دورية أكاديمية
Light-Quality-Adapted Carotenoid Photoprotection in the Photosystem of Roseiflexus castenholzii .
| العنوان: | Light-Quality-Adapted Carotenoid Photoprotection in the Photosystem of Roseiflexus castenholzii . |
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| المؤلفون: | Hao JF; Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China, Beijing 100872, P. R. China., Qi CH; Photosynthesis Research Center, Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, P. R. China., Yu BY; National Laboratory of Solid State Microstructures & School of Physics, Nanjing University, Nanjing 210093, China., Wang HY; Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China, Beijing 100872, P. R. China., Gao RY; Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China, Beijing 100872, P. R. China., Yamano N; Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China, Beijing 100872, P. R. China., Ma F; Photosynthesis Research Center, Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, P. R. China., Wang P; Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China, Beijing 100872, P. R. China., Xin YY; Hangzhou Normal University, 2318 Yuhangtang Road, Cangqian, Yuhang District, Hangzhou 311121, Zhejiang, China., Zhang CF; National Laboratory of Solid State Microstructures & School of Physics, Nanjing University, Nanjing 210093, China., Yu LJ; Photosynthesis Research Center, Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, P. R. China., Zhang JP; Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China, Beijing 100872, P. R. China. |
| المصدر: | The journal of physical chemistry letters [J Phys Chem Lett] 2024 Mar 28; Vol. 15 (12), pp. 3470-3477. Date of Electronic Publication: 2024 Mar 21. |
| نوع المنشور: | Journal Article |
| اللغة: | English |
| بيانات الدورية: | Publisher: American Chemical Society Country of Publication: United States NLM ID: 101526034 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1948-7185 (Electronic) Linking ISSN: 19487185 NLM ISO Abbreviation: J Phys Chem Lett Subsets: MEDLINE |
| أسماء مطبوعة: | Original Publication: Washington, D.C. : American Chemical Society |
| مواضيع طبية MeSH: | Chloroflexi*/chemistry , Chloroflexi*/metabolism, Carotenoids ; Light-Harvesting Protein Complexes/chemistry ; Photosynthesis ; Bacteriochlorophylls/metabolism ; Bacterial Proteins/chemistry |
| مستخلص: | The photosystem of filamentous anoxygenic phototroph Roseiflexus ( Rfl .) castenholzii comprises a light-harvesting (LH) complex encircling a reaction center (RC), which intensely absorbs blue-green light by carotenoid (Car) and near-infrared light by bacteriochlorophyll (BChl). To explore the influence of light quality (color) on the photosynthetic activity, we compared the pigment compositions and triplet excitation dynamics of the LH-RCs from Rfl . castenholzii was adapted to blue-green light ( bg -LH-RC) and to near-infrared light ( nir -LH-RC). Both LH-RCs bind γ-carotene derivatives; however, compared to that of nir -LH-RC (12%), bg -LH-RC contains substantially higher keto-γ-carotene content (43%) and shows considerably faster BChl-to-Car triplet excitation transfer (10.9 ns vs 15.0 ns). For bg -LH-RC, but not nir -LH-RC, selective photoexcitation of Car and the 800 nm-absorbing BChl led to Car-to-Car triplet transfer and BChl-Car singlet fission reactions, respectively. The unique excitation dynamics of bg -LH-RC enhances its photoprotection, which is crucial for the survival of aquatic anoxygenic phototrophs from photooxidative stress. |
| المشرفين على المادة: | 36-88-4 (Carotenoids) 0 (Light-Harvesting Protein Complexes) 0 (Bacteriochlorophylls) 0 (Bacterial Proteins) |
| SCR Organism: | Roseiflexus castenholzii |
| تواريخ الأحداث: | Date Created: 20240321 Date Completed: 20240329 Latest Revision: 20240329 |
| رمز التحديث: | 20240329 |
| DOI: | 10.1021/acs.jpclett.4c00593 |
| PMID: | 38512331 |
| قاعدة البيانات: | MEDLINE |
Find this issue from the American Chemical Society | تدمد: | 1948-7185 |
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| DOI: | 10.1021/acs.jpclett.4c00593 |