Biological Assembly 1  

 3D View: Structure

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

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

Biological Assembly 2  

 3D View: Structure

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 2 assigned by authors and generated by PQS (software)

Macromolecule Content

• Total Structure Weight: 171.22 kDa 
• Atom Count: 11738 
• Residue Count: 1468 
• Unique protein chains: 1

1O7X

Citrate synthase from Sulfolobus solfataricus

• DOI: 10.2210/pdb1O7X/pdb

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


• Deposited: 2002-11-19 Released: 2002-12-12 
• Deposition Author(s): Bell, G.S., Russell, R.J.M., Connaris, H., Hough, D.W., Danson, M.J., Taylor, G.L.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.70 Å
• R-Value Free: 0.285 
• R-Value Work: 0.208 
• R-Value Observed: 0.208 

Literature

Stepwise Adaptations of Citrate Synthase to Survival at Life'S Extremes. From Psychrophile to Hyperthermophile.

Bell, G.S., Russell, R.J.M., Connaris, H., Hough, D.W., Danson, M.J., Taylor, G.L.

(2002) Eur J Biochem 269: 6250

• PubMed: 12473121 
• DOI: 10.1046/j.1432-1033.2002.03344.x
• Primary Citation of Related Structures:  
  1O7X


• PubMed Abstract: 
  

The crystal structure of citrate synthase from the thermophilic Archaeon Sulfolobus solfataricus (optimum growth temperature = 85 degrees C) has been determined, extending the number of crystal structures of citrate synthase from different organisms to a total of five that span the temperature range over which life exists (from psychrophile to hyperthermophile). Detailed structural analysis has revealed possible molecular mechanisms that determine the different stabilities of the five proteins. The key to these mechanisms is the precise structural location of the additional interactions. As one ascends the temperature ladder, the subunit interface of this dimeric enzyme and loop regions are reinforced by complex electrostatic interactions, and there is a reduced exposure of hydrophobic surface. These observations reveal a progressive pattern of stabilization through multiple additional interactions at solvent exposed, loop and interfacial regions.

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Organizational Affiliation: 

Centre for Extremophile Research, Department of Biology and Biochemistry, University of Bath, UK.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
CITRATE SYNTHASE	A, B, C, D	377	Saccharolobus solfataricus	Mutation(s): 0  EC: 4.1.3.7 (PDB Primary Data), 2.3.3.16 (UniProt)
Find proteins for P80148 (Saccharolobus solfataricus (strain ATCC 35092 / DSM 1617 / JCM 11322 / P2)) Explore P80148  Go to UniProtKB:  P80148

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.70 Å
• R-Value Free: 0.285 
• R-Value Work: 0.208 
• R-Value Observed: 0.208 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 77.34	α = 90
b = 97.86	β = 107.6
c = 119.33	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2002-11-19 
• Released Date: 2002-12-12 
Deposition Author(s): Bell, G.S., Russell, R.J.M., Connaris, H., Hough, D.W., Danson, M.J., Taylor, G.L.

Revision History 

• Version 1.0: 2002-12-12
  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: 2018-05-30
  Changes: Data collection