LRRK2-phosphorylated Rab10 sequesters Myosin Va with RILPL2 during ciliogenesis blockade
LRRK2-phosphorylated Rab10 sequesters Myosin Va with RILPL2 during ciliogenesis blockade
Activating mutations in LRRK2 kinase causes Parkinson’s disease. Pathogenic LRRK2 phosphorylates a subset of Rab GTPases and blocks ciliogenesis. Thus, defining novel phospho-Rab interacting partners is critical to our understanding of the molecular basis of LRRK2 pathogenesis. RILPL2 binds with strong preference to LRRK2-phosphorylated Rab8A and Rab10. RILPL2 is a binding partner of the motor protein and Rab effector, Myosin Va. We show here that the globular tail domain of Myosin Va also contains a high affinity binding site for LRRK2-phosphorylated Rab10. In the presence of pathogenic LRRK2, RILPL2 and MyoVa relocalize to the peri-centriolar region in a phosphoRab10-dependent manner. PhosphoRab10 retains Myosin Va over pericentriolar membranes as determined by fluorescence loss in photobleaching microscopy. Without pathogenic LRRK2, RILPL2 is not essential for ciliogenesis but RILPL2 over-expression blocks ciliogenesis in RPE cells independent of tau tubulin kinase recruitment to the mother centriole. These experiments show that LRRK2 generated-phosphoRab10 dramatically redistributes a significant fraction of Myosin Va and RILPL2 to the mother centriole in a manner that likely interferes with Myosin Va’s role in ciliogenesis.
- Stanford University United States
- University of Dundee United Kingdom
- University of Dundee
- Department of Biochemistry Stanford University School of Medicine United States
- Stanford University School of Medicine United States
/dk/atira/pure/subjectarea/asjc/2300/2307, Myosin Type V, /dk/atira/pure/subjectarea/asjc/1100/1110, 610, Genetics and Molecular Biology (miscellaneous), Leucine-Rich Repeat Serine-Threonine Protein Kinase-2, Cell Line, name=Ecology, Humans, Toxicology and Mutagenesis, Cilia, name=Health, Phosphorylation, /dk/atira/pure/subjectarea/asjc/2300/2303, Research Articles, Adaptor Proteins, Signal Transducing, Binding Sites, /dk/atira/pure/subjectarea/asjc/1300/1301, Myosin Heavy Chains, name=Biochemistry, LRRK2, HEK293 Cells, A549 Cells, rab GTP-Binding Proteins, Primary Cilia, Parkinson’s disease, name=Plant Science, Rab GTPase, Protein Binding
/dk/atira/pure/subjectarea/asjc/2300/2307, Myosin Type V, /dk/atira/pure/subjectarea/asjc/1100/1110, 610, Genetics and Molecular Biology (miscellaneous), Leucine-Rich Repeat Serine-Threonine Protein Kinase-2, Cell Line, name=Ecology, Humans, Toxicology and Mutagenesis, Cilia, name=Health, Phosphorylation, /dk/atira/pure/subjectarea/asjc/2300/2303, Research Articles, Adaptor Proteins, Signal Transducing, Binding Sites, /dk/atira/pure/subjectarea/asjc/1300/1301, Myosin Heavy Chains, name=Biochemistry, LRRK2, HEK293 Cells, A549 Cells, rab GTP-Binding Proteins, Primary Cilia, Parkinson’s disease, name=Plant Science, Rab GTPase, Protein Binding
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