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Article
| Open AccessRegulation of the endosomal SNX27-retromer by OTULIN
OTULIN is a linear ubiquitin hydrolase that regulates ubiquitin homeostasis. Here the authors identify the adaptor of the endosomal retromer complex sorting nexin 27 (SNX27) as a binding partner of OTULIN and determine the structure of the OTULIN-SNX27 complex, which reveals a secondary interface through which OTULIN non-catalytically antagonizes SNX27 retromer assembly and cargo loading.
- Aurelia Stangl
- , Paul R. Elliott
- & Daniel Krappmann
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Article
| Open AccessUSP32 regulates late endosomal transport and recycling through deubiquitylation of Rab7
Though ubiquitin is known to broadly influence endosomal trafficking, few ubiquitin-utilizing enzymes targeting endosomal regulators are known. Here, the authors find that the deubiquitylating enzyme (DUB) USP32 influences endosomal membrane dynamics by deubiquitinating Rab7.
- Aysegul Sapmaz
- , Ilana Berlin
- & Huib Ovaa
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Article
| Open AccessSNX3-retromer requires an evolutionary conserved MON2:DOPEY2:ATP9A complex to mediate Wntless sorting and Wnt secretion
Sustained Wnt secretion requires the endosomal SNX3-retromer complex for endosome-to-trans-Golgi network transport of the internalised Wnt chaperone Wntless. Here the authors show that in both C. elegans and human cells, SNX3-retromer requires an evolutionary conserved membrane remodelling complex for Wntless sorting and Wnt secretion.
- Ian J. McGough
- , Reinoud E. A. de Groot
- & Peter J. Cullen
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Article
| Open AccessStructural and mechanistic insights into regulation of the retromer coat by TBC1d5
Retromer is recruited to endosomes by the small GTPase Rab7 and sorting nexin 3. Here, the authors report the interaction between a GTPase-activating protein TBC1d5 and Rab7, examine the biochemical details of the interaction with retromer, and discuss the implications for receptor trafficking.
- Da Jia
- , Jin-San Zhang
- & Michael K. Rosen