4XFO

Structure of an amyloid-forming segment TAVVTN from human Transthyretin


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.35 Å
  • R-Value Free: 0.148 
  • R-Value Work: 0.134 
  • R-Value Observed: 0.135 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Uncovering the Mechanism of Aggregation of Human Transthyretin.

Saelices, L.Johnson, L.M.Liang, W.Y.Sawaya, M.R.Cascio, D.Ruchala, P.Whitelegge, J.Jiang, L.Riek, R.Eisenberg, D.S.

(2015) J Biol Chem 290: 28932-28943

  • DOI: https://doi.org/10.1074/jbc.M115.659912
  • Primary Citation of Related Structures:  
    4TKW, 4TL4, 4TL5, 4TLK, 4TLS, 4TLT, 4TM9, 4TNE, 4XFN, 4XFO

  • PubMed Abstract: 

    The tetrameric thyroxine transport protein transthyretin (TTR) forms amyloid fibrils upon dissociation and monomer unfolding. The aggregation of transthyretin has been reported as the cause of the life-threatening transthyretin amyloidosis. The standard treatment of familial cases of TTR amyloidosis has been liver transplantation. Although aggregation-preventing strategies involving ligands are known, understanding the mechanism of TTR aggregation can lead to additional inhibition approaches. Several models of TTR amyloid fibrils have been proposed, but the segments that drive aggregation of the protein have remained unknown. Here we identify β-strands F and H as necessary for TTR aggregation. Based on the crystal structures of these segments, we designed two non-natural peptide inhibitors that block aggregation. This work provides the first characterization of peptide inhibitors for TTR aggregation, establishing a novel therapeutic strategy.


  • Organizational Affiliation

    From the Department of Biological Chemistry, Department of Chemistry and Biochemistry, and Howard Hughes Medical Institute, UCLA, Los Angeles, California 90095-1570, Swiss Federal Institute of Technology in Zürich (ETH), Physical Chemistry, ETH Hönggerberg, 8093 Zürich, Switzerland, and.


Macromolecules

Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Amyloid-forming peptide TAVVTN6synthetic constructMutation(s): 0 
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.35 Å
  • R-Value Free: 0.148 
  • R-Value Work: 0.134 
  • R-Value Observed: 0.135 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 4.75α = 77.64
b = 10.66β = 87.81
c = 16.39γ = 77.61
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XSCALEdata scaling
MOLREPphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Marie Curie ActionsSwitzerland298559

Revision History  (Full details and data files)

  • Version 1.0: 2015-10-21
    Type: Initial release
  • Version 1.1: 2015-10-28
    Changes: Database references
  • Version 1.2: 2015-12-09
    Changes: Database references
  • Version 1.3: 2024-02-28
    Changes: Data collection, Database references, Derived calculations