1QXO image
Deposition Date 2003-09-08
Release Date 2003-12-23
Last Version Date 2024-10-30
Entry Detail
PDB ID:
1QXO
Keywords:
LYASE
Title:
Crystal structure of Chorismate synthase complexed with oxidized FMN and EPSP
Biological Source:
Source Organism:
Streptococcus pneumoniae (Taxon ID: 1313)
Host Organism:
Escherichia coli
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
2.00 Å
R-Value Free:
0.22
R-Value Work:
0.15
R-Value Observed:
0.16
Space Group:
P 1 21 1
1QXO validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Chorismate synthase
Gene (Uniprot):aroC
Chain IDs:A, B, C, D
Chain Length:388
Number of Molecules:4
Biological Source:Streptococcus pneumoniae
UniProt ID:P0A2Y6 Pfam ID:PF01264 EC:4.2.3.5
Modified Residue
Compound ID Chain ID Parent Comp ID Details 2D Image
MSE A MET SELENOMETHIONINE
Ligand Molecules
EDO
EPS
FMN
NCO
Primary Citation
The structure of chorismate synthase reveals a novel flavin binding site fundamental to a unique chemical reaction
Structure 11 1499 1511 (2003)
PMID: 14656434 DOI: 10.1016/j.str.2003.11.005

Abstact

The crystal structure of chorismate synthase (CS) from Streptococcus pneumoniae has been solved to 2.0 A resolution in the presence of flavin mononucleotide (FMN) and the substrate 5-enolpyruvyl-3-shikimate phosphate (EPSP). CS catalyses the final step of the shikimate pathway and is a potential therapeutic target for the rational design of novel antibacterials, antifungals, antiprotozoals, and herbicides. CS is a tetramer with the monomer possessing a novel beta-alpha-beta fold. The interactions between the enzyme, cofactor, and substrate reveal the structural reasons underlying the unique catalytic mechanism and identify the amino acids involved. This structure provides the essential initial information necessary for the generation of novel anti-infective compounds by a structure-guided medicinal chemistry approach.

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Disease

Primary Citation of related structures
1QXO