Glycerolipids in photosynthesis: Composition,synthesis and trafficking |
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Authors: | Laurence Boudière Morgane MichaudDimitris Petroutsos Fabrice RébeilléDenis Falconet Olivier BastienSylvaine Roy Giovanni FinazziNorbert Rolland Juliette JouhetMaryse A Block Eric Maréchal |
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Institution: | Laboratoire de Physiologie Cellulaire, Végétale, CNRS UMR 5168, CEA iRTSV, Univ. Grenoble Alpes, INRA USC 1359, CEA Grenoble, 17 rue des Martyrs, 38054, Grenoble Cedex 9, France |
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Abstract: | Glycerolipids constituting the matrix of photosynthetic membranes, from cyanobacteria to chloroplasts of eukaryotic cells, comprise monogalactosyldiacylglycerol, digalactosyldiacylglycerol, sulfoquinovosyldiacylglycerol and phosphatidylglycerol. This review covers our current knowledge on the structural and functional features of these lipids in various cellular models, from prokaryotes to eukaryotes. Their relative proportions in thylakoid membranes result from highly regulated and compartmentalized metabolic pathways, with a cooperation, in the case of eukaryotes, of non-plastidic compartments. This review also focuses on the role of each of these thylakoid glycerolipids in stabilizing protein complexes of the photosynthetic machinery, which might be one of the reasons for their fascinating conservation in the course of evolution. This article is part of a Special Issue entitled: Dynamic and ultrastructure of bioenergetic membranes and their components. |
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Keywords: | ATS1 sn-glycerol-3-phosphate acyltransferase ATS2 1-acylglycerol-phosphate acyltransferase DAG diacylglycerol DGD1 and DGD2 digalactosyldiacylglycerol synthase 1 and 2 DGDG digalactosyldiacylglycerol IEM inner envelope membrane of the chloroplast LHCII light harvesting complex II MGlcDG monoglucosyldiacylglycerol MGD1 MGD2 and MGD3 monogalactosyldiacylglycerol synthase 1 2 and 3 MGDG monogalactosyldiacylglycerol OEC oxygen evolving complex OEM outer envelope membrane of the chloroplast PA phosphatidic acid PC phosphatidylcholine PE phosphatidylethanolamine PG phosphatidylglycerol Psb lumenal extrinsic proteins of the oxygen evolving complex interacting with photosystem II (includes PsbO PsbU PsbV PsbQ and PsbP) PSI photosystem I PSII photosystem II QA primary quinone acceptor QB diffusing quinone SQDG sulfoquinovosyldiacylglycerol WT wild type |
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