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Spectroscopy on Individual Light-Harvesting 1 Complexes of Rhodopseudomonas acidophila

Title data

Ketelaars, Martijn ; Hofmann, Clemens ; Köhler, Jürgen ; Howard, Tina D. ; Cogdell, Richard J. ; Schmidt, Jan ; Aartsma, Thijs J.:
Spectroscopy on Individual Light-Harvesting 1 Complexes of Rhodopseudomonas acidophila.
In: Biophysical Journal. Vol. 83 (2002) Issue 3 . - pp. 1701-1715.
ISSN 1542-0086
DOI: https://doi.org/10.1016/S0006-3495(02)73938-6

Abstract in another language

In this paper the fluorescence-excitation spectra of individual LH1-RC complexes (Rhodopseudomonas acidophila) at 1.2 K are presented. All spectra show a limited number of broad bands with a characteristic polarization behavior, indicating that the excitations are delocalized over a large number of pigments. A significant variation in the number of bands, their bandwidths, and polarization behavior is observed. Only 30% of the spectra carry a clear signature of delocalized excited states of a circular structure of the pigments. The large spectral variety suggests that besides site heterogeneity also structural heterogeneity determines the optical spectrum of the individual LH1-RC complexes. Further research should reveal if such heterogeneity is a native property of the complex or induced during the experimental procedures.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: Single Molecules
Institutions of the University: Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Lehrstuhl Experimentalphysik IX - Spektroskopie weicher Materie > Lehrstuhl Experimentalphysik IX - Spektroskopie weicher Materie - Univ.-Prof. Dr. Jürgen Köhler
Faculties
Faculties > Faculty of Mathematics, Physics und Computer Science
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Lehrstuhl Experimentalphysik IX - Spektroskopie weicher Materie
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 530 Physics
Date Deposited: 10 Apr 2018 12:22
Last Modified: 10 Apr 2018 12:22
URI: https://eref.uni-bayreuth.de/id/eprint/43326