ISDA: 1QXO

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(s):

Streptococcus pneumoniae (Taxon ID: 1313)

Expression System(s):

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

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Macromolecular Entities

Structures with similar UniProt ID

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

Maclean, J, Ali, S.Show

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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Protein

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Primary Citation of related structures

Abstact

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