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Rabaptin5 targets autophagy to damaged endosomes and SCVs by interaction with FIP200 and ATG16L1

Authors: Valentina Millarte; Simon Schlienger; Simone Kälin; Martin Spiess;

Rabaptin5 targets autophagy to damaged endosomes and SCVs by interaction with FIP200 and ATG16L1

Abstract

SummarySelective autophagy of damaged organelles is an important process for cellular homeostasis. The mechanisms how autophagy selects specific targets is often poorly understood. Rabaptin5 was previously known as a major regulator of early endosome identity and maturation. Here we identified two novel Rabaptin5 interactors: FIP200, a subunit of the ULK1 autophagy initiator complex, and ATG16L1, a central component of the E3-like enzyme in LC3 lipidation. Indeed, autophagy of early endosomes damaged by chloroquine or monensin treatment was found to require Rabaptin5 and particularly a specific short sequence motif binding to the WD domain of ATG16L1. Rabaptin5 and this interaction with ATG16L1 is further required for much of autophagic elimination ofSalmonella entericain phagosomes with early endosomal characteristics early after infection. Our results demonstrate a novel function of Rabaptin5 in quality control of early endosomes in the selective recruitment of autophagy to damaged early endosomes and phagosomes.

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average