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- W2595189039 abstract "Summary Class III PI3-kinase (PI3KC3) is essential for autophagy initiation, but whether PI3KC3 participates in other steps of autophagy remains unknown. The HOPS complex mediates the fusion of intracellular vesicles to lysosome, but how HOPS specifically tethers autophagosome to lysosome remains elusive. Here, we report Pacer (protein associated with UVRAG as autophagy enhancer) as a regulator of autophagy. Pacer localizes to autophagic structures and positively regulates autophagosome maturation. Mechanistically, Pacer antagonizes Rubicon to stimulate Vps34 kinase activity. Next, Pacer recruits PI3KC3 and HOPS complexes to the autophagosome for their site-specific activation by anchoring to the autophagosomal SNARE Stx17. Furthermore, Pacer is crucial for the degradation of hepatic lipid droplets, the suppression of Salmonella infection, and the clearance of protein aggregates. These results not only identify Pacer as a crucial multifunctional enhancer in autophagy but also uncover both the involvement of PI3KC3 and the mediators of HOPS's specific tethering activity in autophagosome maturation." @default.
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- W2595189039 date "2017-03-01" @default.
- W2595189039 modified "2023-10-18" @default.
- W2595189039 title "Pacer Mediates the Function of Class III PI3K and HOPS Complexes in Autophagosome Maturation by Engaging Stx17" @default.
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- W2595189039 doi "https://doi.org/10.1016/j.molcel.2017.02.010" @default.
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