Academic Journal
The 2.4 Å cryo-EM structure of a heptameric light-harvesting 2 complex reveals two carotenoid energy transfer pathways
| العنوان: | The 2.4 Å cryo-EM structure of a heptameric light-harvesting 2 complex reveals two carotenoid energy transfer pathways |
|---|---|
| المؤلفون: | Gardiner, A.T., Naydenova, K., Castro-Hartmann, P., Nguyen-Phan, T.C., Russo, C.J., Sader, K., Hunter, C.N., Cogdell, R.J., Qian, P. |
| بيانات النشر: | American Association for the Advancement of Science (AAAS) |
| سنة النشر: | 2021 |
| المجموعة: | White Rose Research Online (Universities of Leeds, Sheffield & York) |
| الوصف: | We report the 2.4 Ångström resolution structure of the light-harvesting 2 (LH2) complex from Marichromatium (Mch.) purpuratum determined by cryogenic electron microscopy. The structure contains a heptameric ring that is unique among all known LH2 structures, explaining the unusual spectroscopic properties of this bacterial antenna complex. We identify two sets of distinct carotenoids in the structure and describe a network of energy transfer pathways from the carotenoids to bacteriochlorophyll a molecules. The geometry imposed by the heptameric ring controls the resonant coupling of the long-wavelength energy absorption band. Together, these details reveal key aspects of the assembly and oligomeric form of purple bacterial LH2 complexes that were previously inaccessible by any technique. |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | text |
| اللغة: | English |
| Relation: | https://eprints.whiterose.ac.uk/180784/1/The%202.4%20%C3%85%20cryo-EM%20structure%20of%20a%20heptameric%20light-harvesting%202%20complex%20reveals%20two%20carotenoid%20energy%20transfer%20pathways.pdf; Gardiner, A.T., Naydenova, K., Castro-Hartmann, P. et al. (6 more authors) (2021) The 2.4 Å cryo-EM structure of a heptameric light-harvesting 2 complex reveals two carotenoid energy transfer pathways. Science Advances, 7 (7). eabe4650. |
| الاتاحة: | https://eprints.whiterose.ac.uk/180784/ https://eprints.whiterose.ac.uk/180784/1/The%202.4%20%C3%85%20cryo-EM%20structure%20of%20a%20heptameric%20light-harvesting%202%20complex%20reveals%20two%20carotenoid%20energy%20transfer%20pathways.pdf |
| Rights: | cc_by_4 |
| رقم الانضمام: | edsbas.DEE981B9 |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |