Distinctive and functional pigment arrangements in Lhcp, a prasinophyte-specific photosynthetic light-harvesting complex.
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| Autores principales: | , , , , , , , , , , , , |
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| Formato: | Artículo científico |
| Lenguaje: | en |
| Publicado: |
Communications biology
2025
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| _version_ | 1868266125107658752 |
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| author | Seki, Soichiro Kubota, Masato Yamano, Nami Kim, Eunchul Ishii, Asako Miyata, Tomoko Tanaka, Hideaki Cogdell, Richard J Zhang, Jian-Ping Namba, Keiichi Kurisu, Genji Minagawa, Jun Fujii, Ritsuko |
| author_facet | Seki, Soichiro Kubota, Masato Yamano, Nami Kim, Eunchul Ishii, Asako Miyata, Tomoko Tanaka, Hideaki Cogdell, Richard J Zhang, Jian-Ping Namba, Keiichi Kurisu, Genji Minagawa, Jun Fujii, Ritsuko Seki, Soichiro Kubota, Masato Yamano, Nami Kim, Eunchul Ishii, Asako Miyata, Tomoko Tanaka, Hideaki Cogdell, Richard J Zhang, Jian-Ping Namba, Keiichi Kurisu, Genji Minagawa, Jun Fujii, Ritsuko |
| collection | PubMed - marine biology |
| contents | Distinctive and functional pigment arrangements in Lhcp, a prasinophyte-specific photosynthetic light-harvesting complex. Seki, Soichiro Kubota, Masato Yamano, Nami Kim, Eunchul Ishii, Asako Miyata, Tomoko Tanaka, Hideaki Cogdell, Richard J Zhang, Jian-Ping Namba, Keiichi Kurisu, Genji Minagawa, Jun Fujii, Ritsuko Light-Harvesting Protein Complexes Photosynthesis Cryoelectron Microscopy Chlorophyta Pigments, Biological Models, Molecular Light harvesting is essential for photosynthesis, and the diversity of light-harvesting systems enables photosynthetic organisms to acquire unique niches and thrive. Prasinophytes are marine green algae that diverge early in the evolution of photosynthetic eukaryotes and use a distinct light-harvesting complex known as Lhcp as their primary antenna. Lhcp consists of proteins and pigments unique to prasinophytes but shares some structural and functional features with the plant-type light-harvesting complex LHCII. Here, we use cryo-electron microscopy to determine the structure of Lhcp from the prasinophyte Ostreococcus tauri at 1.94 Å resolution, revealing all pigments responsible for light harvesting. The results show that the trimeric structure of Lhcp is stabilized by pigments, including a distinctive carotenoid identified as the cis-isomer of esterified antheraxanthin B. Comparison of Lhcp and plant-type LHCII reveals that while their core architecture is conserved, structural differences underlie their functional divergence. This work provides insight into the evolution of light-harvesting systems and highlights how structural diversity contributes to ecological adaptation. |
| format | Artículo científico |
| id | pubmed_41249568 |
| institution | PubMed |
| language | en |
| publishDate | 2025 |
| publisher | Communications biology |
| record_format | pubmed |
| spellingShingle | Distinctive and functional pigment arrangements in Lhcp, a prasinophyte-specific photosynthetic light-harvesting complex. Seki, Soichiro Kubota, Masato Yamano, Nami Kim, Eunchul Ishii, Asako Miyata, Tomoko Tanaka, Hideaki Cogdell, Richard J Zhang, Jian-Ping Namba, Keiichi Kurisu, Genji Minagawa, Jun Fujii, Ritsuko Light-Harvesting Protein Complexes Photosynthesis Cryoelectron Microscopy Chlorophyta Pigments, Biological Models, Molecular Distinctive and functional pigment arrangements in Lhcp, a prasinophyte-specific photosynthetic light-harvesting complex. Seki, Soichiro Kubota, Masato Yamano, Nami Kim, Eunchul Ishii, Asako Miyata, Tomoko Tanaka, Hideaki Cogdell, Richard J Zhang, Jian-Ping Namba, Keiichi Kurisu, Genji Minagawa, Jun Fujii, Ritsuko Light-Harvesting Protein Complexes Photosynthesis Cryoelectron Microscopy Chlorophyta Pigments, Biological Models, Molecular Light harvesting is essential for photosynthesis, and the diversity of light-harvesting systems enables photosynthetic organisms to acquire unique niches and thrive. Prasinophytes are marine green algae that diverge early in the evolution of photosynthetic eukaryotes and use a distinct light-harvesting complex known as Lhcp as their primary antenna. Lhcp consists of proteins and pigments unique to prasinophytes but shares some structural and functional features with the plant-type light-harvesting complex LHCII. Here, we use cryo-electron microscopy to determine the structure of Lhcp from the prasinophyte Ostreococcus tauri at 1.94 Å resolution, revealing all pigments responsible for light harvesting. The results show that the trimeric structure of Lhcp is stabilized by pigments, including a distinctive carotenoid identified as the cis-isomer of esterified antheraxanthin B. Comparison of Lhcp and plant-type LHCII reveals that while their core architecture is conserved, structural differences underlie their functional divergence. This work provides insight into the evolution of light-harvesting systems and highlights how structural diversity contributes to ecological adaptation. |
| title | Distinctive and functional pigment arrangements in Lhcp, a prasinophyte-specific photosynthetic light-harvesting complex. |
| topic | Light-Harvesting Protein Complexes Photosynthesis Cryoelectron Microscopy Chlorophyta Pigments, Biological Models, Molecular |
| url | https://pubmed.ncbi.nlm.nih.gov/41249568/ |