5MYW

Structure of Transcriptional Regulatory Repressor Protein - EthR from Mycobacterium Tuberculosis in complex with compound SB-435634 at 1.77A resolution


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.77 Å
  • R-Value Free: 0.198 
  • R-Value Work: 0.176 
  • R-Value Observed: 0.177 

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Ligand Structure Quality Assessment 


This is version 1.1 of the entry. See complete history


Literature

Target Identification of Mycobacterium tuberculosis Phenotypic Hits Using a Concerted Chemogenomic, Biophysical, and Structural Approach.

Mugumbate, G.Mendes, V.Blaszczyk, M.Sabbah, M.Papadatos, G.Lelievre, J.Ballell, L.Barros, D.Abell, C.Blundell, T.L.Overington, J.P.

(2017) Front Pharmacol 8: 681-681

  • DOI: https://doi.org/10.3389/fphar.2017.00681
  • Primary Citation of Related Structures:  
    5MXV, 5MYL, 5MYM, 5MYN, 5MYR, 5MYS, 5MYT, 5MYW

  • PubMed Abstract: 

    Mycobacterium phenotypic hits are a good reservoir for new chemotypes for the treatment of tuberculosis. However, the absence of defined molecular targets and modes of action could lead to failure in drug development. Therefore, a combination of ligand-based and structure-based chemogenomic approaches followed by biophysical and biochemical validation have been used to identify targets for Mycobacterium tuberculosis phenotypic hits. Our approach identified EthR and InhA as targets for several hits, with some showing dual activity against these proteins. From the 35 predicted EthR inhibitors, eight exhibited an IC 50 below 50 μM against M. tuberculosis EthR and three were confirmed to be also simultaneously active against InhA. Further hit validation was performed using X-ray crystallography yielding eight new crystal structures of EthR inhibitors. Although the EthR inhibitors attain their activity against M. tuberculosis by hitting yet undefined targets, these results provide new lead compounds that could be further developed to be used to potentiate the effect of EthA activated pro-drugs, such as ethionamide, thus enhancing their bactericidal effect.


  • Organizational Affiliation

    European Molecular Biology Laboratory, European Bioinformatics Institute, Cambridge, United Kingdom.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
HTH-type transcriptional regulator EthR228Mycobacterium tuberculosis H37RvMutation(s): 0 
Gene Names: ethRetaRRv3855
UniProt
Find proteins for P9WMC1 (Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv))
Explore P9WMC1 
Go to UniProtKB:  P9WMC1
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP9WMC1
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
WCU
Query on WCU

Download Ideal Coordinates CCD File 
B [auth A]~{N}2-(1,3-benzodioxol-5-yl)benzene-1,2-diamine
C13 H12 N2 O2
QMKMDIGODMXIIE-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.77 Å
  • R-Value Free: 0.198 
  • R-Value Work: 0.176 
  • R-Value Observed: 0.177 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 121.528α = 90
b = 121.528β = 90
c = 33.758γ = 90
Software Package:
Software NamePurpose
SCALAdata scaling
PHENIXrefinement
PDB_EXTRACTdata extraction
XDSdata reduction
PHASERphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Bill & Melinda Gates FoundationUnited States--

Revision History  (Full details and data files)

  • Version 1.0: 2017-10-25
    Type: Initial release
  • Version 1.1: 2024-01-17
    Changes: Data collection, Database references, Refinement description