Biological Assembly 1  

Global Symmetry: Tetrahedral - T  (3D View)
Global Stoichiometry: Homo 12-mer - A12 

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

Macromolecule Content

• Total Structure Weight: 209.84 kDa 
• Atom Count: 16,147 
• Modelled Residue Count: 1,738 
• Deposited Residue Count: 1,848 
• Unique protein chains: 1

 1UQR

Type II 3-dehydroquinate dehydratase (DHQase) from Actinobacillus pleuropneumoniae

• PDB DOI:  https://doi.org/10.2210/pdb1UQR/pdb

• Classification: LYASE
• Organism(s): Actinobacillus pleuropneumoniae
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2003-10-16 Released: 2003-10-30 
• Deposition Author(s): Maes, D., Gonzalez-Ramirez, L.A., Lopez-Jaramillo, J., Yu, B., De Bondt, H., Zegers, I., Afonina, E., Garcia-Ruiz, J.M., Gulnik, S.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.70 Å
• R-Value Free: 0.199 
• R-Value Work: 0.178 
• R-Value Observed: 0.178 

Literature

Structural Study of the Type II 3-Dehydroquinate Dehydratase from Actinobacillus Pleuropneumoniae

Maes, D., Gonzalez-Ramirez, L.A., Lopez-Jaramillo, J., Yu, B., De Bondt, H., Zegers, I., Afonina, E., Garcia-Ruiz, J.M., Gulnik, S.

(2004) Acta Crystallogr D Biol Crystallogr 60: 463

• PubMed: 14993670 
• DOI: https://doi.org/10.1107/S090744490302969X
• Primary Citation of Related Structures:  
  1UQR


• PubMed Abstract: 
  

The structure of the type II dehydroquinate dehydratase (DHQase) from Actinobacillus pleuropneumoniae, the third enzyme of the shikimate pathway, has been determined. Crystals diffracting to 1.7 A were obtained in space and on earth using the counter-diffusion technique. The structure was solved using molecular replacement and refined to high resolution. The overall structure of the dodecameric enzyme is described and compared with structures of DHQases from other bacteria. DHQases contain a flexible loop that presumably closes over the active site upon substrate binding. The enzyme can exist in an open or closed conformation. The present structure displays the open conformation, with a sulfate anion bound in the active site. The availability of this structure opens a route to structure-based antibiotics targetting this pathogenic bacterium.

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Organizational Affiliation: 

ULTR, Vrije Universiteit Brussel, Vlaams Interuniversitair Instituut voor Biotechnologie (VIB), Pleinlaan 2, 1050 Brussels, Belgium. [e-mail]

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
3-DEHYDROQUINATE DEHYDRATASE	A, B, C, D, E, F, G, H, I, J, K, L	154	Actinobacillus pleuropneumoniae	Mutation(s): 0  Gene Names: aroQ EC: 4.2.1.10
UniProt
Find proteins for P43877 (Actinobacillus pleuropneumoniae) Explore P43877  Go to UniProtKB:  P43877

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
TRS	AA [auth E], KA [auth H], Q [auth B], SA [auth K]	2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL C4 H12 N O3 LENZDBCJOHFCAS-UHFFFAOYSA-O
SO4	BA [auth F], CA [auth F], DA [auth F], EA [auth F], FA [auth G], GA [auth H], HA [auth H], IA [auth H], JA [auth H], LA [auth I], M [auth A], MA [auth J], N [auth A], NA [auth J], O [auth B], OA [auth J], P [auth B], PA [auth K], QA [auth K], R [auth C], RA [auth K], S [auth C], T [auth C], TA [auth L], U [auth D], UA [auth L], V [auth D], W [auth D], X [auth E], Y [auth E], Z [auth E]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.70 Å
• R-Value Free: 0.199 
• R-Value Work: 0.178 
• R-Value Observed: 0.178 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 129.095	α = 90
b = 131.333	β = 90
c = 161.619	γ = 90

Software Package:

Software Name	Purpose
CNS	refinement
XDS	data reduction
XSCALE	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2003-10-30 
Deposition Author(s): Maes, D., Gonzalez-Ramirez, L.A., Lopez-Jaramillo, J., Yu, B., De Bondt, H., Zegers, I., Afonina, E., Garcia-Ruiz, J.M., Gulnik, S.

Revision History  

• Version 1.0: 2003-10-30
  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: 2019-07-24
  Changes: Data collection