Cited by 1,021Alzheimer's disease research and treatmentsDementia and Cognitive Impairment ResearchPrion Diseases and Protein Misfolding

Assembly of τ protein into Alzheimer paired helical filaments depends on a local sequence motif ( 306 VQIVYK 311 ) forming β structure

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von Bergen, M., Friedhoff, P., Biernat, J., Heberle, J., Mandelkow, E.-M., Mandelkow, E.·2000·Proceedings of the National Academy of Sciences

Abstract

We have searched for a minimal interaction motif in τ protein that supports the aggregation into Alzheimer-like paired helical filaments. Digestion of the repeat domain with different proteases yields a GluC-induced fragment comprising 43 residues (termed PHF43), which represents the third repeat of τ plus some flanking residues. This fragment self assembles readily into thin filaments without a paired helical appearance, but these filaments are highly competent to nucleate bona fide PHFs from full-length τ. Probing the interactions of PHF43 with overlapping peptides derived from the full τ sequence yields a minimal hexapeptide interaction motif of 306 VQIVYK 311 at the beginning of the third internal repeat. This motif coincides with the highest predicted β-structure potential in τ. CD and Fourier transform infrared spectroscopy shows that PHF43 acquires pronounced β structure in conditions of self assembly. Point mutations in the hexapeptide region by proline-scanning mutagenesis prevent the aggregation. The data indicate that PHF assembly is initiated by a short fragment containing the minimal interaction motif forming a local β structure embedded in a largely random-coil protein.

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Crossref · 10.1073/pnas.97.10.5129

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  • Hexapeptide VQIINK motifs in the second repeat and VQIVYK in the third repeat within the tau microtubule-binding domain are crucial for the formation of β-sheet structures and consequent tau aggregation.

    “Hexapeptide VQIINK motifs in the second repeat and VQIVYK in the third repeat within the tau microtubule-binding domain are crucial for the formation of β-sheet structures and consequent tau aggregation [221, 222].”

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Research works printed but not linked: 6

  1. [7]Schweers O, Schönbrunn-Hanebeck E, Marx A, Mandelkow E. J Biol Chem. 1994;269:24290–24297. [PubMed] [Google Scholar]
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Authors
von Bergen, M., Friedhoff, P., Biernat, J., Heberle, J., Mandelkow, E.-M., & Mandelkow, E.
Affiliations
  • Max Planck Unit for Structural Molecular Biology, Notkestrasse 85, 22607 Hamburg, Germany; Institut fur Biochemie, Justus-Liebig-Universität, 35392 Giessen, Germany; and Institut fur Biologische Informationsverarbeitung 2, Forschungszentrum, 52428 Julich, Germany
  • Max Planck Society (DE)
Venue
Proceedings of the National Academy of Sciences
Published
2000-05-09
Volume
97
Issue
10
Pages
5129-5134
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2142366168
Cited by
1,021
References
39
Citations by year
2026: 45 · 2025: 47 · 2024: 48 · 2023: 60 · 2022: 53 · 2021: 69 · 2020: 62 · 2019: 75 · 2018: 65 · 2017: 44 · 2016: 45 · 2015: 37 · 2014: 40 · 2013: 28 · 2012: 40
FWCI
8.78
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Prion Diseases and Protein Misfolding
Keywords
tau protein, paired helical filaments, Alzheimer's disease, protein aggregation, beta-structure, nucleation, repeat domain, self-assembly
MeSH terms
Alzheimer Disease, Amino Acid Sequence, Circular Dichroism, Humans, Kinetics, Models, Molecular, Molecular Sequence Data, Peptide Fragments, Recombinant Proteins, Amyloid beta-Peptides, Mutagenesis, Site-Directed, tau Proteins, Point Mutation, Protein Structure, Secondary, Spectroscopy, Fourier Transform Infrared, Repetitive Sequences, Amino Acid

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