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A New Structural Model of Aβ40 Fibrils

Open access
Bertini, Ivano, Gonnelli, Leonardo, Luchinat, Claudio, Mao, Jiafei, Nesi, Antonella·2011·Journal of the American Chemical Society

Abstract

The amyloid fibrils of beta-amyloid (Aβ) peptides play important roles in the pathology of Alzheimer's disease. Comprehensive solid-state NMR (SSNMR) structural studies on uniformly isotope-labeled Aβ assemblies have been hampered for a long time by sample heterogeneity and low spectral resolution. In this work, SSNMR studies on well-ordered fibril samples of Aβ(40) with an additional N-terminal methionine provide high-resolution spectra which lead to an accurate structural model. The fibrils studied here carry distinct structural features compared to previous reports. The inter-β-strand contacts within the U-shaped β-strand-turn-β-strand motif are shifted, the N-terminal region adopts a β-conformation, and new inter-monomer contacts occur at the protofilament interface. The revealed structural diversity in Aβ fibrils points to a complex picture of Aβ fibrillation.

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Metadata

Authors
Bertini, I., Gonnelli, L., Luchinat, C., Mao, J., & Nesi, A.
Venue
Journal of the American Chemical Society
Published
2011-09-21
Volume
133
Issue
40
Pages
16013-16022
ISSN
  • 0002-7863 (ISSN-L)
  • 1520-5126
OpenAlex
W192124582
Cited by
308
References
6
FWCI
18.88
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: A New Structural Model of Aβ40 Fibrils. https://app.cochat.ai/papers/10.1021/ja2035859
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Bertini, I., Gonnelli, L., Luchinat, C., Mao, J., & Nesi, A. (2011). A New Structural Model of Aβ40 Fibrils. Journal of the American Chemical Society. https://doi.org/10.1021/ja2035859

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.