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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...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
eLife Sciences Publications, Ltd
2015
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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 |
format | Online Article Text |
id | pubmed-4487076 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | eLife Sciences Publications, Ltd |
record_format | MEDLINE/PubMed |
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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