期刊
BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS
卷 1847, 期 2, 页码 241-247出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.bbabio.2014.11.004
关键词
Diatoms; Light-harvesting; Two-dimensional spectroscopy
资金
- European Social Fund under the Global Grant measure [VP1-3.1-SMM-07-K-01-007]
- LASERLAB-EUROPE project (EC's Seventh Framework Programme) [228334]
- Swedish Research Council
- Knut and Alice Wallenberg Foundation
- Deutsche Forschungsgemeinschaft [Bu 812/4-1, Bu 812/5-1]
- EU (HARVEST Marie Curie Research Training Network) [PITN-GA-2009-238017]
- European Research Council (ERC) [ERC-2010-AdG PHOTPROT]
Fucoxanthin-chlorophyll protein (FCP) is the key molecular complex performing the light-harvesting function in diatoms, which, being a major group of algae, are responsible for up to one quarter of the total primary production on Earth. These photosynthetic organisms contain an unusually large amount of the carotenoid fucoxanthin, which absorbs the light in the blue-green spectral region and transfers the captured excitation energy to the FCP-bound chlorophylls. Due to the large number of fucoxanthins, the excitation energy transfer cascades in these complexes are particularly tangled. In this work we present the two-color two-dimensional electronic spectroscopy experiments on FCP. Analysis of the data using the modified decay associated spectra permits a detailed mapping of the excitation frequency dependent energy transfer flow with a femtosecond time resolution. (C) 2014 Elsevier B.V. All rights reserved.
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