1NN3

Crystal structure of human thymidylate kinase with d4TMP + ADP

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.55 Å
  • R-Value Free: 0.225 
  • R-Value Work: 0.185 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history. 


Literature

Structures of human thymidylate kinase in complex with prodrugs: implications for the structure-based design of novel compounds

Ostermann, N., Segura-Pena, D., Meier, C., Veit, T., Monnerjahn, M., Konrad, M., Lavie, A.

(2003) Biochemistry 42: 2568-2577

  • DOI: 10.1021/bi027302t
  • Primary Citation of Related Structures:  
    1NN0, 1NN5, 1NN3, 1NN1, 1NMZ, 1NMY, 1NMX

  • PubMed Abstract: 

    • Nucleoside analogue prodrugs are dependent on efficient intracellular stepwise phosphorylation to their triphosphate form to become therapeutically active. In many cases it is this activation pathway that largely determines the efficacy of the drug. ...

    Nucleoside analogue prodrugs are dependent on efficient intracellular stepwise phosphorylation to their triphosphate form to become therapeutically active. In many cases it is this activation pathway that largely determines the efficacy of the drug. To gain further understanding of the determinants for efficient conversion by the enzyme thymidylate kinase (TMPK) of clinically important thymidine monophosphate analogues to the corresponding diphosphates, we solved the crystal structures of the enzyme, with either ADP or the ATP analogue AppNHp at the phosphoryl donor site, in complex with TMP, AZTMP (previous work), NH2TMP, d4TMP, ddTMP, and FLTMP (this work) at the phosphoryl acceptor site. In conjunction with steady-state kinetic data, our structures shed light on the effect of 3'-substitutions in the nucleoside monophosphate (NMP) sugar moiety on the catalytic rate. We observe a direct correlation between the rate of phosphorylation of an NMP and its ability to induce a closing of the enzyme's phosphate-binding loop (P-loop). Our results show the drastic effects that slight modifications of the substrates exert on the enzyme's conformation and, hence, activity and suggest the type of substitutions that are compatible with efficient phosphorylation by TMPK.

    Organizational Affiliation: 

    Department of Physical Biochemistry, Max Planck Institute for Molecular Physiology, Otto-Hahn-Strasse 11, 44227 Dortmund, Germany.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
similar to THYMIDYLATE KINASE (DTMP KINASE)A215Homo sapiensMutation(s): 1 
Gene Names: DTYMK, CDC8, TMPK, TYMK
EC: 2.7.4.9
Find proteins for P23919 (Homo sapiens)
Explore P23919 
Go to UniProtKB:  P23919
NIH Common Fund Data Resources
PHAROS  P23919
GTEx  ENSG00000168393
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ADP
Query on ADP
Download CCD File 
A
ADENOSINE-5'-DIPHOSPHATE
C10 H15 N5 O10 P2
XTWYTFMLZFPYCI-KQYNXXCUSA-N		 Ligand Interaction
2DT
Query on 2DT
Download CCD File 
A
3'-DEOXYTHYMIDINE-5'-MONOPHOSPHATE
C10 H15 N2 O7 P
WVNRRNJFRREKAR-JGVFFNPUSA-N		 Ligand Interaction
MG
Query on MG
Download CCD File 
A
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.55 Å
  • R-Value Free: 0.225 
  • R-Value Work: 0.185 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 101.004α = 90
b = 101.004β = 90
c = 49.84γ = 90
Software Package:
Software NamePurpose
MAR345data collection
XDSdata reduction
REFMACrefinement
XDSdata scaling

Structure Validation

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View more in-depth experimental data

Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-03-18
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Derived calculations, Version format compliance
  • Version 1.3: 2017-10-11
    Changes: Refinement description