5U4G

Wild-type Transthyretin in complex with 2-Boronic Acid-1-[(1E)-2-(3-boronic acid)ethenyl]-4-chlorobenzene


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.223 
  • R-Value Work: 0.188 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Stilbene Boronic Acids Form a Covalent Bond with Human Transthyretin and Inhibit Its Aggregation.

Smith, T.P.Windsor, I.W.Forest, K.T.Raines, R.T.

(2017) J. Med. Chem. 60: 7820-7834

  • DOI: 10.1021/acs.jmedchem.7b00952
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Transthyretin (TTR) is a homotetrameric protein. Its dissociation into monomers leads to the formation of fibrils that underlie human amyloidogenic diseases. The binding of small molecules to the thyroxin-binding sites in TTR stabilizes the homotetra ...

    Transthyretin (TTR) is a homotetrameric protein. Its dissociation into monomers leads to the formation of fibrils that underlie human amyloidogenic diseases. The binding of small molecules to the thyroxin-binding sites in TTR stabilizes the homotetramer and attenuates TTR amyloidosis. Herein, we report on boronic acid-substituted stilbenes that limit TTR amyloidosis in vitro. Assays of affinity for TTR and inhibition of its tendency to form fibrils were coupled with X-ray crystallographic analysis of nine TTRĀ·ligand complexes. The ensuing structure-function data led to a symmetrical diboronic acid that forms a boronic ester reversibly with serine 117. This diboronic acid inhibits fibril formation by both wild-type TTR and a common disease-related variant, V30M TTR, as effectively as does tafamidis, a small-molecule drug used to treat TTR-related amyloidosis in the clinic. These findings establish a new modality for covalent inhibition of fibril formation and illuminate a path for future optimization.


    Organizational Affiliation

    Department of Chemistry, University of Wisconsin-Madison , Madison, Wisconsin 53706, United States.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Transthyretin
A, B
128Homo 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
7UV
Query on 7UV

Download SDF File 
Download CCD File 
A, B
(3-{(E)-2-[2-chloro-4-(hydroxyboranyl)phenyl]ethenyl}phenyl)boronic acid
C14 H13 B2 Cl O3
ZFFBGRNKFXBELR-SNAWJCMRSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.223 
  • R-Value Work: 0.188 
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 43.019α = 90.00
b = 85.118β = 90.00
c = 64.023γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data reduction
SCALEPACKdata scaling
PHASERphasing
PHENIXrefinement
HKLdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical SciencesUnited StatesT32 GM008349
National Institutes of Health/National Institute of General Medical SciencesUnited StatesR01 GM044783
National Science Foundation (United States)United StatesMCB 1518160

Revision History 

  • Version 1.0: 2017-09-27
    Type: Initial release
  • Version 1.1: 2017-10-11
    Type: Database references