6EOY

Transthyretin in complex with 4-(1,3-Benzothiazol-2-yl)-2-methylaniline


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.38 Å
  • R-Value Free: 0.195 
  • R-Value Work: 0.160 
  • R-Value Observed: 0.162 

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Ligand Structure Quality Assessment 


This is version 1.1 of the entry. See complete history


Literature

Targeting transthyretin in Alzheimer's disease: Drug discovery of small-molecule chaperones as disease-modifying drug candidates for Alzheimer's disease.

Cotrina, E.Y.Santos, L.M.Rivas, J.Blasi, D.Leite, J.P.Liz, M.A.Busquets, M.A.Planas, A.Prohens, R.Gimeno, A.Jimenez-Barbero, J.Gales, L.Llop, J.Quintana, J.Cardoso, I.Arsequell, G.

(2021) Eur J Med Chem 226: 113847-113847

  • DOI: https://doi.org/10.1016/j.ejmech.2021.113847
  • Primary Citation of Related Structures:  
    6EOY

  • PubMed Abstract: 

    Transthyretin (TTR) has a well-established role in neuroprotection in Alzheimer's Disease (AD). We have setup a drug discovery program of small-molecule compounds that act as chaperones enhancing TTR/Amyloid-beta peptide (Aβ) interactions. A combination of computational drug repurposing approaches and in vitro biological assays have resulted in a set of molecules which were then screened with our in-house validated high-throughput screening ternary test. A prioritized list of chaperones was obtained and corroborated with ITC studies. Small-molecule chaperones have been discovered, among them our lead compound Iododiflunisal (IDIF), a molecule in the discovery phase; one investigational drug (luteolin); and 3 marketed drugs (sulindac, olsalazine and flufenamic), which could be directly repurposed or repositioned for clinical use. Not all TTR tetramer stabilizers behave as chaperones in vitro. These chemically diverse chaperones will be used for validating TTR as a target in vivo, and to select one repurposed drug as a candidate to enter clinical trials as AD disease-modifying drug.


  • Organizational Affiliation

    Institut de Química Avançada de Catalunya (I.Q.A.C.-C.S.I.C.), E-08034, Barcelona, Spain.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Transthyretin
A, B
115Homo sapiensMutation(s): 0 
Gene Names: TTRPALB
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
Small Molecules
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.38 Å
  • R-Value Free: 0.195 
  • R-Value Work: 0.160 
  • R-Value Observed: 0.162 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 42.863α = 90
b = 85.509β = 90
c = 64.275γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
Aimlessdata scaling
PDB_EXTRACTdata extraction
XDSdata reduction
PHASERphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2021-10-06
    Type: Initial release
  • Version 1.1: 2024-01-17
    Changes: Data collection, Refinement description