Human transthyretin (TTR) in complex with 3,5-Dimethyl-4-hydroxystilbene

Experimental Data Snapshot

  • Resolution: 1.52 Å
  • R-Value Free: 0.189 
  • R-Value Work: 0.161 
  • R-Value Observed: 0.162 

wwPDB Validation   3D Report Full Report

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Toward optimization of the linker substructure common to transthyretin amyloidogenesis inhibitors using biochemical and structural studies.

Johnson, S.M.Connelly, S.Wilson, I.A.Kelly, J.W.

(2008) J Med Chem 51: 6348-6358

  • DOI: https://doi.org/10.1021/jm800435s
  • Primary Citation of Related Structures:  
    3CN0, 3CN1, 3CN2, 3CN3, 3CN4

  • PubMed Abstract: 

    To develop potent and highly selective transthyretin (TTR) amyloidogenesis inhibitors, it is useful to systematically optimize the three substructural elements that compose a typical TTR kinetic stabilizer: the two aryl rings and the linker joining them. Herein, we evaluated 40 bisaryl molecules based on 10 unique linker substructures to determine how these linkages influence inhibitor potency and selectivity. These linkers connect one unsubstituted aromatic ring to either a 3,5-X 2 or a 3,5-X 2-4-OH phenyl substructure (X = Br or CH 3). Coconsideration of amyloid inhibition and ex vivo plasma TTR binding selectivity data reveal that direct connection of the two aryls or linkage through nonpolar E-olefin or -CH 2CH 2- substructures generates the most potent and selective TTR amyloidogenesis inhibitors exhibiting minimal undesirable binding to the thyroid hormone nuclear receptor or the COX-1 enzyme. Five high-resolution TTR.inhibitor crystal structures (1.4-1.8 A) provide insight into why such linkers afford inhibitors with greater potency and selectivity.

  • Organizational Affiliation

    Department of Chemistry, The Skaggs Institute for Chemical Biology, The Scripps Research Institute, BCC 265, 10550 North Torrey Pines Road, La Jolla, California 92037, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
A, B
127Homo 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
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP02766
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on LJ1

Download Ideal Coordinates CCD File 
C [auth A],
D [auth B]
C16 H16 O
Binding Affinity Annotations 
IDSourceBinding Affinity
LJ1 BindingDB:  3CN0 IC50: 3080 (nM) from 1 assay(s)
PDBBind:  3CN0 IC50: 3080 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Resolution: 1.52 Å
  • R-Value Free: 0.189 
  • R-Value Work: 0.161 
  • R-Value Observed: 0.162 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 43.022α = 90
b = 85.56β = 90
c = 64.52γ = 90
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
HKL-2000data collection
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2008-10-28
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance