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  Anisotropic Circular Dichroism of Light-Harvesting Complex II in Oriented Lipid Bilayers: Theory Meets Experiment

Akhtar, P., Lindorfer, D., Lingvay, M., Pawlak, K., Zsiros, O., Siligardi, G., et al. (2019). Anisotropic Circular Dichroism of Light-Harvesting Complex II in Oriented Lipid Bilayers: Theory Meets Experiment. The Journal of Physical Chemistry B, 123(5), 1090-1098. doi:10.1021/acs.jpcb.8b12474.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0005-A919-1 Version Permalink: http://hdl.handle.net/21.11116/0000-0005-A91A-0
Genre: Journal Article

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 Creators:
Akhtar, Parveen, Author
Lindorfer, Dominik, Author
Lingvay, Monika, Author
Pawlak, Krzysztof1, Author              
Zsiros, Otto, Author
Siligardi, Giuliano, Author
Javorfi, Tamas, Author
Dorogi, Marta, Author
Ughy, Bettina, Author
Garab, Gyozo, Author
Renger, Thomas, Author
Lambrev, Petar H., Author
Affiliations:
1Research Department DeBeer, Max Planck Institute for Chemical Energy Conversion, Max Planck Society, ou_3023871              

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 Abstract: Anisotropic circular dichroism (ACD) spectroscopy of macroscopically aligned molecules reveals additional information about their excited states that is lost in the CD of randomly oriented solutions. ACD spectra of light-harvesting complex II (LHCII)-the main peripheral antenna of photosystem II in plants-in oriented lipid bilayers were recorded from the far-UV to the visible wavelength region. ACD spectra show a drastically enhanced magnitude and level of detail compared to the isotropic CD spectra, resolving a greater number of bands and weak optical transitions. Exciton calculations show that the spectral features in the chlorophyll Q y region are well-reproduced by an existing Hamiltonian for LHCII, providing further evidence for the identity of energy sinks at chlorophylls a603 and a610 in the stromal layer and chlorophylls a604 and a613 in the lumina] layer. We propose ACD spectroscopy to be a valuable tool linking the three-dimensional structure and the photophysical properties of pigment-protein complexes.

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Language(s): eng - English
 Dates: 2019
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: ISI: 000458348400014
DOI: 10.1021/acs.jpcb.8b12474
 Degree: -

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Title: The Journal of Physical Chemistry B
  Other : J. Phys. Chem. B
Source Genre: Journal
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Publ. Info: Washington, D.C. : American Chemical Society
Pages: - Volume / Issue: 123 (5) Sequence Number: - Start / End Page: 1090 - 1098 Identifier: ISSN: 1520-6106
CoNE: https://pure.mpg.de/cone/journals/resource/1000000000293370_1