Biological Assembly 1  

 3D View: Structure | 1D-3D View | Validation Report | Ligand Interaction

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors and generated by PQS (software)

Macromolecule Content

• Total Structure Weight: 46.46 kDa 
• Atom Count: 3692 
• Modelled Residue Count: 414 
• Deposited Residue Count: 422 
• Unique protein chains: 1

1W78

E.coli FolC in complex with DHPP and ADP

• PDB DOI: 10.2210/pdb1W78/pdb

• Classification: SYNTHASE
• Organism(s): Escherichia coli
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2004-08-31 Released: 2005-02-09 
• Deposition Author(s): Mathieu, M., Debousker, G., Vincent, S., Viviani, F., Bamas-Jacques, N., Mikol, V.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.82 Å
• R-Value Free: 0.203 
• R-Value Work: 0.165 

Literature

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

• PubMed: 15705579 
• DOI: 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. [e-mail]

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
FOLC BIFUNCTIONAL PROTEIN	A	422	Escherichia coli	Mutation(s): 0  EC: 6.3.2.12 (PDB Primary Data), 6.3.2.17 (UniProt)
UniProt
Find proteins for P08192 (Escherichia coli (strain K12)) Explore P08192  Go to UniProtKB:  P08192

Small Molecules

Ligands 4 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
ADP	F [auth A]	ADENOSINE-5'-DIPHOSPHATE C10 H15 N5 O10 P2 XTWYTFMLZFPYCI-KQYNXXCUSA-N
PD8	B [auth A]	PHOSPHORYLATED DIHYDROPTEROATE C14 H13 N6 O6 P DNKVHXNVVYQUDC-UHFFFAOYSA-N
SO4	E [auth A]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L
MG	C [auth A], D [auth A]	MAGNESIUM ION Mg JLVVSXFLKOJNIY-UHFFFAOYSA-N

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
KCX	A	L-PEPTIDE LINKING	C7 H14 N2 O4		LYS

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.82 Å
• R-Value Free: 0.203 
• R-Value Work: 0.165 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 64.368	α = 90
b = 80.62	β = 90
c = 92.829	γ = 90

Software Package:

Software Name	Purpose
BUSTER	refinement
MOSFLM	data reduction
SCALA	data scaling
AMoRE	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2004-08-31 
• Released Date: 2005-02-09 
Deposition Author(s): Mathieu, M., Debousker, G., Vincent, S., Viviani, F., Bamas-Jacques, N., Mikol, V.

Revision History  

• 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