Glycerolipids are synthesized in which of the following cell organelles ?
Plastids and ER
In plant cells glycerolipids are assembled by two pathways: the prokaryotic pathway in plastids (chloroplast envelope), which makes galactolipids MGDG/DGDG and phosphatidylglycerol, and the eukaryotic pathway in the endoplasmic reticulum, which makes phosphatidylcholine and other phospholipids.
Fatty acids are made in plastids and exported, acylated onto glycerol-3-phosphate in the ER, and diacylglycerol moieties are exchanged between ER and plastids.
Golgi bodies process and sort lipids, spherosomes (oleosomes) store triacylglycerol, lysosomes degrade, mitochondria make only a few lipids, and the cytoskeleton has no synthetic role.
So glycerolipids are synthesised in plastids and the ER.
Hence, Plastids and ER.
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