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ATG Family

The Autophagin protein family is involved in autophagy, the biological process in which endogenous protein and damaged organelles are degraded. ATG3 (autophagy-related protein 3; also known as APG3-like and PC3-96) is a ubiquitous 45 kDa member of the ATG3 family of proteins. It functions as an E2-like enzyme during the initial stages of autophagosome formation by catalyzing the transfer of ATG7-bound ATG8 (also known as LC3, GATE16 and GABA-RAP in mammals) to phosphatidylethanolamine, critical for autophagy.