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- W2160942335 abstract "The conformational properties of soluble α-synuclein, the primary protein found in patients with Parkinson's disease, are thought to play a key role in the structural transition to amyloid fibrils. In this work, we report that recombinant 100% N-terminal acetylated α-synuclein purified under mild physiological conditions presents as a primarily monomeric protein, and that the N-terminal acetyl group affects the transient secondary structure and fibril assembly rates of the protein. Residue-specific NMR chemical shift analysis indicates substantial increase in transient helical propensity in the first 9 N-terminal residues, as well as smaller long-range changes in residues 28-31, 43-46, and 50-66: regions in which the three familial mutations currently known to be causative of early onset disease are found. In addition, we show that the N-terminal acetylated protein forms fibrils that are morphologically similar to those formed from nonacetylated α-synuclein, but that their growth rates are slower. Our results highlight that N-terminal acetylation does not form significant numbers of dimers, tetramers, or higher molecular weight species, but does alter the conformational distributions of monomeric α-synuclein species in regions known to be important in metal binding, in association with membranes, and in regions known to affect fibril formation rates." @default.
- W2160942335 created "2016-06-24" @default.
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- W2160942335 date "2012-06-11" @default.
- W2160942335 modified "2023-10-17" @default.
- W2160942335 title "N-terminal acetylation of α-synuclein induces increased transient helical propensity and decreased aggregation rates in the intrinsically disordered monomer" @default.
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- W2160942335 doi "https://doi.org/10.1002/pro.2088" @default.
- W2160942335 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/3403430" @default.
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