Solution structure of the amyloid beta-peptide (1-42)

Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 10 
  • Selection Criteria: target function 

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This is version 1.4 of the entry. See complete history


Exploring the Early Stages of the Amyloid A beta (1-42) Peptide Aggregation Process: An NMR Study.

Santoro, A.Grimaldi, M.Buonocore, M.Stillitano, I.D'Ursi, A.M.

(2021) Pharmaceuticals (Basel) 14

  • DOI: https://doi.org/10.3390/ph14080732
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Alzheimer's disease (AD) is a neurodegenerative pathology characterized by the presence of neurofibrillary tangles and amyloid plaques, the latter mainly composed of Aβ(1-40) and Aβ(1-42) peptides. The control of the Aβ aggregation process as a therapeutic strategy for AD has prompted the interest to investigate the conformation of the Aβ peptides, taking advantage of computational and experimental techniques. Mixtures composed of systematically different proportions of HFIP and water have been used to monitor, by NMR, the conformational transition of the Aβ(1-42) from soluble α-helical structure to β-sheet aggregates. In the previous studies, 50/50 HFIP/water proportion emerged as the solution condition where the first evident Aβ(1-42) conformational changes occur. In the hypothesis that this solvent reproduces the best condition to catch transitional helical-β-sheet Aβ(1-42) conformations, in this study, we report an extensive NMR conformational analysis of Aβ(1-42) in 50/50 HFIP/water v / v . Aβ(1-42) structure was solved by us, giving evidence that the evolution of Aβ(1-42) peptide from helical to the β-sheet may follow unexpected routes. Molecular dynamics simulations confirm that the structural model we calculated represents a starting condition for amyloid fibrils formation.

  • Organizational Affiliation

    Department of Pharmacy, University of Salerno, Via Giovanni Paolo II, 132-84084 Fisciano, SA, Italy.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Amyloid-beta precursor protein42Homo sapiensMutation(s): 0 
Gene Names: APPA4AD1
UniProt & NIH Common Fund Data Resources
Find proteins for P05067 (Homo sapiens)
Explore P05067 
Go to UniProtKB:  P05067
PHAROS:  P05067
GTEx:  ENSG00000142192 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP05067
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 10 
  • Selection Criteria: target function 

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2020-10-14
    Type: Initial release
  • Version 1.1: 2021-08-04
    Changes: Database references
  • Version 1.2: 2021-08-11
    Changes: Database references
  • Version 1.3: 2021-09-22
    Changes: Data collection, Database references
  • Version 1.4: 2023-06-14
    Changes: Other