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Absorption Linear Dichroism Measured Directly on a Single Light-Harvesting System: The Role of Disorder in Chlorosomes of Green Photosynthetic Bacteria
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SYSNO ASEP 0367259 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Absorption Linear Dichroism Measured Directly on a Single Light-Harvesting System: The Role of Disorder in Chlorosomes of Green Photosynthetic Bacteria Tvůrce(i) Furumaki, S. (JP)
Vácha, František (BC-A) RID
Habuchi, S. (JP)
Tsukatani, Y. (US)
Bryant, D.A. (US)
Vácha, M. (JP)Celkový počet autorů 6 Zdroj.dok. Journal of the American Chemical Society. - : American Chemical Society - ISSN 0002-7863
Roč. 133, č. 17 (2011), s. 6703-6710Poč.str. 8 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova CHLOROBIUM-TEPIDUM ; BACTERIOCHLOROPHYLL-C ; SUPRAMOLECULAR ORGANIZATION Vědní obor RIV EF - Botanika CEP GA206/09/0375 GA ČR - Grantová agentura ČR CEZ AV0Z50510513 - UMBR-M, BC-A (2005-2011) UT WOS 000290363400038 DOI 10.1021/ja111475z Anotace Chlorosomes are light-harvesting antennae of photosynthetic bacteria containing large numbers of self-aggregated bacteriochlorophyll (BChl) molecules. They have developed unique photophysical properties that enable them to absorb light and transfer the excitation energy with very high efficiency. However, the molecular-level organization, that produces the photophysical properties of BChl molecules in the aggregates, is still not fully understood. One of the reasons is heterogeneity in the chlorosome structure which gives rise to a hierarchy of structural and energy disorder. In this report, we for the first time directly measure absorption linear dichroism (LD) on individual, isolated chlorosomes. Together with fluorescence-detected three-dimensional LD, these experiments reveal a large amount of disorder on the single-chlorosome level in the form of distributions of LD observables in chlorosomes from wild-type bacterium Chlorobaculum tepidum. Pracoviště Biologické centrum (od r. 2006) Kontakt Dana Hypšová, eje@eje.cz, Tel.: 387 775 214 Rok sběru 2012
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