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  • The Parkinson's Disease Protein LRRK2 Interacts with the GARP Complex to Promote Retrograde Transport to the trans-Golgi Network.

The Parkinson's Disease Protein LRRK2 Interacts with the GARP Complex to Promote Retrograde Transport to the trans-Golgi Network.

Cell reports (2020-05-07)
Alexandra Beilina, Luis Bonet-Ponce, Ravindran Kumaran, Jennifer J Kordich, Morié Ishida, Adamantios Mamais, Alice Kaganovich, Sara Saez-Atienzar, David C Gershlick, Dorien A Roosen, Laura Pellegrini, Vlad Malkov, Matthew J Fell, Kirsten Harvey, Juan S Bonifacino, Darren J Moore, Mark R Cookson
ABSTRACT

Mutations in Leucine-rich repeat kinase 2 (LRRK2) cause Parkinson's disease (PD). However, the precise function of LRRK2 remains unclear. We report an interaction between LRRK2 and VPS52, a subunit of the Golgi-associated retrograde protein (GARP) complex that identifies a function of LRRK2 in regulating membrane fusion at the trans-Golgi network (TGN). At the TGN, LRRK2 further interacts with the Golgi SNAREs VAMP4 and Syntaxin-6 and acts as a scaffolding platform that stabilizes the GARP-SNAREs complex formation. Therefore, LRRK2 influences both retrograde and post-Golgi trafficking pathways in a manner dependent on its GTP binding and kinase activity. This action is exaggerated by mutations associated with Parkinson's disease and can be blocked by kinase inhibitors. Disruption of GARP sensitizes dopamine neurons to mutant LRRK2 toxicity in C. elegans, showing that these pathways are interlinked in vivo and suggesting a link in PD.

MATERIALS
Product Number
Brand
Product Description

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Anti-VPS51 antibody produced in rabbit, Prestige Antibodies® Powered by Atlas Antibodies, affinity isolated antibody, buffered aqueous glycerol solution
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Anti-Cathepsin D Rabbit pAb, liquid, Calbiochem®
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