Rab32 interacts with SNX6 and affects retromer-dependent Golgi trafficking

Loading...
Thumbnail Image
Files
journal.pone.0208889 (1).pdf(2.89 MB)
Published Version
7585493.zip(89.24 MB)
Supplementary files
Date
2019
Authors
Waschbüsch, Dieter
Hübel, Nicole
Ossendorf, Edith
Lobbestael, Evy
Baekelandt, Veerle
Lindsay, Andrew J.
McCaffrey, Mary W.
Khan, Amir R.
Barnekow, Angelika
Journal Title
Journal ISSN
Volume Title
Publisher
Public Library of Science
Research Projects
Organizational Units
Journal Issue
Abstract
The Rab family of small GTPases regulate various aspects of cellular dynamics in eukaryotic cells. Membrane trafficking has emerged as central to the functions of leucine-rich repeat kinase 2 (LRRK2), which is associated with inherited and sporadic forms of Parkinson’s disease (PD). Rabs act as both regulators of the catalytic activity and targets for serine/threonine phosphorylation by LRRK2. Rab32, Rab38 and Rab29 have been shown to regulate LRRK2 sub-cellular localization through direct interactions. Recently, Rab29 was shown to escort LRRK2 to the Golgi apparatus and activate the phosphorylation of Rab8 and Rab10. Rab32 is linked to multiple cellular functions including endosomal trafficking, mitochondrial dynamics, and melanosome biogenesis. A missense mutation in Rab32 has also recently been linked to PD. Here, we demonstrate that Rab32 directly interacts with sorting nexin 6 (SNX6). SNX6 is a transient subunit of the retromer, an endosome-Golgi retrieval complex whose Vps35 subunit is strongly associated with PD. We could further show that localization of cation-independent mannose-6-phosphate receptors, which are recycled to the trans-Golgi network (TGN) by the retromer, was affected by both Rab32 and SNX6. These data imply that Rab32 is linked to SNX6/retromer trafficking at the Golgi, and also suggests a possible connection between the retromer and Rab32 in the trafficking and biological functions of LRRK2.
Description
Keywords
Rab , Cellular dynamics , Membrane trafficking
Citation
Waschbüsch, D., Hübel, N., Ossendorf, E., Lobbestael, E., Baekelandt, V., Lindsay, A.J., McCaffrey, M.W., Khan, A.R. and Barnekow, A., 2019. Rab32 interacts with SNX6 and affects retromer-dependent Golgi trafficking. PloS one, 14(1). (e0208889). DOI: 10.1371/journal.pone.0208889