5N1I

unliganded form of the Mycobacterium tuberculosis repressor EthR2


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.268 
  • R-Value Work: 0.219 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Reversion of antibiotic resistance in Mycobacterium tuberculosis by spiroisoxazoline SMARt-420.

Blondiaux, N.Moune, M.Desroses, M.Frita, R.Flipo, M.Mathys, V.Soetaert, K.Kiass, M.Delorme, V.Djaout, K.Trebosc, V.Kemmer, C.Wintjens, R.Wohlkonig, A.Antoine, R.Huot, L.Hot, D.Coscolla, M.Feldmann, J.Gagneux, S.Locht, C.Brodin, P.Gitzinger, M.Deprez, B.Willand, N.Baulard, A.R.

(2017) Science 355: 1206-1211

  • DOI: 10.1126/science.aag1006
  • Primary Citation of Related Structures:  
  • Also Cited By: 5N7O

  • PubMed Abstract: 
  • Antibiotic resistance is one of the biggest threats to human health globally. Alarmingly, multidrug-resistant and extensively drug-resistant Mycobacterium tuberculosis have now spread worldwide. Some key antituberculosis antibiotics are prodrugs, for ...

    Antibiotic resistance is one of the biggest threats to human health globally. Alarmingly, multidrug-resistant and extensively drug-resistant Mycobacterium tuberculosis have now spread worldwide. Some key antituberculosis antibiotics are prodrugs, for which resistance mechanisms are mainly driven by mutations in the bacterial enzymatic pathway required for their bioactivation. We have developed drug-like molecules that activate a cryptic alternative bioactivation pathway of ethionamide in M. tuberculosis, circumventing the classic activation pathway in which resistance mutations have now been observed. The first-of-its-kind molecule, named SMARt-420 (Small Molecule Aborting Resistance), not only fully reverses ethionamide-acquired resistance and clears ethionamide-resistant infection in mice, it also increases the basal sensitivity of bacteria to ethionamide.


    Related Citations: 
    • Structural analysis of the interaction between spiroisoxazoline SMARt-420 and the Mycobacterium tuberculosis repressor EthR2.
      Wohlkonig, A.,Remaut, H.,Moune, M.,Tanina, A.,Meyer, F.,Desroses, M.,Steyaert, J.,Willand, N.,Baulard, A.R.,Wintjens, R.
      (2017) Biochem. Biophys. Res. Commun. 487: 403


    Organizational Affiliation

    Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019-UMR8204-CIIL-Center for Infection and Immunity of Lille, F-59000 Lille, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Probable transcriptional regulatory protein
A, B
221Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv)Mutation(s): 0 
Find proteins for O53623 (Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv))
Go to UniProtKB:  O53623
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.268 
  • R-Value Work: 0.219 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 59.850α = 90.00
b = 74.470β = 90.00
c = 89.520γ = 90.00
Software Package:
Software NamePurpose
XDSdata reduction
MOLREPphasing
REFMACrefinement
XDSdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2017-04-26
    Type: Initial release
  • Version 1.1: 2017-12-13
    Type: Database references