14-3-3 Proteins regulate mutant LRRK2 kinase activity and neurite shortening

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14-3-3 Proteins regulate mutant LRRK2 kinase activity and neurite shortening.

Mutations in leucine-rich repeat kinase 2 (LRRK2) are the most common known cause of inherited Parkinson's disease (PD), and LRRK2 is a risk factor for idiopathic PD. How LRRK2 function is regulated is not well understood. Recently, the highly conserved 14-3-3 proteins, which play a key role in many cellular functions including cell death, have been shown to interact with LRRK2. In this study, ...

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14-3-3 proteins are promising LRRK2 interactors.

Mutations in LRRK2 (leucine-rich repeat kinase 2) are the most common cause of familial PD (Parkinson's disease). Mutations that cause PD are found in either the GTPase or kinase domains of LRRK2 or an intervening sequence called the COR [C-terminus of ROC (Ras of complex proteins)] domain. As well as the two catalytic domains, LRRK2 possesses several protein-protein interaction domains, but th...

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14-3-3 proteins regulate protein kinase a activity to modulate growth cone turning responses.

Growth cones regulate the speed and direction of neuronal outgrowth during development and regeneration. How the growth cone spatially and temporally regulates signals from guidance cues is poorly understood. Through a proteomic analysis of purified growth cones we identified isoforms of the 14-3-3 family of adaptor proteins as major constituents of the growth cone. Disruption of 14-3-3 via the...

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The 14-3-3 proteins positively regulate rapamycin-sensitive signaling

BACKGROUND The kinase Tor is the target of the immunosuppressive drug rapamycin and is a member of the phosphatidylinositol kinase (PIK)-related kinase family. It plays an essential role in progression through the G1 phase of the cell cycle. The molecular details of Tor signaling remain obscure, however. RESULTS We isolated two Saccharomyces cerevisiae genes, BMH1 and BMH2, as multicopy suppr...

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14-3-3 proteins are required for maintenance of Raf-1 phosphorylation and kinase activity.

By binding to serine-phosphorylated proteins, 14-3-3 proteins function as effectors of serine phosphorylation. The exact mechanism of their action is, however, still largely unknown. Here we demonstrate a requirement for 14-3-3 for Raf-1 kinase activity and phosphorylation. Expression of dominant negative forms of 14-3-3 resulted in the loss of a critical Raf-1 phosphorylation, while overexpres...

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ژورنال

عنوان ژورنال: Human Molecular Genetics

سال: 2015

ISSN: 0964-6906,1460-2083

DOI: 10.1093/hmg/ddv453