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Atomic Force Microscopy of β-Amyloid

Static and Dynamic Studies of Nanostructure and Its Formation

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Atomic Force Microscopy

Part of the book series: Methods in Molecular Biology™ ((MIMB,volume 242))

Abstract

Ordered aggregation of the β-amyloid (Aβ) peptide in the brain as plaques consisting of fibrils is an important characteristic of Alzheimer’s disease (AD), a late onset neurodegenerative disease (1). Aβ derives from the endoproteolysis of the amyloid precursor protein (APP), which is a transmembrane protein containing 677–770 amino acids (2–9). The two most common forms of Aβ are the 40 and 42 residues long fragments respectively referred to as Aβ(40) and Aβ(42) (sequence shown in Fig. 1; ref. 10). The insoluble aggregated form of Aβ, which deposits in the extra cellular space in the brain and on the walls of cerebral blood vessels (6), exhibits an enhanced β-sheet conformation as opposed to the partially α-helical soluble form found in body fluids (11,12). Despite the lack of the definitive establishment of the causative role of Aβ in AD, evidence points to its aggregation and deposition in the pathogenesis of AD.

The sequence of Aβ peptide (10).

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Author information

Authors and Affiliations

  1. Department of Chemistry, Carnegie Mellon University, Pittsburgh, PA

    Justin Legleiter & Tomasz Kowalewski

Authors
  1. Justin Legleiter
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  2. Tomasz Kowalewski
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Editor information

Editors and Affiliations

  1. Department of Pharmacology School of Medicine, University of Milan, Milan, Italy

    Pier Carlo Braga

  2. Department of Biophysical and Electronic Engineering, University of Genoa, Genoa, Italy

    Davide Ricci

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© 2004 Humana Press Inc., Totowa, NJ

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Legleiter, J., Kowalewski, T. (2004). Atomic Force Microscopy of β-Amyloid. In: Braga, P.C., Ricci, D. (eds) Atomic Force Microscopy. Methods in Molecular Biology™, vol 242. Humana Press. https://doi.org/10.1385/1-59259-647-9:349

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  • DOI: https://doi.org/10.1385/1-59259-647-9:349

  • Publisher Name: Humana Press

  • Print ISBN: 978-1-58829-094-6

  • Online ISBN: 978-1-59259-647-8

  • eBook Packages: Springer Protocols

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