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. 2021 Nov 2;65(5):813–845. doi: 10.1042/EBC20200067

Figure 15. Lipid droplet formation in the ER membrane.

Figure 15

Lipid droplet biogenesis begins with the synthesis of TAG that accumulates between the two leaflets of the ER membrane. An oil lens is formed, which buds towards the cytosol. Finally, the mature lipid droplet, surrounded by a lipid monolayer, is released into the cytosol. The TAG biosynthetic machinery is recruited by a protein called seipin (not shown).