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Cargo ubiquitination is essential for multivesicular body intralumenal vesicle formation
Journal article   Open access   Peer reviewed

Cargo ubiquitination is essential for multivesicular body intralumenal vesicle formation

Chris MacDonald, Nicholas J Buchkovich, Daniel K Stringer, Scott D Emr and Robert C Piper
EMBO reports, Vol.13(4), pp.331-338
04/2012
DOI: 10.1038/embor.2012.18
PMCID: PMC3321151
PMID: 22370727
url
https://europepmc.org/articles/pmc3321151View
Published (Version of record) Open Access

Abstract

The efficient formation of a variety of transport vesicles is influenced by the presence of cargo, suggesting that cargo itself might have a defining role in vesicle biogenesis. However, definitive in vivo experiments supporting this concept are lacking, as it is difficult to eliminate endogenous cargo. The Endosomal Sorting Complexes Required for Transport (ESCRT) apparatus sorts ubiquitinated membrane proteins into endosomal intralumenal vesicles (ILVs) that accumulate within multivesicular bodies. Here we show that cargo ubiquitination is required for effective recruitment of the ESCRT machinery onto endosomal membranes and for the subsequent formation of ILVs. © 2012 European Molecular Biology Organization.
endosome lysosome multivesicular body ubiquitin vacuole

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