8TDN

Cryo-EM structure of cardiac amyloid fibril from a variant ATTR I84S amyloidosis patient-3, wild-type morphology

  • Classification: PROTEIN FIBRIL
  • Organism(s): Homo sapiens
  • Mutation(s): Yes 

  • Deposited: 2023-07-04 Released: 2023-12-13 
  • Deposition Author(s): Nguyen, B.A., Singh, V., Saelices, L.
  • Funding Organization(s): National Institutes of Health/National Heart, Lung, and Blood Institute (NIH/NHLBI), American Heart Association, Welch Foundation

Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.10 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: HELICAL 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structural polymorphism of amyloid fibrils in ATTR amyloidosis revealed by cryo-electron microscopy.

Nguyen, B.A.Singh, V.Afrin, S.Yakubovska, A.Wang, L.Ahmed, Y.Pedretti, R.Fernandez-Ramirez, M.D.C.Singh, P.Pekala, M.Cabrera Hernandez, L.O.Kumar, S.Lemoff, A.Gonzalez-Prieto, R.Sawaya, M.R.Eisenberg, D.S.Benson, M.D.Saelices, L.

(2024) Nat Commun 15: 581-581

  • DOI: https://doi.org/10.1038/s41467-024-44820-3
  • Primary Citation of Related Structures:  
    8E7E, 8E7J, 8TDN, 8TDO

  • PubMed Abstract: 

    ATTR amyloidosis is caused by the deposition of transthyretin in the form of amyloid fibrils in virtually every organ of the body, including the heart. This systemic deposition leads to a phenotypic variability that has not been molecularly explained yet. In brain amyloid conditions, previous studies suggest an association between clinical phenotype and the molecular structures of their amyloid fibrils. Here we investigate whether there is such an association in ATTRv amyloidosis patients carrying the mutation I84S. Using cryo-electron microscopy, we determined the structures of cardiac fibrils extracted from three ATTR amyloidosis patients carrying the ATTRv-I84S mutation, associated with a consistent clinical phenotype. We found that in each ATTRv-I84S patient, the cardiac fibrils exhibited different local conformations, and these variations can co-exist within the same fibril. Our finding suggests that one amyloid disease may associate with multiple fibril structures in systemic amyloidoses, calling for further studies.


  • Organizational Affiliation

    Center for Alzheimer's and Neurodegenerative Diseases, University of Texas Southwestern Medical Center (UTSW), Dallas, TX, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Transthyretin
A, B, C, D, E
147Homo sapiensMutation(s): 1 
UniProt & NIH Common Fund Data Resources
Find proteins for P02766 (Homo sapiens)
Explore P02766 
Go to UniProtKB:  P02766
PHAROS:  P02766
GTEx:  ENSG00000118271 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP02766
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.10 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: HELICAL 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Heart, Lung, and Blood Institute (NIH/NHLBI)United StatesDP2-HL163810
American Heart AssociationUnited StatesCareer Development Award 847236
Welch FoundationUnited StatesResearch Award I-2121-20220331

Revision History  (Full details and data files)

  • Version 1.0: 2023-12-13
    Type: Initial release
  • Version 1.1: 2024-03-13
    Changes: Database references