Carotenoids in Energy Transfer and Quenching Processes in Pcb and Pcb-PS I Complexes from Prochlorothrix hollandica

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12310%2F10%3A00011884" target="_blank" >RIV/60076658:12310/10:00011884 - isvavai.cz</a>

Alternative codes found

RIV/60076658:12640/10:00012191 RIV/60077344:_____/10:00345900

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Carotenoids in Energy Transfer and Quenching Processes in Pcb and Pcb-PS I Complexes from Prochlorothrix hollandica

Original language description

Chlorophyll (Chl) a/b-binding proteins from Prochlorothrix hollandica known as Pcb antennae were studied by femtosecond transient absorption technique to identify energy transfer rates and pathways in Pcb and Pcb PS I complexes. Carotenoids transfer energy to Chl with low efficiency of similar to 25% in Pcb complexes. Interestingly, analysis of transient absorption spectra identified a pathway from the hot S-1 state of zeaxanthin and/or beta-carotene as the major energy transfer channel between carotenoids and chlorophylls in Pcb whereas the S-2 state contributes only marginally to energy transfer. Due to energetic reasons, no energy transfer is possible via the relaxed S-1 state of carotenoids. The low overall energy transfer efficiency of carotenoidsrecognizes chlorophylls as the main light-harvesting pigments. Besides Chl a, presence of Chl h, which transfers energy to Chl a with nearly 100% efficiency, significantly broadens the spectral range accessible for light-harvesting and i

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

CE - Biochemistry

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2010

Confidentiality

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

Name of the periodical

Journal of Physical Chemistry B

ISSN

1520-6106

e-ISSN

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Volume of the periodical

114

Issue of the periodical within the volume

28

Country of publishing house

US - UNITED STATES

Number of pages

8

Pages from-to

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UT code for WoS article

000279787400022

EID of the result in the Scopus database

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