Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.14279/18527
Title: Fine tuning of the photosystem II major antenna mobility within the thylakoid membrane of higher plants
Authors: Daskalakis, Vangelis 
Papadatos, Sotiris 
Kleinekathöfer, Ulrich 
Major Field of Science: Natural Sciences
Field Category: Biological Sciences
Keywords: Light harvesting complex;Photoprotection;Protein diffusion;PsbS;Saffman–Delbrück model;Thylakoid lipids
Issue Date: 1-Dec-2019
Source: Biochimica et Biophysica Acta - Biomembranes, 2019, vol. 1861, no. 12, articl. no. 183059
Volume: 1861
Issue: 12
Journal: Biochimica et Biophysica Acta - Biomembranes 
Abstract: Depending on the amount of light, the photosystem II (PSII) antennae or Light Harvesting Complexes (LHCII) switch between two states within the thylakoid membranes of higher plants, i.e., a light-harvesting and a photoprotective mode. This switch is co-regulated by a pH gradient (ΔpH) across the membrane and the interaction with the PSII subunit S (PsbS) that is proposed to induce LHCII aggregation. Herein we employ all-atom and coarse-grained molecular simulations of the major LHCII trimer at low and excess ΔpH, as well as in complexation with PsbS within a native thylakoid membrane model. Our results demonstrate the aggregation potential of LHCII and, consistent with the experimental literature, reveal the role of PsbS at atomic resolution. PsbS alters the LHCII-thylakoid lipid interactions and restores the LHCII mobility that is lost in the transition to photoprotective conditions (low lumenal pH). In agreement with this finding, diffusion of the integral membrane protein LHCII is dependent on both, electrostatic interactions and hydrophobic mismatch, while it does not obey the Saffman–Delbrück diffusion model.
URI: https://hdl.handle.net/20.500.14279/18527
ISSN: 00052736
DOI: 10.1016/j.bbamem.2019.183059
Rights: © Elsevier 2019
Attribution-NonCommercial-NoDerivs 3.0 United States
Type: Article
Affiliation : Cyprus University of Technology 
Jacobs University Bremen 
Publication Type: Peer Reviewed
Appears in Collections:Άρθρα/Articles

CORE Recommender
Show full item record

SCOPUSTM   
Citations

28
checked on Mar 11, 2024

WEB OF SCIENCETM
Citations

24
Last Week
0
Last month
0
checked on Oct 29, 2023

Page view(s)

287
Last Week
0
Last month
4
checked on Dec 23, 2024

Google ScholarTM

Check

Altmetric


This item is licensed under a Creative Commons License Creative Commons