our simple network-based investigations clearly demonstrate the role of network connectivity and multiple EET pathways on the efficient and robust EET dynamics in these PPCs, and highlight a role for such considerations in the development of new artificial light-harvesting systems.
Item Type: | Journal Item | ||||||||
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Subjects: | Q Science > QC Physics Q Science > QK Botany Q Science > QR Microbiology |
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Chemistry Faculty of Science, Engineering and Medicine > Science > Centre for Scientific Computing |
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Library of Congress Subject Headings (LCSH): | Photosynthesis -- Industrial applications, Photosynthetic bacteria, Quantum theory | ||||||||
Journal or Publication Title: | Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences | ||||||||
Publisher: | The Royal Society Publishing | ||||||||
ISSN: | 1364-5021 | ||||||||
Official Date: | 31 May 2017 | ||||||||
Dates: |
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Volume: | 473 | ||||||||
Number: | 2201 | ||||||||
DOI: | 10.1098/rspa.2017.0112 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||
Date of first compliant deposit: | 19 July 2017 | ||||||||
Date of first compliant Open Access: | 19 July 2017 | ||||||||
Funder: | Engineering and Physical Sciences Research Council (EPSRC), University of Warwick. Molecular Organisation and Assembly in Cells (MOAC) | ||||||||
Grant number: | EP/F500378/1, EP/K000128/1 (EPSRC) |
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