Biological Assembly 1  

Global Symmetry: Dihedral - D2  (3D View)
Global Stoichiometry: Homo 4-mer - A4 

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

Macromolecule Content

• Total Structure Weight: 202.25 kDa 
• Atom Count: 15,294 
• Modelled Residue Count: 1,778 
• Deposited Residue Count: 1,792 
• Unique protein chains: 1

 3JUR

The crystal structure of a hyperthermoactive Exopolygalacturonase from Thermotoga maritima

• PDB DOI:  https://doi.org/10.2210/pdb3JUR/pdb

• Classification: HYDROLASE
• Organism(s): Thermotoga maritima
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2009-09-15 Released: 2009-11-17 
• Deposition Author(s): Pijning, T., van Pouderoyen, G., Kluskens, L.D., van der Oost, J., Dijkstra, B.W.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.05 Å
• R-Value Free: 0.220 
• R-Value Work: 0.175 
• R-Value Observed: 0.177 

Literature

The crystal structure of a hyperthermoactive exopolygalacturonase from Thermotoga maritima reveals a unique tetramer

Pijning, T., van Pouderoyen, G., Kluskens, L., van der Oost, J., Dijkstra, B.W.

(2009) FEBS Lett 

• PubMed: 19854184 
• DOI: https://doi.org/10.1016/j.febslet.2009.10.047
• Primary Citation of Related Structures:  
  3JUR


• PubMed Abstract: 
  

The exopolygalacturonase from Thermotoga maritima is the most thermoactive and thermostable pectinase known to date. Here we present its crystal structure at 2.05A resolution. High structural homology around the active site allowed us to propose a model for substrate binding, explaining the exo-cleavage activity and specificity for non-methylated saturated galacturonate at the non-reducing end. Furthermore, the structure reveals unique features that contribute to the formation of stable tetramers in solution. Such an oligomerization has not been observed before for polygalacturonases.

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Organizational Affiliation: 

Laboratory of Biophysical Chemistry, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Exo-poly-alpha-D-galacturonosidase	A, B, C, D	448	Thermotoga maritima	Mutation(s): 0  Gene Names: TM0437 EC: 3.2.1.15
UniProt
Find proteins for Q9WYR8 (Thermotoga maritima (strain ATCC 43589 / DSM 3109 / JCM 10099 / NBRC 100826 / MSB8)) Explore Q9WYR8  Go to UniProtKB:  Q9WYR8

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.05 Å
• R-Value Free: 0.220 
• R-Value Work: 0.175 
• R-Value Observed: 0.177 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 63.274	α = 90
b = 155.904	β = 90
c = 200.652	γ = 90

Software Package:

Software Name	Purpose
PHASER	phasing
REFMAC	refinement
XDS	data reduction
SCALA	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2009-11-17 
Deposition Author(s): Pijning, T., van Pouderoyen, G., Kluskens, L.D., van der Oost, J., Dijkstra, B.W.

Revision History  

• Version 1.0: 2009-11-17
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Advisory, Version format compliance