4O1M

Toxoplasma gondii Enoyl acyl carrier protein reductase


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.199 
  • R-Value Work: 0.169 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The benzimidazole based drugs show good activity against T. gondii but poor activity against its proposed enoyl reductase enzyme target

Wilkinson, C.Mcphillie, M.J.Zhou, Y.Woods, S.Afanador, G.A.Rawson, S.Khaliq, F.Prigge, S.T.Roberts, C.W.Rice, D.W.Mcleod, R.Fishwick, C.W.Muench, S.P.

(2014) Bioorg.Med.Chem.Lett. 24: 911-916

  • DOI: 10.1016/j.bmcl.2013.12.066

  • PubMed Abstract: 
  • The enoyl acyl-carrier protein reductase (ENR) enzyme of the apicomplexan parasite family has been intensely studied for antiparasitic drug design for over a decade, with the most potent inhibitors targeting the NAD(+) bound form of the enzyme. Howev ...

    The enoyl acyl-carrier protein reductase (ENR) enzyme of the apicomplexan parasite family has been intensely studied for antiparasitic drug design for over a decade, with the most potent inhibitors targeting the NAD(+) bound form of the enzyme. However, the higher affinity for the NADH co-factor over NAD(+) and its availability in the natural environment makes the NADH complex form of ENR an attractive target. Herein, we have examined a benzimidazole family of inhibitors which target the NADH form of Francisella ENR, but despite good efficacy against Toxoplasma gondii, the IC50 for T. gondii ENR is poor, with no inhibitory activity at 1 μM. Moreover similar benzimidazole scaffolds are potent against fungi which lack the ENR enzyme and as such we believe that there may be significant off target effects for this family of inhibitors.


    Organizational Affiliation

    School of Biomedical Sciences, University of Leeds, Leeds, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Enoyl-acyl carrier reductase
A, B, C, D, E, F
315Toxoplasma gondiiMutation(s): 0 
Gene Names: ENR
Find proteins for Q6UCJ9 (Toxoplasma gondii)
Go to UniProtKB:  Q6UCJ9
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NAD
Query on NAD

Download SDF File 
Download CCD File 
A, B, C, D, E, F
NICOTINAMIDE-ADENINE-DINUCLEOTIDE
C21 H27 N7 O14 P2
BAWFJGJZGIEFAR-NNYOXOHSSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.199 
  • R-Value Work: 0.169 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 136.400α = 90.00
b = 75.570β = 90.10
c = 188.330γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
MOSFLMdata reduction
PROTEUM PLUSdata collection
PHASERphasing
SCALAdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-02-05
    Type: Initial release
  • Version 1.1: 2014-02-12
    Type: Database references
  • Version 1.2: 2014-05-07
    Type: Other