2D Electronic Spectroscopy Reveals Excitonic Structure in the Baseplate of a Chlorosome

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F14%3A10286214" target="_blank" >RIV/00216208:11320/14:10286214 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60076658:12310/14:43887165

Výsledek na webu

<a href="http://dx.doi.org/10.1021/jz5005279" target="_blank" >http://dx.doi.org/10.1021/jz5005279</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/jz5005279" target="_blank" >10.1021/jz5005279</a>

Jazyk výsledku

angličtina

Název v původním jazyce

2D Electronic Spectroscopy Reveals Excitonic Structure in the Baseplate of a Chlorosome

Popis výsledku v původním jazyce

In green photosynthetic bacteria, the chlorosome baseplate mediates excitation energy transfer from the interior of the light-harvesting chlorosome toward the reaction centers. However, the electronic states of the baseplate remain unexplored, hinderingthe mechanistic understanding of the baseplate as an excitation energy collector and mediator. Here we use two-dimensional spectroscopy to study the excited state structure and internal energy relaxation in the baseplate of green sulfur bacterium Chlorobaculum tepidum. We resolved an exciton system with four energy states, indicating that the organization of the pigments in the baseplate is more complex than was thought before and constitutes at least four bacteriochlorophyll molecules in a close contact. Based on the finding that the energy of the baseplate states is in the same range as in the adjacent Fenna-Matthews-Olson complex, we propose a "lateral" energy transfer pathway, where excitation energy can flow through the photosynthe

Název v anglickém jazyce

2D Electronic Spectroscopy Reveals Excitonic Structure in the Baseplate of a Chlorosome

Popis výsledku anglicky

In green photosynthetic bacteria, the chlorosome baseplate mediates excitation energy transfer from the interior of the light-harvesting chlorosome toward the reaction centers. However, the electronic states of the baseplate remain unexplored, hinderingthe mechanistic understanding of the baseplate as an excitation energy collector and mediator. Here we use two-dimensional spectroscopy to study the excited state structure and internal energy relaxation in the baseplate of green sulfur bacterium Chlorobaculum tepidum. We resolved an exciton system with four energy states, indicating that the organization of the pigments in the baseplate is more complex than was thought before and constitutes at least four bacteriochlorophyll molecules in a close contact. Based on the finding that the energy of the baseplate states is in the same range as in the adjacent Fenna-Matthews-Olson complex, we propose a "lateral" energy transfer pathway, where excitation energy can flow through the photosynthe

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BO - Biofyzika

OECD FORD obor

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Projekt

<a href="/cs/project/GBP501%2F12%2FG055" target="_blank" >GBP501/12/G055: Centrum fotosyntetického výzkumu</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Physical Chemistry Letters

ISSN

1948-7185

e-ISSN

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Svazek periodika

5

Číslo periodika v rámci svazku

10

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

5

Strana od-do

1743-1747

Kód UT WoS článku

000336199000022

EID výsledku v databázi Scopus

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