1ZW1

Synthesis, Biological Activity, and X-Ray Crystal Structural Analysis of Diaryl Ether Inhibitors of Malarial Enoyl ACP Reductase. Part 1:4'-Substituted Triclosan Derivatives


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.9 Å
  • R-Value Free: 0.297 
  • R-Value Work: 0.228 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Synthesis, biological activity, and X-ray crystal structural analysis of diaryl ether inhibitors of malarial enoyl acyl carrier protein reductase. Part 1: 4'-Substituted triclosan derivatives.

Freundlich, J.S.Anderson, J.W.Sarantakis, D.Shieh, H.M.Yu, M.Valderramos, J.C.Lucumi, E.Kuo, M.Jacobs, W.R.Fidock, D.A.Schiehser, G.A.Jacobus, D.P.Sacchettini, J.C.

(2005) Bioorg.Med.Chem.Lett. 15: 5247-5252

  • DOI: 10.1016/j.bmcl.2005.08.044
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • A structure-based approach has been taken to develop 4'-substituted analogs of triclosan that target the key malarial enzyme Plasmodium falciparum enoyl acyl carrier protein reductase (PfENR). Many of these compounds exhibit nanomolar potency against ...

    A structure-based approach has been taken to develop 4'-substituted analogs of triclosan that target the key malarial enzyme Plasmodium falciparum enoyl acyl carrier protein reductase (PfENR). Many of these compounds exhibit nanomolar potency against purified PfENR enzyme and modest (2-10microM) potency against in vitro cultures of drug-resistant and drug-sensitive strains of the P. falciparum parasite. X-ray crystal structures of nitro 29, aniline 30, methylamide 37, and urea 46 demonstrate the presence of hydrogen-bonding interactions with residues in the active site and point to future rounds of optimization to improve compound potency against purified enzyme and intracellular parasites.


    Organizational Affiliation

    Department of Medicinal Chemistry, Jacobus Pharmaceutical Company, 37 Cleveland Lane, Princeton, NJ 08540, USA. j_freundlich@jacobuspharm.com




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
enoyl-acyl carrier reductase
A, B
336Plasmodium falciparumMutation(s): 0 
Gene Names: FabI
Find proteins for Q9BH77 (Plasmodium falciparum)
Go to UniProtKB:  Q9BH77
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NAD
Query on NAD

Download SDF File 
Download CCD File 
A, B
NICOTINAMIDE-ADENINE-DINUCLEOTIDE
C21 H27 N7 O14 P2
BAWFJGJZGIEFAR-NNYOXOHSSA-N
 Ligand Interaction
TN5
Query on TN5

Download SDF File 
Download CCD File 
A, B
2-(4-AMINO-2-CHLOROPHENOXY)-5-CHLOROPHENOL
C12 H9 Cl2 N O2
MCYCMAVHVQGDNE-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
TN5IC50: 360 nM (99) BINDINGDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.9 Å
  • R-Value Free: 0.297 
  • R-Value Work: 0.228 
  • Space Group: P 43 21 2
Unit Cell:
Length (Å)Angle (°)
a = 131.266α = 90.00
b = 131.266β = 90.00
c = 82.897γ = 90.00
Software Package:
Software NamePurpose
XDIPdata reduction
SCALEPACKdata scaling
XDIPdata collection
CNSphasing
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-06-06
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Derived calculations, Version format compliance