3NVA

Dimeric form of CTP synthase from Sulfolobus solfataricus

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.282 
  • R-Value Work: 0.207 
  • R-Value Observed: 0.210 

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This is version 1.4 of the entry. See complete history. 


Literature

Structure of the dimeric form of CTP synthase from Sulfolobus solfataricus

Lauritsen, I., Willemoes, M., Jensen, K.F., Johansson, E., Harris, P.

(2011) Acta Crystallogr Sect F Struct Biol Cryst Commun 67: 201-208

  • DOI: 10.1107/S1744309110052334
  • Primary Citation of Related Structures:  
    3NVA

  • PubMed Abstract: 

    • CTP synthase catalyzes the last committed step in de novo pyrimidine-nucleotide biosynthesis. Active CTP synthase is a tetrameric enzyme composed of a dimer of dimers. The tetramer is favoured in the presence of the substrate nucleotides ATP and UTP; when saturated with nucleotide, the tetramer completely dominates the oligomeric state of the enzyme ...

    CTP synthase catalyzes the last committed step in de novo pyrimidine-nucleotide biosynthesis. Active CTP synthase is a tetrameric enzyme composed of a dimer of dimers. The tetramer is favoured in the presence of the substrate nucleotides ATP and UTP; when saturated with nucleotide, the tetramer completely dominates the oligomeric state of the enzyme. Furthermore, phosphorylation has been shown to regulate the oligomeric states of the enzymes from yeast and human. The crystal structure of a dimeric form of CTP synthase from Sulfolobus solfataricus has been determined at 2.5 Å resolution. A comparison of the dimeric interface with the intermolecular interfaces in the tetrameric structures of Thermus thermophilus CTP synthase and Escherichia coli CTP synthase shows that the dimeric interfaces are almost identical in the three systems. Residues that are involved in the tetramerization of S. solfataricus CTP synthase according to a structural alignment with the E. coli enzyme all have large thermal parameters in the dimeric form. Furthermore, they are seen to undergo substantial movement upon tetramerization.

    Organizational Affiliation: 

    Department of Biology, University of Copenhagen, Copenhagen, Denmark.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
CTP synthaseA, B535Saccharolobus solfataricusMutation(s): 0 
Gene Names: pyrG, SSO0201
EC: 6.3.4.2
Find proteins for Q980S6 (Saccharolobus solfataricus (strain ATCC 35092 / DSM 1617 / JCM 11322 / P2))
Explore Q980S6 
Go to UniProtKB:  Q980S6
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.282 
  • R-Value Work: 0.207 
  • R-Value Observed: 0.210 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 43.45α = 100.99
b = 76.78β = 95.36
c = 98.87γ = 108.42
Software Package:
Software NamePurpose
XSCALEdata scaling
MOLREPphasing
PHENIXrefinement
PDB_EXTRACTdata extraction
MAR345dtbdata collection
XDSdata reduction

Structure Validation

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View more in-depth experimental data

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2010-09-08
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2012-04-25
    Changes: Database references
  • Version 1.3: 2014-11-12
    Changes: Structure summary
  • Version 1.4: 2018-05-23
    Changes: Advisory, Data collection