Carotenoid-chlorophyll energy transfer in the fucoxanthin-chlorophyll complex binding a fucoxanthin acyloxy derivative
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12310%2F19%3A43899310" target="_blank" >RIV/60076658:12310/19:43899310 - isvavai.cz</a>
Alternative codes found
RIV/60077344:_____/19:00511275
Result on the web
<a href="https://pubs.rsc.org/en/content/articlelanding/2019/fd/c8fd00193f/unauth#!divAbstract" target="_blank" >https://pubs.rsc.org/en/content/articlelanding/2019/fd/c8fd00193f/unauth#!divAbstract</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1039/c8fd00193f" target="_blank" >10.1039/c8fd00193f</a>
Alternative languages
Result language
angličtina
Original language name
Carotenoid-chlorophyll energy transfer in the fucoxanthin-chlorophyll complex binding a fucoxanthin acyloxy derivative
Original language description
The fucoxanthin-chlorophyll a protein from Emiliania huxleyi (E-FCP) is a member of the LHC family of light-harvesting proteins. It has a rather unusual pigment composition as its binds more Chl-c than Chl-a, and 19 '-hexanoyloxyfucoxanthin (hFx) as the main carotenoid instead of fucoxanthin (Fx) typically found in various FCP complexes. The presence of a hexanoyloxy tail in hFx suppresses the charge transfer character of the S-1/ICT state resulting in almost no effect of polarity on the excited state dynamics of hFx, strongly contrasting with the excited-state properties of Fx. Here we report on the dynamics of the energy transfer between hFx and Chl in E-FCP, and we compare it with Fx-Chl energy transfer in the FCP complex from Phaeodactylum tricornutum. In both complexes, the excited hFx (Fx) transfers energy from the S-2 state with a sub-100 fs time constant and no effect of the hexanoyloxy tail on the efficiency of the S-2 route was found. The energy transfer via the S-1/ICT state has in E-FCP two channels characterized by 1.5 and 11 ps time constants, while for FCP these two channels operate with time constants of 0.8 and 4.5 ps. Thus, minimizing the charge transfer character of S-1/ICT in hFx results in about twice slower energy transfer via the S-1/ICT state, underlining the importance of the ICT state in facilitating carotenoid-Chl energy transfer in systems utilizing keto carotenoids as energy donors.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10403 - Physical chemistry
Result continuities
Project
<a href="/en/project/GA16-10417S" target="_blank" >GA16-10417S: Carotenoids in light-harvesting and photoprotection – new approaches using multipulse femtosecond spectroscopy</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Faraday discussions
ISSN
1359-6640
e-ISSN
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Volume of the periodical
216
Issue of the periodical within the volume
JUL 1 2019
Country of publishing house
GB - UNITED KINGDOM
Number of pages
16
Pages from-to
460-475
UT code for WoS article
000477683900023
EID of the result in the Scopus database
2-s2.0-85068963808