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The structure of plant photosystem I super-complex at 2.8 Å resolution

Most life forms on Earth are supported by solar energy harnessed by oxygenic photosynthesis. In eukaryotes, photosynthesis is achieved by large membrane-embedded super-complexes, containing reaction centers and connected antennae. Here, we report the structure of the higher plant PSI-LHCI super-comp...

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Detalles Bibliográficos
Autores principales: Mazor, Yuval, Borovikova, Anna, Nelson, Nathan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: eLife Sciences Publications, Ltd 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4487076/
https://www.ncbi.nlm.nih.gov/pubmed/26076232
http://dx.doi.org/10.7554/eLife.07433
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author Mazor, Yuval
Borovikova, Anna
Nelson, Nathan
author_facet Mazor, Yuval
Borovikova, Anna
Nelson, Nathan
author_sort Mazor, Yuval
collection PubMed
description Most life forms on Earth are supported by solar energy harnessed by oxygenic photosynthesis. In eukaryotes, photosynthesis is achieved by large membrane-embedded super-complexes, containing reaction centers and connected antennae. Here, we report the structure of the higher plant PSI-LHCI super-complex determined at 2.8 Å resolution. The structure includes 16 subunits and more than 200 prosthetic groups, which are mostly light harvesting pigments. The complete structures of the four LhcA subunits of LHCI include 52 chlorophyll a and 9 chlorophyll b molecules, as well as 10 carotenoids and 4 lipids. The structure of PSI-LHCI includes detailed protein pigments and pigment–pigment interactions, essential for the mechanism of excitation energy transfer and its modulation in one of nature's most efficient photochemical machines. DOI: http://dx.doi.org/10.7554/eLife.07433.001
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spelling pubmed-44870762015-07-02 The structure of plant photosystem I super-complex at 2.8 Å resolution Mazor, Yuval Borovikova, Anna Nelson, Nathan eLife Biophysics and Structural Biology Most life forms on Earth are supported by solar energy harnessed by oxygenic photosynthesis. In eukaryotes, photosynthesis is achieved by large membrane-embedded super-complexes, containing reaction centers and connected antennae. Here, we report the structure of the higher plant PSI-LHCI super-complex determined at 2.8 Å resolution. The structure includes 16 subunits and more than 200 prosthetic groups, which are mostly light harvesting pigments. The complete structures of the four LhcA subunits of LHCI include 52 chlorophyll a and 9 chlorophyll b molecules, as well as 10 carotenoids and 4 lipids. The structure of PSI-LHCI includes detailed protein pigments and pigment–pigment interactions, essential for the mechanism of excitation energy transfer and its modulation in one of nature's most efficient photochemical machines. DOI: http://dx.doi.org/10.7554/eLife.07433.001 eLife Sciences Publications, Ltd 2015-06-15 /pmc/articles/PMC4487076/ /pubmed/26076232 http://dx.doi.org/10.7554/eLife.07433 Text en © 2015, Mazor et al http://creativecommons.org/licenses/by/4.0/ This article is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use and redistribution provided that the original author and source are credited.
spellingShingle Biophysics and Structural Biology
Mazor, Yuval
Borovikova, Anna
Nelson, Nathan
The structure of plant photosystem I super-complex at 2.8 Å resolution
title The structure of plant photosystem I super-complex at 2.8 Å resolution
title_full The structure of plant photosystem I super-complex at 2.8 Å resolution
title_fullStr The structure of plant photosystem I super-complex at 2.8 Å resolution
title_full_unstemmed The structure of plant photosystem I super-complex at 2.8 Å resolution
title_short The structure of plant photosystem I super-complex at 2.8 Å resolution
title_sort structure of plant photosystem i super-complex at 2.8 å resolution
topic Biophysics and Structural Biology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4487076/
https://www.ncbi.nlm.nih.gov/pubmed/26076232
http://dx.doi.org/10.7554/eLife.07433
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