دورية أكاديمية
Carotenoid-Mediated Long-Range Energy Transfer in the Light Harvesting-Reaction Center Complex from Photosynthetic Bacterium Roseiflexus castenholzii .
| العنوان: | Carotenoid-Mediated Long-Range Energy Transfer in the Light Harvesting-Reaction Center Complex from Photosynthetic Bacterium 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., Yamano N; 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., Zhang Y; 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., 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. B [J Phys Chem B] 2023 Dec 07; Vol. 127 (48), pp. 10360-10369. Date of Electronic Publication: 2023 Nov 20. |
| نوع المنشور: | Journal Article |
| اللغة: | English |
| بيانات الدورية: | Publisher: American Chemical Society Country of Publication: United States NLM ID: 101157530 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1520-5207 (Electronic) Linking ISSN: 15205207 NLM ISO Abbreviation: J Phys Chem B Subsets: MEDLINE |
| أسماء مطبوعة: | Original Publication: Washington, D.C. : American Chemical Society, c1997- |
| مواضيع طبية MeSH: | Photosynthesis* , Chloroflexi*/chemistry , Chloroflexi*/metabolism, Carotenoids/metabolism ; Energy Transfer ; Light-Harvesting Protein Complexes/chemistry ; Bacteriochlorophylls/chemistry ; Bacterial Proteins/chemistry ; Light |
| مستخلص: | The light harvesting-reaction center complex (LH-RC) of Roseiflexus castenholzii binds bacteriochlorophylls a (BChls a ), B800 and B880, absorbing around 800 and 880 nm, respectively. We comparatively investigated the interband excitation energy transfer (EET) dynamics of the wild-type LH-RC (wt - LH-RC) of Rfl . castenholzii and its carotenoid (Car)-less mutant (m-LH-RC) and found that Car can boost the B800 → B880 EET rate from (2.43 ps) -1 to (1.75 ps) -1 , accounting for 38% acceleration of the EET process. Interestingly, photoexcitation of wt - LH-RC at 800 nm induced pronounced excitation dynamics of Car despite the insufficient photon energy for direct Car excitation, a phenomenon which is attributed to the BChl-Car exciplex 1 [B800(↑↑)···Car(↓↓)]*. Such an exciplex is suggested to play an essential role in promoting the B800 → B880 EET process, as corroborated by the recently reported cryo-EM structures of wt - LH-RC and m - LH-RC. The mechanism of Car-mediated EET will be helpful to deepen the understanding of the role of Car in bacterial photosynthesis. |
| 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: 20231120 Date Completed: 20231211 Latest Revision: 20231211 |
| رمز التحديث: | 20231215 |
| DOI: | 10.1021/acs.jpcb.3c07087 |
| PMID: | 37983555 |
| قاعدة البيانات: | MEDLINE |
Find this issue from the American Chemical Society | تدمد: | 1520-5207 |
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| DOI: | 10.1021/acs.jpcb.3c07087 |