4COD

Encoded library technology as a source of hits for the discovery and lead optimization of a potent and selective class of bactericidal direct inhibitors of Mycobacterium tuberculosis InhA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.206 
  • R-Value Work: 0.170 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Encoded Library Technology as a Source of Hits for the Discovery and Lead Optimization of a Potent and Selective Class of Bactericidal Direct Inhibitors of Mycobacterium Tuberculosis Inha.

Encinas, L.O'Keefe, H.Neu, M.Remuinan, M.J.Patel, A.M.Guardia, A.Davie, C.P.Perez-Macias, N.Yang, H.Convery, M.A.Messer, J.A.Perez-Herran, E.Centrella, P.A.Alvarez-Gomez, D.Clark, M.A.Huss, S.O'Donovan, G.K.Ortega-Muro, F.Mcdowell, W.Castaneda, P.Arico-Muendel, C.C.Pajk, S.Rullas, J.Angulo-Barturen, I.Alvarez-Ruiz, E.Mendoza-Losana, A.Pages, L.B.Castro-Pichel, J.Evindar, G.

(2014) J.Med.Chem. 57: 1276

  • DOI: 10.1021/jm401326j

  • PubMed Abstract: 
  • Tuberculosis (TB) is one of the world's oldest and deadliest diseases, killing a person every 20 s. InhA, the enoyl-ACP reductase from Mycobacterium tuberculosis, is the target of the frontline antitubercular drug isoniazid (INH). Compounds that dire ...

    Tuberculosis (TB) is one of the world's oldest and deadliest diseases, killing a person every 20 s. InhA, the enoyl-ACP reductase from Mycobacterium tuberculosis, is the target of the frontline antitubercular drug isoniazid (INH). Compounds that directly target InhA and do not require activation by mycobacterial catalase peroxidase KatG are promising candidates for treating infections caused by INH resistant strains. The application of the encoded library technology (ELT) to the discovery of direct InhA inhibitors yielded compound 7 endowed with good enzymatic potency but with low antitubercular potency. This work reports the hit identification, the selected strategy for potency optimization, the structure-activity relationships of a hundred analogues synthesized, and the results of the in vivo efficacy studies performed with the lead compound 65.


    Organizational Affiliation

    ELT Boston, Platform Technology & Science, GlaxoSmithKline , Waltham, Massachusetts 02451, United States.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ENOYL-[ACYL-CARRIER-PROTEIN] REDUCTASE [NADH]
B, D, F, H
269Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv)Mutation(s): 0 
Gene Names: inhA
EC: 1.3.1.9
Find proteins for P9WGR1 (Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv))
Go to UniProtKB:  P9WGR1
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NAD
Query on NAD

Download SDF File 
Download CCD File 
B, D, F, H
NICOTINAMIDE-ADENINE-DINUCLEOTIDE
C21 H27 N7 O14 P2
BAWFJGJZGIEFAR-NNYOXOHSSA-N
 Ligand Interaction
KV1
Query on KV1

Download SDF File 
Download CCD File 
B, D, F, H
N-((3R,5S)-1-(benzofuran-3-carbonyl)-5-(ethylcarbamoyl)pyrrolidin-3-yl)-3-ethyl-1-methyl-1H-pyrazole-5-carboxamide
C23 H27 N5 O4
NCHSTBMDNNMMEJ-BEFAXECRSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
KV1IC50: 34 nM (100) BINDINGDB
KV1IC50: 34 nM BINDINGMOAD
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.206 
  • R-Value Work: 0.170 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 100.180α = 90.00
b = 102.350β = 90.00
c = 179.360γ = 90.00
Software Package:
Software NamePurpose
MOSFLMdata reduction
PHASERphasing
BUSTERrefinement
SCALAdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-02-12
    Type: Initial release
  • Version 1.1: 2014-03-12
    Type: Database references
  • Version 1.2: 2014-03-19
    Type: Refinement description
  • Version 1.3: 2014-06-11
    Type: Refinement description