Fig. 8.
From: Membrane dynamics and organelle biogenesis—lipid pipelines and vesicular carriers
Overview of the lipid origin for the formation of the phagophore membrane. a The lipids of the forming phagophore membrane originate from multiple sources such as the ER, mitochondria, Golgi, plasma membrane and other compartments but also from b de novo synthesis of PI(3)P by the Vps34 PI3K kinase complex I