Issue |
EPJ Web of Conferences
Volume 83, 2015
QENS/WINS 2014 - 11th International Conference on Quasielastic Neutron Scattering and 6th International Workshop on Inelastic Neutron Spectrometers
|
|
---|---|---|
Article Number | 02004 | |
Number of page(s) | 4 | |
Section | QENS 2014 | |
DOI | https://doi.org/10.1051/epjconf/20158302004 | |
Published online | 23 January 2015 |
https://doi.org/10.1051/epjconf/20158302004
Vibrational dynamics of plant light-harvesting complex LHC II investigated by quasi- and inelastic neutron scattering
1 Tartu University, Institute of Physics, Tartu, Estonia
2 Department of Life Science & Technology, Laboratory of Biochemistry, University for Applied Sciences, Berlin, Germany
3 Institute of Physical Energetics, Riga, Latvia
a Corresponding author: pieper@ut.ee
Published online: 23 January 2015
Vibrational dynamics of the light-harvesting complex II (LHC II) from spinach was investigated by quasi- and inelastic neutron scattering (QENS and INS) at three different temperatures of 80, 160, and 285 K. QENS/INS spectra of solubilised LHC II and of the corresponding buffer solution were obtained separately and exhibit characteristic inelastic features. After subtraction of the buffer contribution, the INS spectrum of LHC II reveals a distinct Boson peak at ∼ 2.5 meV at 80 K that shifts towards lower energies if the temperature is increased to 285 K. This effect is interpreted in terms of a “softening” of the protein matrix along with the dynamical transition at ∼ 240 K. Our findings indicate that INS is a valuable method to obtain the density of vibrational states not only at cryogenic, but also at physiological temperatures.
© Owned by the authors, published by EDP Sciences, 2015
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.