Amyloid-beta 42 filaments extracted from the human brain with Arctic mutation (E22G) of Alzheimer's disease | ABeta42

Experimental Data Snapshot

  • Resolution: 2.80 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: HELICAL 

wwPDB Validation   3D Report Full Report

This is version 1.1 of the entry. See complete history


Cryo-EM structures of amyloid-beta filaments with the Arctic mutation (E22G) from human and mouse brains.

Yang, Y.Zhang, W.Murzin, A.G.Schweighauser, M.Huang, M.Lovestam, S.Peak-Chew, S.Y.Saito, T.Saido, T.C.Macdonald, J.Lavenir, I.Ghetti, B.Graff, C.Kumar, A.Nordberg, A.Goedert, M.Scheres, S.H.W.

(2023) Acta Neuropathol 145: 325-333

  • DOI: https://doi.org/10.1007/s00401-022-02533-1
  • Primary Citation of Related Structures:  
    8BFZ, 8BG0, 8BG9

  • PubMed Abstract: 

    The Arctic mutation, encoding E693G in the amyloid precursor protein (APP) gene [E22G in amyloid-β (Aβ)], causes dominantly inherited Alzheimer's disease. Here, we report the high-resolution cryo-EM structures of Aβ filaments from the frontal cortex of a previously described case (AβPParc1) with the Arctic mutation. Most filaments consist of two pairs of non-identical protofilaments that comprise residues V12-V40 (human Arctic fold A) and E11-G37 (human Arctic fold B). They have a substructure (residues F20-G37) in common with the folds of type I and type II Aβ42. When compared to the structures of wild-type Aβ42 filaments, there are subtle conformational changes in the human Arctic folds, because of the lack of a side chain at G22, which may strengthen hydrogen bonding between mutant Aβ molecules and promote filament formation. A minority of Aβ42 filaments of type II was also present, as were tau paired helical filaments. In addition, we report the cryo-EM structures of Aβ filaments with the Arctic mutation from mouse knock-in line App NL-G-F . Most filaments are made of two identical mutant protofilaments that extend from D1 to G37 (App NL-G-F murine Arctic fold). In a minority of filaments, two dimeric folds pack against each other in an anti-parallel fashion. The App NL-G-F murine Arctic fold differs from the human Arctic folds, but shares some substructure.

  • Organizational Affiliation

    Medical Research Council Laboratory of Molecular Biology, Cambridge, UK.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Amyloid-beta precursor protein
A, B
42Homo 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
Experimental Data & Validation

Experimental Data

  • Resolution: 2.80 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: HELICAL 
EM Software:
TaskSoftware PackageVersion

Structure Validation

View Full Validation Report

Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
Medical Research Council (MRC, United Kingdom)United KingdomMC_UP_A025-1013
Medical Research Council (MRC, United Kingdom)United KingdomMC_U105184291

Revision History  (Full details and data files)

  • Version 1.0: 2023-01-18
    Type: Initial release
  • Version 1.1: 2024-01-31
    Changes: Data collection, Database references, Refinement description