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  Conserved amyloid core structure of stop mutants of the human prion protein.

Zweckstetter, M. (2013). Conserved amyloid core structure of stop mutants of the human prion protein. Prion, 7(3), 193-197. doi:10.4161/pri.23956.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0014-C144-5 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0027-CB98-9
Genre: Journal Article

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Zweckstetter, M.1, Author              
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1Research Group of Protein Structure Determination using NMR, MPI for biophysical chemistry, Max Planck Society, ou_578571              

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 Abstract: Prion diseases are associated with misfolding of the natively -helical prion protein into isoforms that are rich in cross -structure. However, both the mechanism by which pathological conformations are produced and their structural properties remain unclear. Using a combination of nuclear magnetic resonance spectroscopy, computation, hydroxyl radical probing combined with mass-spectrometry and site-directed mutagenesis, we showed that prion stop mutants that accumulate in amyloidogenic plaque-forming aggregates fold into a -helix. The polymorphic residue 129 is located in the hydrophobic core of the -helix in line with a critical role of the 129 region in the packing of protein chains into prion particles. Together with electron microscopy our data support a trimeric left-handed -helix model in which the trimer interface is formed by residues L125, Y128 and L130. Different prion types or strains might be related to different aggregate structures or filament assemblies.

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Language(s): eng - English
 Dates: 2013-06
 Publication Status: Published in print
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 Rev. Method: Peer
 Identifiers: DOI: 10.4161/pri.23956
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Title: Prion
Source Genre: Journal
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Pages: - Volume / Issue: 7 (3) Sequence Number: - Start / End Page: 193 - 197 Identifier: -