Circular dichroism of carotenoids in bacterial light-harvesting complexes: Experiments and modeling

S. Georgakopoulou; R. van Grondelle; G. van der Zwan

doi:10.1529/biophysj.104.047498

Circular dichroism of carotenoids in bacterial light-harvesting complexes: Experiments and modeling

S. Georgakopoulou, R. van Grondelle, G. van der Zwan

Biophysics Photosynthesis/Energy

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Abstract

In this work we investigate the origin and characteristics of the circular dichroism (CD) spectrum of rhodopin glucoside and lycopene in the light-harvesting 2 complex of Rhodopseudomonas acidophila and Rhodospirillum molischianum, respectively. We successfully model their absorption and CD spectra based on the high-resolution structures. We assume that these spectra originate from seven interacting transition dipole moments: the first corresponds to the 0-0 transition of the carotenoid, whereas the remaining six represent higher vibronic components of the S

Original language	English
Pages (from-to)	3010-3022
Journal	Biophysical Journal
Volume	87
Issue number	5
DOIs	https://doi.org/10.1529/biophysj.104.047498
Publication status	Published - 2004

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Circular dichroism of carotenoids in bacterial light-harvesting complexes: Experiments and modeling

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10.1529/biophysj.104.047498

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AB - In this work we investigate the origin and characteristics of the circular dichroism (CD) spectrum of rhodopin glucoside and lycopene in the light-harvesting 2 complex of Rhodopseudomonas acidophila and Rhodospirillum molischianum, respectively. We successfully model their absorption and CD spectra based on the high-resolution structures. We assume that these spectra originate from seven interacting transition dipole moments: the first corresponds to the 0-0 transition of the carotenoid, whereas the remaining six represent higher vibronic components of the S

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JO - Biophysical Journal

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Circular dichroism of carotenoids in bacterial light-harvesting complexes: Experiments and modeling

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