PMID- 28057764 OWN - NLM STAT- MEDLINE DCOM- 20170919 LR - 20190402 IS - 1939-4586 (Electronic) IS - 1059-1524 (Print) IS - 1059-1524 (Linking) VI - 28 IP - 5 DP - 2017 Mar 1 TI - Regulation of yeast ESCRT-III membrane scission activity by the Doa4 ubiquitin hydrolase. PG - 661-672 LID - 10.1091/mbc.E16-11-0761 [doi] AB - ESCRT-III executes membrane scission during the budding of intralumenal vesicles (ILVs) at endosomes. The scission mechanism is unknown but appears to be linked to the cycle of assembly and disassembly of ESCRT-III complexes at membranes. Regulating this cycle is therefore expected to be important for determining the timing of ESCRT-III-mediated membrane scission. We show that in Saccharomyces cerevisiae, ESCRT-III complexes are stabilized and ILV membrane scission is delayed by Doa4, which is the ubiquitin hydrolase that deubiquitinates transmembrane proteins sorted as cargoes into ILVs. These results suggest a mechanism to delay ILV budding while cargoes undergo deubiquitination. We further show that deubiquitination of ILV cargoes is inhibited via Doa4 binding to Vps20, which is the subunit of ESCRT-III that initiates assembly of the complex. Current models suggest that ESCRT-III complexes surround ubiquitinated cargoes to trap them at the site of ILV budding while the cargoes undergo deubiquitination. Thus our results also propose a mechanism to prevent the onset of ILV cargo deubiquitination at the initiation of ESCRT-III complex assembly. CI - (c) 2017 Johnson et al. This article is distributed by The American Society for Cell Biology under license from the author(s). Two months after publication it is available to the public under an Attribution-Noncommercial-Share Alike 3.0 Unported Creative Commons License (http://creativecommons.org/licenses/by-nc-sa/3.0). FAU - Johnson, Natalie AU - Johnson N AD - Molecular, Cellular, and Developmental Biology, University of Colorado, Boulder, CO 80309. FAU - West, Matt AU - West M AD - Molecular, Cellular, and Developmental Biology, University of Colorado, Boulder, CO 80309. FAU - Odorizzi, Greg AU - Odorizzi G AD - Molecular, Cellular, and Developmental Biology, University of Colorado, Boulder, CO 80309 odorizzi@colorado.edu. LA - eng GR - R01 GM111335/GM/NIGMS NIH HHS/United States PT - Journal Article DEP - 20170105 PL - United States TA - Mol Biol Cell JT - Molecular biology of the cell JID - 9201390 RN - 0 (DOA4 protein, S cerevisiae) RN - 0 (Endosomal Sorting Complexes Required for Transport) RN - 0 (Saccharomyces cerevisiae Proteins) RN - 0 (Ubiquitin) RN - EC 3.4.- (Endopeptidases) RN - EC 3.4.19.12 (Ubiquitin Thiolesterase) SB - IM MH - Cell Division/physiology MH - Endopeptidases/*metabolism MH - Endosomal Sorting Complexes Required for Transport/*metabolism MH - Endosomes/metabolism MH - Intracellular Membranes/metabolism MH - Multivesicular Bodies/metabolism MH - Protein Binding MH - Protein Transport MH - Saccharomyces cerevisiae/cytology/metabolism MH - Saccharomyces cerevisiae Proteins/*metabolism MH - Ubiquitin/metabolism MH - Ubiquitin Thiolesterase/*metabolism PMC - PMC5328624 EDAT- 2017/01/07 06:00 MHDA- 2017/09/20 06:00 PMCR- 2017/05/16 CRDT- 2017/01/07 06:00 PHST- 2016/11/04 00:00 [received] PHST- 2016/12/15 00:00 [revised] PHST- 2016/12/30 00:00 [accepted] PHST- 2017/01/07 06:00 [pubmed] PHST- 2017/09/20 06:00 [medline] PHST- 2017/01/07 06:00 [entrez] PHST- 2017/05/16 00:00 [pmc-release] AID - mbc.E16-11-0761 [pii] AID - E16-11-0761 [pii] AID - 10.1091/mbc.E16-11-0761 [doi] PST - ppublish SO - Mol Biol Cell. 2017 Mar 1;28(5):661-672. doi: 10.1091/mbc.E16-11-0761. Epub 2017 Jan 5.