1NDC

X-RAY STRUCTURE OF NUCLEOSIDE DIPHOSPHATE KINASE COMPLEXED WITH DTDP AND MG2+ AT 2 A RESOLUTION


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Work: 0.183 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

X-ray structure of nucleoside diphosphate kinase complexed with thymidine diphosphate and Mg2+ at 2-A resolution.

Cherfils, J.Morera, S.Lascu, I.Veron, M.Janin, J.

(1994) Biochemistry 33: 9062-9069


  • PubMed Abstract: 
  • We report the crystal structure of nucleoside diphosphate kinase (NDP kinase) from Dictyostelium discoideum with thymidine diphosphate (dTDP) and Mg2+ bound at the active site. The structure has been refined to an R-factor of 18.3% at 2-A resolution. ...

    We report the crystal structure of nucleoside diphosphate kinase (NDP kinase) from Dictyostelium discoideum with thymidine diphosphate (dTDP) and Mg2+ bound at the active site. The structure has been refined to an R-factor of 18.3% at 2-A resolution. The base stacks on the aromatic ring of Phe 64 near the protein surface and is wedged between the side chains of Phe 64 and Val 116. The sugar and the pyrophosphate are deeper inside the protein and make numerous H-bonds with protein side chains. There is no backbone interaction with the nucleotide. A Mg2+ ion bridges the alpha- and beta-phosphates and interacts with the protein via water molecules. NDP kinase shows little specificity toward ribonucleotides and deoxyribonucleotides. This property, required by the enzyme biological function, can now be analyzed by comparing the crystal structures of free, ADP-ligated, and dTDP-ligated enzymes. The most significant differences are located in residues 60-64, which adapt their conformation to allow Phe 64 to stack on both types of bases. Nonspecific binding is achieved by the absence of polar interaction between the base and protein atoms. The ribose of ADP and the deoxyribose of dTDP occupy similar positions, their hydroxyl groups interacting with Lys 16 and Asn 119. The H-bond between Lys 16 and the O2' hydroxyl of ADP is replaced by a similar interaction with a water molecule in the dTDP complex. The beta-phosphate position is the same for ADP and dTDP, suggesting that the mechanism of phosphate transfer is the same for all substrates ofNDP kinase.(ABSTRACT TRUNCATED AT 250 WORDS)


    Related Citations: 
    • Adp Binding and the Active Site of Nucleoside Diphosphate Kinase
      Morera, S.,Lascu, I.,Dumas, C.,Lebras, G.,Briozzo, P.,Veron, M.,Janin, J.
      (1994) Biochemistry 33: 459
    • X-Ray Structure of Nucleoside Diphosphate Kinase
      Dumas, C.,Lascu, I.,Morera, S.,Glaser, P.,Fourme, R.,Wallet, V.,Lacombe, M.L.,Veron, M.,Janin, J.
      (1992) Embo J. 11: 3203


    Organizational Affiliation

    Laboratoire de Biologie Structurale, UMR 9920 CNRS-Université Paris-Sud, Gif-sur-Yvette, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
NUCLEOSIDE DIPHOSPHATE KINASE
A
155Dictyostelium discoideumGene Names: ndkC-1, ndkC-2 (gip17, ndkB, gip17, ndkB)
EC: 2.7.4.6
Find proteins for P22887 (Dictyostelium discoideum)
Go to UniProtKB:  P22887
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
TYD
Query on TYD

Download SDF File 
Download CCD File 
A
THYMIDINE-5'-DIPHOSPHATE
C10 H16 N2 O11 P2
UJLXYODCHAELLY-XLPZGREQSA-N
 Ligand Interaction
MG
Query on MG

Download SDF File 
Download CCD File 
A
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Work: 0.183 
  • Space Group: H 3 2
Unit Cell:
Length (Å)Angle (°)
a = 79.800α = 90.00
b = 79.800β = 90.00
c = 160.600γ = 120.00
Software Package:
Software NamePurpose
X-PLORphasing
X-PLORrefinement
X-PLORmodel building

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1994-06-22
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Derived calculations, Version format compliance