Reference: Li W and Zhang L (2019) Regulation of ATG and Autophagy Initiation. Adv Exp Med Biol 1206:41-65

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Abstract


ATG is involved in multiple processes of autophagosome formation, including the initial phase of autophagy. The mammalian autophagy complex-ULK1 complex is composed of ULK1, FIP200, ATG13 and ATG101, and the yeast autophagy initiation complex-ATG1 complex is composed of ATG1, ATG13, ATG17, ATG29 and ATG31. After this complex is activated, it binds and phosphorylates ATG9 on the vesicles. Then PI3KC3-C1 (yeast: ATG34: ATG15: ATG6: ATG14 or mammal animal: ATG34: ATG15: BECN1: ATG14L) is recruited to the PAS. Further, ATG12-ATG5-ATG16 complex is localized on PAS (Yeast) or localized on the outer surface of the membrane (mammal) and makes binding of ATG8 (LC3) with PE to form ATG8-PE complex, promoting autophagic membrane elongation, closure and formation autophagosome and autophagosome lysosome.

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Li W, Zhang L
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