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Multi-Level, Multi Time-Scale Fluorescence Intermittency of Photosynthetic LH2 Complexes : A Precursor of Non-Photochemical Quenching?

Title data

Schörner, Mario ; Beyer, Sebastian R. ; Southall, June ; Cogdell, Richard J. ; Köhler, Jürgen:
Multi-Level, Multi Time-Scale Fluorescence Intermittency of Photosynthetic LH2 Complexes : A Precursor of Non-Photochemical Quenching?
In: The Journal of Physical Chemistry B. Vol. 119 (2015) Issue 44 . - pp. 13958-13963.
ISSN 1520-5207
DOI: https://doi.org/10.1021/acs.jpcb.5b06979

Abstract in another language

The light harvesting complex LH2 is a chromoprotein that is an ideal system for studying protein dynamics via the spectral fluctuations of the emission of its intrinsic chromophores. We have immobilized these complexes in a polymer film and studied the fluctuations of the fluorescence intensity from individual complexes over 9 orders of magnitude in time. Combining time-tagged detection of single photons with a change-point analysis has allowed the unambigeous identification of the various intensity levels due to the huge statistical basis of the data set. We propose that the observed intensity level fluctuations reflect conformational changes of the protein backbone that might be a precursor of the mechanism from which nonphotochemical quenching of higher plants has evolved.

Further data

Item Type: Article in a journal
Refereed: Yes
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 11:49
Last Modified: 10 Apr 2018 11:49
URI: https://eref.uni-bayreuth.de/id/eprint/43400