Atg3-catalyzed transferring of Atg8 to phosphatidylethanolamine (PE) in the phagophore membrane is essential for autophagy. Previous studies have demonstrated that this process requires Atg3 to interact with the phagophore membrane via its N-terminal amphipathic helix. In this study, by using combined biochemical and biophysical approaches, our data showed that in addition to binding to the membranes, Atg3 attenuates lipid diffusion and enriches lipid molecules with smaller headgroup. Our data suggest that Atg3 promotes Atg8 lipidation via altering lipid diffusion and rearrangement. © 2020 The Protein Society.
Shen Wang, Yun Li, Cong Ma. Atg3 promotes Atg8 lipidation via altering lipid diffusion and rearrangement. Protein science : a publication of the Protein Society. 2020 Jun;29(6):1511-1523
PMID: 32277540
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