3IL5

Structure of E. faecalis FabH in complex with 2-({4-bromo-3-[(diethylamino)sulfonyl]benzoyl}amino)benzoic acid


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.260 
  • R-Value Work: 0.189 

Starting Model: experimental
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This is version 1.3 of the entry. See complete history


Literature

Crystal structures of bacterial FabH suggest a molecular basis for the substrate specificity of the enzyme.

Gajiwala, K.S.Margosiak, S.Lu, J.Cortez, J.Su, Y.Nie, Z.Appelt, K.

(2009) FEBS Lett 583: 2939-2946

  • DOI: https://doi.org/10.1016/j.febslet.2009.08.001
  • Primary Citation of Related Structures:  
    3IL3, 3IL4, 3IL5, 3IL6, 3IL7, 3IL9

  • PubMed Abstract: 

    FabH (beta-ketoacyl-acyl carrier protein synthase III) is unique in that it initiates fatty acid biosynthesis, is inhibited by long-chain fatty acids providing means for feedback control of the process, and dictates the fatty acid profile of the organism by virtue of its substrate specificity. We report the crystal structures of bacterial FabH enzymes from four different pathogenic species: Enterococcus faecalis, Haemophilus influenzae, Staphylococcus aureus and Escherichia coli. Structural data on the enzyme from different species show important differences in the architecture of the substrate-binding sites that parallel the inter-species diversity in the substrate specificities of these enzymes.


  • Organizational Affiliation

    Quorex Pharmaceuticals, Carlsbad, CA 92008, USA. ketan.gajiwala@pfizer.com


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
3-oxoacyl-[acyl-carrier-protein] synthase 3
A, B, C, D
343Enterococcus faecalisMutation(s): 0 
Gene Names: EF_2885fabH
EC: 2.3.1.180
UniProt
Find proteins for Q820T1 (Enterococcus faecalis (strain ATCC 700802 / V583))
Explore Q820T1 
Go to UniProtKB:  Q820T1
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ820T1
Sequence Annotations
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  • Reference Sequence
Small Molecules
Binding Affinity Annotations 
IDSourceBinding Affinity
B82 PDBBind:  3IL5 IC50: 1600 (nM) from 1 assay(s)
BindingDB:  3IL5 IC50: 1600 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.260 
  • R-Value Work: 0.189 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 66.586α = 90
b = 84.973β = 98.5
c = 114.39γ = 90
Software Package:
Software NamePurpose
MAR345dtbdata collection
CNXrefinement
DENZOdata reduction
SCALEPACKdata scaling
CNXphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2009-08-25
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2018-01-24
    Changes: Structure summary
  • Version 1.3: 2023-09-06
    Changes: Data collection, Database references, Derived calculations, Refinement description