5CG1

Crystal structure of E. coli FabI bound to the carbamoylated benzodiazaborine inhibitor 14b.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.07 Å
  • R-Value Free: 0.247 
  • R-Value Work: 0.204 
  • R-Value Observed: 0.207 

Starting Model: experimental
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This is version 1.1 of the entry. See complete history


Literature

Crystallographic insights into the structure-activity relationships of diazaborine enoyl-ACP reductase inhibitors.

Jordan, C.A.Sandoval, B.A.Serobyan, M.V.Gilling, D.H.Groziak, M.P.Xu, H.H.Vey, J.L.

(2015) Acta Crystallogr F Struct Biol Commun 71: 1521-1530

  • DOI: https://doi.org/10.1107/S2053230X15022098
  • Primary Citation of Related Structures:  
    5CFZ, 5CG1, 5CG2

  • PubMed Abstract: 

    Enoyl-ACP reductase, the last enzyme of the fatty-acid biosynthetic pathway, is the molecular target for several successful antibiotics such as the tuberculosis therapeutic isoniazid. It is currently under investigation as a narrow-spectrum antibiotic target for the treatment of several types of bacterial infections. The diazaborine family is a group of boron heterocycle-based synthetic antibacterial inhibitors known to target enoyl-ACP reductase. Development of this class of molecules has thus far focused solely on the sulfonyl-containing versions. Here, the requirement for the sulfonyl group in the diazaborine scaffold was investigated by examining several recently characterized enoyl-ACP reductase inhibitors that lack the sulfonyl group and exhibit additional variability in substitutions, size and flexibility. Biochemical studies are reported showing the inhibition of Escherichia coli enoyl-ACP reductase by four diazaborines, and the crystal structures of two of the inhibitors bound to E. coli enoyl-ACP reductase solved to 2.07 and 2.11 Å resolution are reported. The results show that the sulfonyl group can be replaced with an amide or thioamide without disruption of the mode of inhibition of the molecule.


  • Organizational Affiliation

    Department of Chemistry and Biochemistry, California State University Northridge, Northridge, CA 91330-8262, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Enoyl-[acyl-carrier-protein] reductase [NADH] FabI
A, B
305Escherichia coli K-12Mutation(s): 0 
Gene Names: fabIenvMb1288JW1281
EC: 1.3.1.9
UniProt
Find proteins for P0AEK4 (Escherichia coli (strain K12))
Explore P0AEK4 
Go to UniProtKB:  P0AEK4
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP0AEK4
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.07 Å
  • R-Value Free: 0.247 
  • R-Value Work: 0.204 
  • R-Value Observed: 0.207 
  • Space Group: P 61 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 80.07α = 90
b = 80.07β = 90
c = 325.016γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
SCALAdata scaling
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
CSUN Faculty DevelopmentUnited StatesProbationary Faculty Support Grant

Revision History  (Full details and data files)

  • Version 1.0: 2015-12-09
    Type: Initial release
  • Version 1.1: 2023-09-27
    Changes: Data collection, Database references, Derived calculations, Refinement description