Journal of Molecular Neuroscience

, 39:323

Clearance and Phosphorylation of Alpha-Synuclein Are Inhibited in Methionine Sulfoxide Reductase A Null Yeast Cells

  • Derek B. Oien
  • Heather E. Shinogle
  • David S. Moore
  • Jackob Moskovitz
Article

DOI: 10.1007/s12031-009-9274-8

Cite this article as:
Oien, D.B., Shinogle, H.E., Moore, D.S. et al. J Mol Neurosci (2009) 39: 323. doi:10.1007/s12031-009-9274-8

Abstract

Aggregated α-synuclein and the point mutations Ala30Pro and Ala53Thr of α-synuclein are associated with Parkinson’s disease. The physiological roles of α-synuclein and methionine oxidation of the α-synuclein protein structure and function are not fully understood. Methionine sulfoxide reductase A (MsrA) reduces methionine sulfoxide residues and functions as an antioxidant. To monitor the effect of methionine oxidation to α-synuclein on basic cellular processes, α-synucleins were expressed in msrA null mutant and wild-type yeast cells. Protein degradation was inhibited in the α-synuclein-expressing msrA null mutant cells compared to α-synuclein-expressing wild-type cells. Increased inhibition of degradation and elevated accumulations of fibrillated proteins were observed in SynA30P-expressing msrA null mutant cells. Additionally, methionine oxidation inhibited α-synuclein phosphorylation in yeast cells and in vitro by casein kinase 2. Thus, a compromised MsrA function combined with α-synuclein overexpression may promote processes leading to synucleinopathies.

Keywords

Oxidative stressPosttranslation modificationNeurodegenerative diseasesParkinson’s diseaseAntioxidantsProtein aggregationYeastSynuclein

Copyright information

© Humana Press 2009

Authors and Affiliations

  • Derek B. Oien
    • 1
  • Heather E. Shinogle
    • 2
  • David S. Moore
    • 2
  • Jackob Moskovitz
    • 1
  1. 1.Department of Pharmacology and Toxicology, School of PharmacyUniversity of KansasLawrenceUSA
  2. 2.Department of Biomedical Services LabsUniversity of KansasLawrenceUSA