E.coli FolC in complex with ADP, without folate substrate

Experimental Data Snapshot

  • Resolution: 2.10 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.177 

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This is version 1.3 of the entry. See complete history


Escherichia Coli Folc Structure Reveals an Unexpected Dihydrofolate Binding Site Providing an Attractive Target for Anti-Microbial Therapy

Mathieu, M.Debousker, G.Vincent, S.Viviani, F.Bamas-Jacques, N.Mikol, V.

(2005) J Biol Chem 280: 18916

  • DOI: https://doi.org/10.1074/jbc.M413799200
  • Primary Citation of Related Structures:  
    1W78, 1W7K

  • PubMed Abstract: 

    In some bacteria, such as Escherichia coli, the addition of L-glutamate to dihydropteroate (dihydrofolate synthetase activity) and the subsequent additions of L-glutamate to tetrahydrofolate (folylpolyglutamate synthetase (FPGS) activity) are catalyzed by the same enzyme, FolC. The crystal structure of E. coli FolC is described in this paper. It showed strong similarities to that of the FPGS enzyme of Lactobacillus casei within the ATP binding site and the catalytic site, as do all other members of the Mur synthethase superfamily. FolC structure revealed an unexpected dihydropteroate binding site very different from the folate site identified previously in the FPGS structure. The relevance of this site is exemplified by the presence of phosphorylated dihydropteroate, a reaction intermediate in the DHFS reaction. L. casei FPGS is considered a relevant model for human FPGS. As such, the presence of a folate binding site in E. coli FolC, which is different from the one seen in FPGS enzymes, provides avenues for the design of specific inhibitors of this enzyme in antimicrobial therapy.

  • Organizational Affiliation

    Department of Structural Biology, Aventis Pharma, 13 Quai J. Guesde, F-94403 Vitry/Seine, France. magali.mathieu@sanofi-aventis.com

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
FOLC BIFUNCTIONAL PROTEIN422Escherichia coliMutation(s): 0 
Find proteins for P08192 (Escherichia coli (strain K12))
Explore P08192 
Go to UniProtKB:  P08192
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP08192
Sequence Annotations
  • Reference Sequence
Small Molecules
Experimental Data & Validation

Experimental Data

  • Resolution: 2.10 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.177 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 66.112α = 90
b = 81.602β = 90
c = 93.673γ = 90
Software Package:
Software NamePurpose
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

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Ligand Structure Quality Assessment 

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2005-02-09
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2023-12-13
    Changes: Data collection, Database references, Derived calculations, Other, Refinement description