3M1O

Human Transthyretin (TTR) complexed with 2-((3,5-dichloro-4-hydroxyphenyl)amino)benzoic acid


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.2 Å
  • R-Value Free: 0.171 
  • R-Value Work: 0.143 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Trapping of palindromic ligands within native transthyretin prevents amyloid formation.

Kolstoe, S.E.Mangione, P.P.Bellotti, V.Taylor, G.W.Tennent, G.A.Deroo, S.Morrison, A.J.Cobb, A.J.Coyne, A.McCammon, M.G.Warner, T.D.Mitchell, J.Gill, R.Smith, M.D.Ley, S.V.Robinson, C.V.Wood, S.P.Pepys, M.B.

(2010) Proc.Natl.Acad.Sci.USA 107: 20483-20488

  • DOI: 10.1073/pnas.1008255107
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Transthyretin (TTR) amyloidosis is a fatal disease for which new therapeutic approaches are urgently needed. We have designed two palindromic ligands, 2,2'-(4,4'-(heptane-1,7-diylbis(oxy))bis(3,5-dichloro-4,1-phenylene)) bis(azanediyl)dibenzoic acid ...

    Transthyretin (TTR) amyloidosis is a fatal disease for which new therapeutic approaches are urgently needed. We have designed two palindromic ligands, 2,2'-(4,4'-(heptane-1,7-diylbis(oxy))bis(3,5-dichloro-4,1-phenylene)) bis(azanediyl)dibenzoic acid (mds84) and 2,2'-(4,4'-(undecane-1,11-diylbis(oxy))bis(3,5-dichloro-4,1-phenylene)) bis(azanediyl)dibenzoic acid (4ajm15), that are rapidly bound by native wild-type TTR in whole serum and even more avidly by amyloidogenic TTR variants. One to one stoichiometry, demonstrable in solution and by MS, was confirmed by X-ray crystallographic analysis showing simultaneous occupation of both T4 binding sites in each tetrameric TTR molecule by the pair of ligand head groups. Ligand binding by native TTR was irreversible under physiological conditions, and it stabilized the tetrameric assembly and inhibited amyloidogenic aggregation more potently than other known ligands. These superstabilizers are orally bioavailable and exhibit low inhibitory activity against cyclooxygenase (COX). They offer a promising platform for development of drugs to treat and prevent TTR amyloidosis.


    Organizational Affiliation

    Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, Royal Free Campus, University College London Medical School, London NW3 2PF, United Kingdom.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Transthyretin
A, B
127Homo sapiensMutation(s): 0 
Gene Names: TTR (PALB)
Find proteins for P02766 (Homo sapiens)
Go to Gene View: TTR
Go to UniProtKB:  P02766
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CJZ
Query on CJZ

Download SDF File 
Download CCD File 
A, B
2-[(3,5-dichloro-4-hydroxyphenyl)amino]benzoic acid
C13 H9 Cl2 N O3
AKTRZQGZDAYEOG-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.2 Å
  • R-Value Free: 0.171 
  • R-Value Work: 0.143 
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 42.525α = 90.00
b = 85.390β = 90.00
c = 63.625γ = 90.00
Software Package:
Software NamePurpose
DNAdata collection
MOSFLMdata reduction
REFMACrefinement
PHASERphasing
SCALAdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-11-17
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance
  • Version 1.2: 2017-11-08
    Type: Refinement description