6DSO

Cryo-EM structure of murine AA amyloid fibril


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3 Å
  • Aggregation State: HELICAL ARRAY 
  • Reconstruction Method: HELICAL 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Cryo-EM fibril structures from systemic AA amyloidosis reveal the species complementarity of pathological amyloids.

Liberta, F.Loerch, S.Rennegarbe, M.Schierhorn, A.Westermark, P.Westermark, G.T.Hazenberg, B.P.C.Grigorieff, N.Fandrich, M.Schmidt, M.

(2019) Nat Commun 10: 1104-1104

  • DOI: 10.1038/s41467-019-09033-z
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Systemic AA amyloidosis is a worldwide occurring protein misfolding disease of humans and animals. It arises from the formation of amyloid fibrils from the acute phase protein serum amyloid A. Here, we report the purification and electron cryo-micros ...

    Systemic AA amyloidosis is a worldwide occurring protein misfolding disease of humans and animals. It arises from the formation of amyloid fibrils from the acute phase protein serum amyloid A. Here, we report the purification and electron cryo-microscopy analysis of amyloid fibrils from a mouse and a human patient with systemic AA amyloidosis. The obtained resolutions are 3.0 Å and 2.7 Å for the murine and human fibril, respectively. The two fibrils differ in fundamental properties, such as presence of right-hand or left-hand twisted cross-β sheets and overall fold of the fibril proteins. Yet, both proteins adopt highly similar β-arch conformations within the N-terminal ~21 residues. Our data demonstrate the importance of the fibril protein N-terminus for the stability of the analyzed amyloid fibril morphologies and suggest strategies of combating this disease by interfering with specific fibril polymorphs.


    Organizational Affiliation

    Institute of Protein Biochemistry, Ulm University, 89081, Ulm, Germany.,Department of Medical Cell Biology, Uppsala University, SE-75123, Uppsala, Sweden.,Institute of Protein Biochemistry, Ulm University, 89081, Ulm, Germany. marcus.faendrich@uni-ulm.de.,Department of Rheumatology & Clinical Immunology, University of Groningen, University Medical Center Groningen, 9700 RB, Groningen, The Netherlands.,Department of Immunology, Genetics, and Pathology, Uppsala University, Uppsala, SE-751 85, Sweden.,Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA, 20147, USA.,Institute of Protein Biochemistry, Ulm University, 89081, Ulm, Germany. matthias.schmidt@uni-ulm.de.,Institute of Biochemistry and Biotechnology, Martin-Luther-University, 06120, Halle (Saale), Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Serum amyloid A-2 protein
A, B, C, D, E, F, G, H, I, J, K, L
83Mus musculusMutation(s): 0 
Gene Names: Saa2
Find proteins for P05367 (Mus musculus)
Go to UniProtKB:  P05367
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3 Å
  • Aggregation State: HELICAL ARRAY 
  • Reconstruction Method: HELICAL 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
German Research FoundationGermanyDFG FA 456/15-1
German Research FoundationGermanyDFG SCHM 3276/1

Revision History 

  • Version 1.0: 2019-03-13
    Type: Initial release
  • Version 1.1: 2019-04-03
    Type: Data collection, Database references
  • Version 1.2: 2019-04-17
    Type: Author supporting evidence, Data collection