1E2I

The nucleoside binding site of Herpes simplex type 1 thymidine kinase analyzed by X-ray crystallography


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.273 
  • R-Value Work: 0.222 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Nucleoside Binding Site of Herpes Simplex Type 1 Thymidine Kinase Analyzed by X-Ray Crystallography

Vogt, J.Perozzo, R.Pautsch, A.Prota, A.Schelling, P.Pilger, B.Folkers, G.Scapozza, L.Schulz, G.E.

(2000) Proteins 41: 545

  • Primary Citation of Related Structures:  
  • Also Cited By: 3RDP, 3F0T

  • PubMed Abstract: 
  • The crystal structures of the full-length Herpes simplex virus type 1 thymidine kinase in its unligated form and in a complex with an adenine analogue have been determined at 1.9 A resolution. The unligated enzyme contains four water molecules in the ...

    The crystal structures of the full-length Herpes simplex virus type 1 thymidine kinase in its unligated form and in a complex with an adenine analogue have been determined at 1.9 A resolution. The unligated enzyme contains four water molecules in the thymidine pocket and reveals a small induced fit on substrate binding. The structure of the ligated enzyme shows for the first time a bound adenine analogue after numerous complexes with thymine and guanine analogues have been reported. The adenine analogue constitutes a new lead compound for enzyme-prodrug gene therapy. In addition, the structure of mutant Q125N modifying the binding site of the natural substrate thymidine in complex with this substrate has been established at 2.5 A resolution. It reveals that neither the binding mode of thymidine nor the polypeptide backbone conformation is altered, except that the two major hydrogen bonds to thymidine are replaced by a single water-mediated hydrogen bond, which improves the relative acceptance of the prodrugs aciclovir and ganciclovir compared with the natural substrate. Accordingly, the mutant structure represents a first step toward improving the virus-directed enzyme-prodrug gene therapy by enzyme engineering.


    Related Citations: 
    • The Three-Dimensional Structure of Thymidine Kinase from Herpes Simplex Virus Type 1
      Wild, K.,Bohner, T.,Aubry, A.,Folkers, G.,Schulz, G.E.
      (1995) FEBS Lett. 368: 289
    • Crystal Structures of the Thymidine Kinase from Herpes Simplex Virus Type-1 in Complex with Deoxythymidine and Ganciclovir
      Brown, D.G.,Visse, R.,Sandhu, G.,Davies, A.,Rizkallah, P.J.,Melitz, C.,Summers, W.C.,Sanderson, M.R.
      (1995) Nat.Struct.Mol.Biol. 2: 876


    Organizational Affiliation

    Institut für Organische Chemie und Biochemie, Albert-Ludwigs-Universität, Freiburg im Breisgau, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
THYMIDINE KINASE
A, B
331Human herpesvirus 1 (strain 17)Mutation(s): 0 
Gene Names: TK
EC: 2.7.1.21
Find proteins for P03176 (Human herpesvirus 1 (strain 17))
Go to UniProtKB:  P03176
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ARP
Query on ARP

Download SDF File 
Download CCD File 
A, B
9-HYDROXYPROPYLADENINE, R-ISOMER
C8 H11 N5 O
MJZYTEBKXLVLMY-RXMQYKEDSA-N
 Ligand Interaction
SO4
Query on SO4

Download SDF File 
Download CCD File 
A, B
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
APS
Query on APS

Download SDF File 
Download CCD File 
A, B
9-HYDROXYPROPYLADENINE, S-ISOMER
C8 H11 N5 O
MJZYTEBKXLVLMY-YFKPBYRVSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.273 
  • R-Value Work: 0.222 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 113.000α = 90.00
b = 116.900β = 90.00
c = 108.000γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
MOSFLMdata reduction
AMoREphasing
SCALAdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2000-11-06
    Type: Initial release
  • Version 1.1: 2011-05-08
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance