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  • Title: Lipid trafficking at endoplasmic reticulum-chloroplast membrane contact sites.
    Author: Block MA, Jouhet J.
    Journal: Curr Opin Cell Biol; 2015 Aug; 35():21-9. PubMed ID: 25868077.
    Abstract:
    Glycerolipid synthesis in plant cells is characterized by an intense trafficking of lipids between the endoplasmic reticulum (ER) and chloroplasts. Initially, fatty acids are synthesized within chloroplasts and are exported to the ER where they are used to build up phospholipids and triacylglycerol. Ultimately, derivatives of these phospholipids return to chloroplasts to form galactolipids, monogalactosyldiacylglycerol and digalactosyldiacylglycerol, the main and essential lipids of photosynthetic membranes. Lipid trafficking was proposed to transit through membrane contact sites (MCSs) connecting both organelles. Here, we review recent insights into ER-chloroplast MCSs and lipid trafficking between chloroplasts and the ER.
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