Covalently stabilized triangular trimer composed of Abeta17-36 beta-hairpins

Experimental Data Snapshot

  • Resolution: 1.80 Å
  • R-Value Free: 0.247 
  • R-Value Work: 0.205 
  • R-Value Observed: 0.209 

wwPDB Validation   3D Report Full Report

This is version 1.2 of the entry. See complete history


Antibodies Raised Against an A beta Oligomer Mimic Recognize Pathological Features in Alzheimer's Disease and Associated Amyloid-Disease Brain Tissue.

Kreutzer, A.G.Parrocha, C.M.T.Haerianardakani, S.Guaglianone, G.Nguyen, J.T.Diab, M.N.Yong, W.Perez-Rosendahl, M.Head, E.Nowick, J.S.

(2024) ACS Cent Sci 10: 104-121

  • DOI: https://doi.org/10.1021/acscentsci.3c00592
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Antibodies that target the β-amyloid peptide (Aβ) and its associated assemblies are important tools in Alzheimer's disease research and have emerged as promising Alzheimer's disease therapies. This paper reports the creation and characterization of a triangular Aβ trimer mimic composed of Aβ 17-36 β-hairpins and the generation and study of polyclonal antibodies raised against the Aβ trimer mimic. The Aβ trimer mimic is covalently stabilized by three disulfide bonds at the corners of the triangular trimer to create a homogeneous oligomer. Structural, biophysical, and cell-based studies demonstrate that the Aβ trimer mimic shares characteristics with oligomers of full-length Aβ. X-ray crystallography elucidates the structure of the trimer and reveals that four copies of the trimer assemble to form a dodecamer. SDS-PAGE, size exclusion chromatography, and dynamic light scattering reveal that the trimer also forms higher-order assemblies in solution. Cell-based toxicity assays show that the trimer elicits LDH release, decreases ATP levels, and activates caspase-3/7 mediated apoptosis. Immunostaining studies on brain slices from people who lived with Alzheimer's disease and people who lived with Down syndrome reveal that the polyclonal antibodies raised against the Aβ trimer mimic recognize pathological features including different types of Aβ plaques and cerebral amyloid angiopathy.

  • Organizational Affiliation

    Department of Chemistry, University of California Irvine, Irvine, California 92697, United States.


Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Amyloid-beta 17-36 peptide
A, B, C
21Homo sapiensMutation(s): 0 
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
Small Molecules
Modified Residues  2 Unique
IDChains TypeFormula2D DiagramParent
Query on MEA
A, B, C
Query on ORN
A, B, C
Experimental Data & Validation

Experimental Data

  • Resolution: 1.80 Å
  • R-Value Free: 0.247 
  • R-Value Work: 0.205 
  • R-Value Observed: 0.209 
  • Space Group: P 62 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 62.054α = 90
b = 62.054β = 90
c = 47.839γ = 120
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
XDSdata reduction
pointlessdata scaling

Structure Validation

View Full Validation Report

Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute on Aging (NIH/NIA)United States1RF1AG062296-01
National Institutes of Health/National Institute on Aging (NIH/NIA)United States1RF1AG072587-01

Revision History  (Full details and data files)

  • Version 1.0: 2023-03-15
    Type: Initial release
  • Version 1.1: 2023-10-25
    Changes: Data collection, Refinement description
  • Version 1.2: 2024-03-27
    Changes: Database references