7O1Q

Amyloid beta oligomer displayed on the alpha hemolysin scaffold


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.40 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Cryo-electron Microscopy Imaging of Alzheimer's Amyloid-beta 42 Oligomer Displayed on a Functionally and Structurally Relevant Scaffold.

Wu, J.Blum, T.B.Farrell, D.P.DiMaio, F.Abrahams, J.P.Luo, J.

(2021) Angew Chem Int Ed Engl 60: 18680-18687

  • DOI: 10.1002/anie.202104497
  • Primary Citation of Related Structures:  
    7O1Q

  • PubMed Abstract: 
  • Amyloid-β peptide (Aβ) oligomers are pathogenic species of amyloid aggregates in Alzheimer's disease. Like certain protein toxins, Aβ oligomers permeabilize cellular membranes, presumably through a pore formation mechanism. Due to their structural and stoichiometric heterogeneity, the structure of these pores remains to be characterized ...

    Amyloid-β peptide (Aβ) oligomers are pathogenic species of amyloid aggregates in Alzheimer's disease. Like certain protein toxins, Aβ oligomers permeabilize cellular membranes, presumably through a pore formation mechanism. Due to their structural and stoichiometric heterogeneity, the structure of these pores remains to be characterized. We studied a functional Aβ42-pore equivalent, created by fusing Aβ42 to the oligomerizing, soluble domain of the α-hemolysin (αHL) toxin. Our data reveal Aβ42-αHL oligomers to share major structural, functional and biological properties with wild-type Aβ42-pores. Single-particle cryo-EM analysis of Aβ42-αHL oligomers (with an overall resolution of 3.3 Å) reveals the Aβ42-pore region to be intrinsically flexible. We anticipate that the Aβ42-αHL oligomers will allow studying many of the features of the wild type amyloid oligomers that cannot be studied otherwise, and may represent a highly specific antigen for the development of immuno-base diagnostics and therapies.


    Organizational Affiliation

    SWITZERLAND.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Alpha-hemolysin hybridized Abeta
A, B, C, D, E, F, G
A, B, C, D, E, F, G
293Staphylococcus aureusHomo sapiensMutation(s): 0 
Gene Names: hlyhlaAPPA4AD1
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for Q2G1X0 (Staphylococcus aureus (strain NCTC 8325 / PS 47))
Explore Q2G1X0 
Go to UniProtKB:  Q2G1X0
Find proteins for P05067 (Homo sapiens)
Explore P05067 
Go to UniProtKB:  P05067
PHAROS:  P05067
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupsP05067Q2G1X0
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.40 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2021-04-14
    Type: Initial release
  • Version 1.1: 2021-06-09
    Changes: Database references
  • Version 1.2: 2021-08-18
    Changes: Database references