5VOS

VGSNKGAIIGL from Amyloid Beta determined by MicroED


Experimental Data Snapshot

  • Method: ELECTRON CRYSTALLOGRAPHY
  • Aggregation State: 3D ARRAY 
  • Reconstruction Method: CRYSTALLOGRAPHY 

wwPDB Validation 3D Report Full Report


This is version 1.5 of the entry. See complete history

Literature

Common fibrillar spines of amyloid-beta and human islet amyloid polypeptide revealed by microelectron diffraction and structure-based inhibitors.

Krotee, P.Griner, S.L.Sawaya, M.R.Cascio, D.Rodriguez, J.A.Shi, D.Philipp, S.Murray, K.Saelices, L.Lee, J.Seidler, P.Glabe, C.G.Jiang, L.Gonen, T.Eisenberg, D.S.

(2018) J. Biol. Chem. 293: 2888-2902

  • DOI: 10.1074/jbc.M117.806109

  • PubMed Abstract: 
  • Amyloid-β (Aβ) and human islet amyloid polypeptide (hIAPP) aggregate to form amyloid fibrils that deposit in tissues and are associated with Alzheimer's disease (AD) and type II diabetes (T2D), respectively. Individuals with T2D have an increased ris ...

    Amyloid-β (Aβ) and human islet amyloid polypeptide (hIAPP) aggregate to form amyloid fibrils that deposit in tissues and are associated with Alzheimer's disease (AD) and type II diabetes (T2D), respectively. Individuals with T2D have an increased risk of developing AD, and conversely, AD patients have an increased risk of developing T2D. Evidence suggests that this link between AD and T2D might originate from a structural similarity between aggregates of Aβ and hIAPP. Using the cryoEM method microelectron diffraction, we determined the atomic structures of 11-residue segments from both Aβ and hIAPP, termed Aβ(24-34) WT and hIAPP(19-29) S20G, with 64% sequence similarity. We observed a high degree of structural similarity between their backbone atoms (0.96-Å root mean square deviation). Moreover, fibrils of these segments induced amyloid formation through self- and cross-seeding. Furthermore, inhibitors designed for one segment showed cross-efficacy for full-length Aβ and hIAPP and reduced cytotoxicity of both proteins, although by apparently blocking different cytotoxic mechanisms. The similarity of the atomic structures of Aβ(24-34) WT and hIAPP(19-29) S20G offers a molecular model for cross-seeding between Aβ and hIAPP.


    Organizational Affiliation

    Biochemistry Department, Faculty of Science and Experimental Biochemistry Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah 22252, Saudi Arabia, and.,Department of Neurology, Molecular Biology Institute, and Brain Research Institute (BRI), David Geffen School of Medicine, UCLA, Los Angeles, California, 90095.,From the Howard Hughes Medical Institute, UCLA-United States Department of Energy (DOE) Institute, Departments of Biological Chemistry and Chemistry and Biochemistry, Molecular Biology Institute, UCLA, Los Angeles, California 90095.,From the Howard Hughes Medical Institute, UCLA-United States Department of Energy (DOE) Institute, Departments of Biological Chemistry and Chemistry and Biochemistry, Molecular Biology Institute, UCLA, Los Angeles, California 90095, david@mbi.ucla.edu.,Department of Molecular Biology and Biochemistry, University of California, Irvine, California 92697.,Howard Hughes Medical Institute, Janelia Research Campus, Ashburn, Virginia 20147.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Amyloid beta A4 protein
A
11Homo sapiensMutation(s): 0 
Gene Names: APP (A4, AD1)
Find proteins for P05067 (Homo sapiens)
Go to Gene View: APP
Go to UniProtKB:  P05067
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON CRYSTALLOGRAPHY
  • Aggregation State: 3D ARRAY 
  • Reconstruction Method: CRYSTALLOGRAPHY 
Software Package:
Software NamePurpose
REFMACrefinement
PDB_EXTRACTdata extraction
XSCALEdata scaling
XDSdata reduction
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Howard Hughes Medical Institute (HHMI)United States--

Revision History 

  • Version 1.0: 2018-01-03
    Type: Initial release
  • Version 1.1: 2018-01-10
    Type: Database references
  • Version 1.2: 2018-03-07
    Type: Database references
  • Version 1.3: 2018-04-25
    Type: Data collection
  • Version 1.4: 2018-06-06
    Type: Data collection, Refinement description
  • Version 1.5: 2019-11-20
    Type: Author supporting evidence