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Isolation of Plant Photosystem II Complexes by Fractional Solubilization

Haniewicz, Patrycja and Floris, Davide and Farci, Domenica and Kirkpatrick, Joanna and Loi, Maria C and Buechel, Claudia and Bochtler, Matthias and Piano, Dario (2015) Isolation of Plant Photosystem II Complexes by Fractional Solubilization. Frontiers in Plant Science, 6 (1100). pp. 1-9. ISSN 1664-462X


Official URL: http://journal.frontiersin.org/article/10.3389/fpl...


Photosystem II (PSII) occurs in different forms and supercomplexes in thylakoid membranes. Using a transplastomic strain of Nicotiana tabacum histidine tagged on the subunit PsbE, we have previously shown that a mild extraction protocol with β-dodecylmaltoside enriches PSII characteristic of lamellae and grana margins. Here, we characterize residual granal PSII that is not extracted by this first solubilization step. Using affinity purification, we demonstrate that this PSII fraction consists of PSII-LHCII mega- and supercomplexes, PSII dimers, and PSII monomers, which were separated by gel filtration and functionally characterized. Our findings represent an alternative demonstration of different PSII populations in thylakoid membranes, and they make it possible to prepare PSII-LHCII supercomplexes in high yield.

Item Type:Article
Subjects:Q Science > Q Science (General)
Divisions:Department of Bioinformatics
ID Code:1098
Deposited By: Prof. Matthias Bochtler
Deposited On:22 Dec 2015 12:56
Last Modified:11 Jan 2016 09:23

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