2PMN

Crystal structure of PfPK7 in complex with an ATP-site inhibitor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.296 
  • R-Value Work: 0.219 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structures of P. falciparum protein kinase 7 identify an activation motif and leads for inhibitor design.

Merckx, A.Echalier, A.Langford, K.Sicard, A.Langsley, G.Joore, J.Doerig, C.Noble, M.Endicott, J.

(2008) Structure 16: 228-238

  • DOI: 10.1016/j.str.2007.11.014
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Malaria is a major threat to world health. The identification of parasite targets for drug development is a priority and parasitic protein kinases suggest themselves as suitable targets as many display profound structural and functional divergences f ...

    Malaria is a major threat to world health. The identification of parasite targets for drug development is a priority and parasitic protein kinases suggest themselves as suitable targets as many display profound structural and functional divergences from their host counterparts. In this paper, we describe the structure of the orphan protein kinase, Plasmodium falciparum protein kinase 7 (PFPK7). Several Plasmodium protein kinases contain extensive insertions, and the structure of PFPK7 reveals how these may be accommodated as excursions from the canonical eukaryotic protein kinase fold. The constitutively active conformation of PFPK7 is stabilized by a structural motif in which the role of the conserved phosphorylated residue that assists in structuring the activation loop of many protein kinases is played by an arginine residue. We identify two series of PFPK7 ATP-competitive inhibitors and suggest further developments for the design of selective and potent PFPK7 lead compounds as potential antimalarials.


    Organizational Affiliation

    The Laboratory of Molecular Biophysics, Department of Biochemistry, University of Oxford, South Parks Road, Oxford OX1 3QU, United Kingdom.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Ser/Thr protein kinase, putative
X
348Plasmodium falciparumMutation(s): 0 
EC: 2.7.11.1
Find proteins for Q7YTF7 (Plasmodium falciparum)
Go to UniProtKB:  Q7YTF7
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
K51
Query on K51

Download SDF File 
Download CCD File 
X
4-(6-{[(1S)-1-(HYDROXYMETHYL)-2-METHYLPROPYL]AMINO}IMIDAZO[1,2-B]PYRIDAZIN-3-YL)BENZONITRILE
C18 H19 N5 O
CQZVJEKKNHOFNB-OAHLLOKOSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
K51IC50: 280 nM (100) BINDINGDB
K51IC50: 6300 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.296 
  • R-Value Work: 0.219 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 73.406α = 90.00
b = 82.084β = 90.00
c = 138.962γ = 90.00
Software Package:
Software NamePurpose
SCALAdata scaling
MOSFLMdata reduction
MOLREPphasing
REFMACrefinement
DNAdata collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-01-22
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Advisory, Version format compliance