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A perspective on the major light-harvesting complex dynamics under the effect of pH, salts, and the photoprotective PsbS protein

The photosynthetic apparatus is a highly modular assembly of large pigment-binding proteins. Complexes called antennae can capture the sunlight and direct it from the periphery of two Photosystems (I, II) to the core reaction centers, where it is converted into chemical energy. The apparatus must co...

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Autores principales: Navakoudis, Eleni, Stergiannakos, Taxiarchis, Daskalakis, Vangelis
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Netherlands 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10070230/
https://www.ncbi.nlm.nih.gov/pubmed/35816266
http://dx.doi.org/10.1007/s11120-022-00935-6
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author Navakoudis, Eleni
Stergiannakos, Taxiarchis
Daskalakis, Vangelis
author_facet Navakoudis, Eleni
Stergiannakos, Taxiarchis
Daskalakis, Vangelis
author_sort Navakoudis, Eleni
collection PubMed
description The photosynthetic apparatus is a highly modular assembly of large pigment-binding proteins. Complexes called antennae can capture the sunlight and direct it from the periphery of two Photosystems (I, II) to the core reaction centers, where it is converted into chemical energy. The apparatus must cope with the natural light fluctuations that can become detrimental to the viability of the photosynthetic organism. Here we present an atomic scale view of the photoprotective mechanism that is activated on this line of defense by several photosynthetic organisms to avoid overexcitation upon excess illumination. We provide a complete macroscopic to microscopic picture with specific details on the conformations of the major antenna of Photosystem II that could be associated with the switch from the light-harvesting to the photoprotective state. This is achieved by combining insight from both experiments and all-atom simulations from our group and the literature in a perspective article.
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spelling pubmed-100702302023-04-05 A perspective on the major light-harvesting complex dynamics under the effect of pH, salts, and the photoprotective PsbS protein Navakoudis, Eleni Stergiannakos, Taxiarchis Daskalakis, Vangelis Photosynth Res Review The photosynthetic apparatus is a highly modular assembly of large pigment-binding proteins. Complexes called antennae can capture the sunlight and direct it from the periphery of two Photosystems (I, II) to the core reaction centers, where it is converted into chemical energy. The apparatus must cope with the natural light fluctuations that can become detrimental to the viability of the photosynthetic organism. Here we present an atomic scale view of the photoprotective mechanism that is activated on this line of defense by several photosynthetic organisms to avoid overexcitation upon excess illumination. We provide a complete macroscopic to microscopic picture with specific details on the conformations of the major antenna of Photosystem II that could be associated with the switch from the light-harvesting to the photoprotective state. This is achieved by combining insight from both experiments and all-atom simulations from our group and the literature in a perspective article. Springer Netherlands 2022-07-10 2023 /pmc/articles/PMC10070230/ /pubmed/35816266 http://dx.doi.org/10.1007/s11120-022-00935-6 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Review
Navakoudis, Eleni
Stergiannakos, Taxiarchis
Daskalakis, Vangelis
A perspective on the major light-harvesting complex dynamics under the effect of pH, salts, and the photoprotective PsbS protein
title A perspective on the major light-harvesting complex dynamics under the effect of pH, salts, and the photoprotective PsbS protein
title_full A perspective on the major light-harvesting complex dynamics under the effect of pH, salts, and the photoprotective PsbS protein
title_fullStr A perspective on the major light-harvesting complex dynamics under the effect of pH, salts, and the photoprotective PsbS protein
title_full_unstemmed A perspective on the major light-harvesting complex dynamics under the effect of pH, salts, and the photoprotective PsbS protein
title_short A perspective on the major light-harvesting complex dynamics under the effect of pH, salts, and the photoprotective PsbS protein
title_sort perspective on the major light-harvesting complex dynamics under the effect of ph, salts, and the photoprotective psbs protein
topic Review
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10070230/
https://www.ncbi.nlm.nih.gov/pubmed/35816266
http://dx.doi.org/10.1007/s11120-022-00935-6
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