Biological Assembly 1  

 3D View: Structure | Electron Density

Global Symmetry: Dihedral - D3  (3D View)
Global Stoichiometry: Homo 6-mer - A6 

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

Macromolecule Content

• Total Structure Weight: 104.76 kDa 
• Atom Count: 8098 
• Modelled Residue Count: 933 
• Deposited Residue Count: 939 
• Unique protein chains: 1

2V78

Crystal structure of Sulfolobus solfataricus 2-keto-3-deoxygluconate kinase

• DOI: 10.2210/pdb2V78/pdb

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


• Deposited: 2007-07-27 Released: 2007-08-07 
• Deposition Author(s): Potter, J.A., Theodossis, A., Kerou, M., Lamble, H.J., Bull, S.D., Hough, D.W., Danson, M.J., Taylor, G.L.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.198 
• R-Value Work: 0.162 
• R-Value Observed: 0.164 

Literature

The Structure of Sulfolobus Solfataricus 2-Keto-3-Deoxygluconate Kinase.

Potter, J.A., Kerou, M., Lamble, H.J., Bull, S.D., Hough, D.W., Danson, M.J., Taylor, G.L.

(2008) Acta Crystallogr D Biol Crystallogr 64: 1283

• PubMed: 19018105 
• DOI: 10.1107/S0907444908036111
• Primary Citation of Related Structures:  
  2V78, 2VAR


• PubMed Abstract: 
  

The hyperthermophilic archaeon Sulfolobus solfataricus grows optimally above 353 K and utilizes an unusual promiscuous nonphosphorylative Entner-Doudoroff pathway to metabolize both glucose and galactose. It has been proposed that a part-phosphorylative Entner-Doudoroff pathway occurs in parallel in S. solfataricus, in which the 2-keto-3-deoxygluconate kinase (KDGK) is promiscuous for both glucose and galactose metabolism. Recombinant S. solfataricus KDGK protein was expressed in Escherichia coli, purified and crystallized in 0.1 M sodium acetate pH 4.1 and 1.4 M NaCl. The crystal structure of apo S. solfataricus KDGK was solved by molecular replacement to a resolution of 2.0 A and a ternary complex with 2-keto-3-deoxygluconate (KDGlu) and an ATP analogue was resolved at 2.1 A. The complex suggests that the structural basis for the enzyme's ability to phosphorylate KDGlu and 2-keto-3-deoxygalactonate (KDGal) is derived from a subtle repositioning of residues that are conserved in homologous nonpromiscuous kinases.

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Organizational Affiliation: 

Centre for Biomolecular Sciences, University of St Andrews, North Haugh, St Andrews, Fife KY16 9ST, Scotland.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
FRUCTOKINASE	A, B, C	313	Saccharolobus solfataricus	Mutation(s): 0  EC: 2.7.1.4 (PDB Primary Data), 2.7.1.178 (UniProt)
Find proteins for Q97U29 (Saccharolobus solfataricus (strain ATCC 35092 / DSM 1617 / JCM 11322 / P2)) Explore Q97U29  Go to UniProtKB:  Q97U29

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.198 
• R-Value Work: 0.162 
• R-Value Observed: 0.164 
• Space Group: P 6₅ 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 104.865	α = 90
b = 104.865	β = 90
c = 422.502	γ = 120

Software Package:

Software Name	Purpose
REFMAC	refinement

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2007-07-27 
• Released Date: 2007-08-07 
Deposition Author(s): Potter, J.A., Theodossis, A., Kerou, M., Lamble, H.J., Bull, S.D., Hough, D.W., Danson, M.J., Taylor, G.L.

Revision History  

• Version 1.0: 2007-08-07
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Advisory, Version format compliance