Accurate MS-based Rab10 Phosphorylation Stoichiometry Determination as Readout for LRRK2 Activity in Parkinson's Disease

Pathogenic mutations in the Leucine-rich repeat kinase 2 (LRRK2) increase its activity leading to increased phosphorylation of Rab proteins. Here we introduce a sensitive and accurate assay to measure increased phospho Rab levels using synthetic stable isotope-labeled analogues for both phosphorylat...

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