Light Adaptation in Phycobilisome Antennas: Influence on the Rod Length and Structural Arrangement
Phycobilisomes, the light-harvesting antennas of cyanobacteria, can adapt to a wide range of environments thanks to a composition and function response to stress conditions. We study how structural changes influence excitation transfer in these supercomplexes. Specifically, we show the influence of...
| Main Authors: | , , , , , |
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| Format: | Article |
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American Chemical Society (ACS)
2018
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| Online Access: | http://hdl.handle.net/1721.1/118370 https://orcid.org/0000-0001-7616-7809 |
| _version_ | 1826203914938089472 |
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| author | Keren, Nir Paltiel, Yossi Nevo, Reinat Reich, Ziv Chenu, Aurelia Cao, Jianshu |
| author2 | Massachusetts Institute of Technology. Department of Chemistry |
| author_facet | Massachusetts Institute of Technology. Department of Chemistry Keren, Nir Paltiel, Yossi Nevo, Reinat Reich, Ziv Chenu, Aurelia Cao, Jianshu |
| author_sort | Keren, Nir |
| collection | MIT |
| description | Phycobilisomes, the light-harvesting antennas of cyanobacteria, can adapt to a wide range of environments thanks to a composition and function response to stress conditions. We study how structural changes influence excitation transfer in these supercomplexes. Specifically, we show the influence of the rod length on the photon absorption and subsequent excitation transport to the core. Despite the fact that the efficiency of individual disks on the rod decreases with increasing rod length, we find an optimal length for which the average rod efficiency is maximal. Combining this study with experimental structural measurements, we propose models for the arrangement of the phycobiliproteins inside the thylakoid membranes, evaluate the importance of rod length, and predict the corresponding transport properties for different cyanobacterial species. This analysis, which links the functional and structural properties of full phycobilisome complexes, thus provides further rationales to help resolve their exact structure. |
| first_indexed | 2024-09-23T12:45:46Z |
| format | Article |
| id | mit-1721.1/118370 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T12:45:46Z |
| publishDate | 2018 |
| publisher | American Chemical Society (ACS) |
| record_format | dspace |
| spelling | mit-1721.1/1183702022-10-01T10:56:46Z Light Adaptation in Phycobilisome Antennas: Influence on the Rod Length and Structural Arrangement Keren, Nir Paltiel, Yossi Nevo, Reinat Reich, Ziv Chenu, Aurelia Cao, Jianshu Massachusetts Institute of Technology. Department of Chemistry Chenu, Aurelia Cao, Jianshu Phycobilisomes, the light-harvesting antennas of cyanobacteria, can adapt to a wide range of environments thanks to a composition and function response to stress conditions. We study how structural changes influence excitation transfer in these supercomplexes. Specifically, we show the influence of the rod length on the photon absorption and subsequent excitation transport to the core. Despite the fact that the efficiency of individual disks on the rod decreases with increasing rod length, we find an optimal length for which the average rod efficiency is maximal. Combining this study with experimental structural measurements, we propose models for the arrangement of the phycobiliproteins inside the thylakoid membranes, evaluate the importance of rod length, and predict the corresponding transport properties for different cyanobacterial species. This analysis, which links the functional and structural properties of full phycobilisome complexes, thus provides further rationales to help resolve their exact structure. National Science Foundation (U.S.) (Grant CHE-1112825) 2018-10-05T15:06:22Z 2018-10-05T15:06:22Z 2017-09 2017-08 2018-09-25T16:30:09Z Article http://purl.org/eprint/type/JournalArticle 1520-6106 1520-5207 http://hdl.handle.net/1721.1/118370 Chenu, Aurélia et al. “Light Adaptation in Phycobilisome Antennas: Influence on the Rod Length and Structural Arrangement.” The Journal of Physical Chemistry B 121, 39 (September 2017): 9196–9202 © 2017 American Chemical Society https://orcid.org/0000-0001-7616-7809 http://dx.doi.org/10.1021/ACS.JPCB.7B07781 Journal of Physical Chemistry B Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Chemical Society (ACS) arXiv |
| spellingShingle | Keren, Nir Paltiel, Yossi Nevo, Reinat Reich, Ziv Chenu, Aurelia Cao, Jianshu Light Adaptation in Phycobilisome Antennas: Influence on the Rod Length and Structural Arrangement |
| title | Light Adaptation in Phycobilisome Antennas: Influence on the Rod Length and Structural Arrangement |
| title_full | Light Adaptation in Phycobilisome Antennas: Influence on the Rod Length and Structural Arrangement |
| title_fullStr | Light Adaptation in Phycobilisome Antennas: Influence on the Rod Length and Structural Arrangement |
| title_full_unstemmed | Light Adaptation in Phycobilisome Antennas: Influence on the Rod Length and Structural Arrangement |
| title_short | Light Adaptation in Phycobilisome Antennas: Influence on the Rod Length and Structural Arrangement |
| title_sort | light adaptation in phycobilisome antennas influence on the rod length and structural arrangement |
| url | http://hdl.handle.net/1721.1/118370 https://orcid.org/0000-0001-7616-7809 |
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