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Piccoli, Giovanni; Onofri, Franco; Cirnaru, Maria Daniela; Kaiser, Christoph J. O.; Jagtap, Pravinkumar; Kastenmüller, Andreas; Pischedda, Francesca; Marte, Antonella; von Zweydorf, Felix; Vogt, Andreas; Giesert, Florian; Pan, Lifeng; Antonucci, Flavia; Kiel, Christina; Zhang, Mingjie; Weinkauf, Sevil; Sattler, Michael; Sala, Carlo; Matteoli, Michela; Ueffing, Marius; Gloeckner, Christian Johannes
Molecular and cellular biology, 20/6/1/, Letnik: 34, Številka: 12Journal Article
Mutations in the leucine-rich repeat kinase 2 gene (LRRK2) are associated with familial and sporadic Parkinson's disease (PD). LRRK2 is a complex protein that consists of multiple domains, including predicted C-terminal WD40 repeats. In this study, we analyzed functional and molecular features conferred by the WD40 domain. Electron microscopic analysis of the purified LRRK2 C-terminal domain revealed doughnut-shaped particles, providing experimental evidence for its WD40 fold. We demonstrate that LRRK2 WD40 binds and sequesters synaptic vesicles via interaction with vesicle-associated proteins. In fact, a domain-based pulldown approach combined with mass spectrometric analysis identified LRRK2 as being part of a highly specific protein network involved in synaptic vesicle trafficking. In addition, we found that a C-terminal sequence variant associated with an increased risk of developing PD, G2385R, correlates with a reduced binding affinity of LRRK2 WD40 to synaptic vesicles. Our data demonstrate a critical role of the WD40 domain within LRRK2 function.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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