4JEP

Crystal structure of Toxoplasma gondii nucleoside triphosphate diphosphohydrolase 1 (NTPDase1)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.1 Å
  • R-Value Free: 0.305 
  • R-Value Work: 0.270 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

The crystal structure of Toxoplasma gondii nucleoside triphosphate diphosphohydrolase 1 represents a conformational intermediate in the reductive activation mechanism of the tetrameric enzyme.

Krug, U.Totzauer, R.Strater, N.

(2013) Proteins 81: 1271-1276

  • DOI: 10.1002/prot.24288

  • PubMed Abstract: 
  • Toxoplasma gondii nucleoside triphosphate diphosphohydrolase (NTPDase) 1 was crystallized in an intermediate tetrameric conformation. The crystal structure is similar to that of T. gondii NTPDase3 and represents an inactive conformation as the activa ...

    Toxoplasma gondii nucleoside triphosphate diphosphohydrolase (NTPDase) 1 was crystallized in an intermediate tetrameric conformation. The crystal structure is similar to that of T. gondii NTPDase3 and represents an inactive conformation as the activating disulfide bridge is not reduced and the active site cleft between the two domains of each monomer is open. However, the arrangement of the monomers within the tetramer differs from that of the inactive form of NTPDase3 and may represent an intermediate conformation on the path of the closure motion of the tetramer induced upon activation.


    Organizational Affiliation

    Institute of Bioanalytical Chemistry, Faculty of Chemistry and Mineralogy, Center for Biotechnology and Biomedicine, University of Leipzig, 04103 Leipzig, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Nucleoside-triphosphatase 2
A, B
611Toxoplasma gondiiMutation(s): 0 
Gene Names: NTP1
EC: 3.6.1.15
Find proteins for Q27895 (Toxoplasma gondii)
Go to UniProtKB:  Q27895
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.1 Å
  • R-Value Free: 0.305 
  • R-Value Work: 0.270 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 72.743α = 90.00
b = 161.517β = 90.00
c = 236.937γ = 90.00
Software Package:
Software NamePurpose
SCALAdata scaling
MAR345data collection
BUSTERrefinement
MOLREPphasing
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-04-10
    Type: Initial release
  • Version 1.1: 2013-07-10
    Type: Database references
  • Version 1.2: 2013-12-25
    Type: Structure summary
  • Version 1.3: 2017-11-15
    Type: Refinement description