3HRF

Crystal structure of Human PDK1 kinase domain in complex with an allosteric activator bound to the PIF-pocket


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.177 
  • R-Value Work: 0.165 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure and allosteric effects of low-molecular-weight activators on the protein kinase PDK1.

Hindie, V.Stroba, A.Zhang, H.Lopez-Garcia, L.A.Idrissova, L.Zeuzem, S.Hirschberg, D.Schaeffer, F.Jrgensen, T.J.Engel, M.Alzari, P.M.Biondi, R.M.

(2009) Nat.Chem.Biol. 5: 758-764

  • DOI: 10.1038/nchembio.208
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Protein phosphorylation transduces a large set of intracellular signals. One mechanism by which phosphorylation mediates signal transduction is by prompting conformational changes in the target protein or interacting proteins. Previous work described ...

    Protein phosphorylation transduces a large set of intracellular signals. One mechanism by which phosphorylation mediates signal transduction is by prompting conformational changes in the target protein or interacting proteins. Previous work described an allosteric site mediating phosphorylation-dependent activation of AGC kinases. The AGC kinase PDK1 is activated by the docking of a phosphorylated motif from substrates. Here we present the crystallography of PDK1 bound to a rationally developed low-molecular-weight activator and describe the conformational changes induced by small compounds in the crystal and in solution using a fluorescence-based assay and deuterium exchange experiments. Our results indicate that the binding of the compound produces local changes at the target site, the PIF binding pocket, and also allosteric changes at the ATP binding site and the activation loop. Altogether, we present molecular details of the allosteric changes induced by small compounds that trigger the activation of PDK1 through mimicry of phosphorylation-dependent conformational changes.


    Related Citations: 
    • 3,5-diphenyl pent-2-enoic acids as allosteric activators of the protein kinase PDK1: Structure-activity relationships and thermodynamic characterisation of binding as a paradigm for PIF-binding pocket-targeting compounds
      Stroba, A.,Schaeffer, F.,Hindie, V.,Lopez-Garcia, L.A.,Frohner, W.,Adrian, I.,Hartmann, R.W.,Biondi, R.M.,Engel, M.
      () TO BE PUBLISHED --: --


    Organizational Affiliation

    Research Group PhosphoSites, Department of Internal Medicine I, Universitätsklinikum Frankfurt, Frankfurt, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
3-phosphoinositide-dependent protein kinase 1
A
311Homo sapiensMutation(s): 2 
Gene Names: PDPK1 (PDK1)
EC: 2.7.11.1
Find proteins for O15530 (Homo sapiens)
Go to Gene View: PDPK1
Go to UniProtKB:  O15530
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ATP
Query on ATP

Download SDF File 
Download CCD File 
A
ADENOSINE-5'-TRIPHOSPHATE
C10 H16 N5 O13 P3
ZKHQWZAMYRWXGA-KQYNXXCUSA-N
 Ligand Interaction
EPE
Query on EPE

Download SDF File 
Download CCD File 
A
4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID
HEPES
C8 H18 N2 O4 S
JKMHFZQWWAIEOD-UHFFFAOYSA-N
 Ligand Interaction
P47
Query on P47

Download SDF File 
Download CCD File 
A
(2Z)-5-(4-chlorophenyl)-3-phenylpent-2-enoic acid
C17 H15 Cl O2
LLJYFDRQFPQGNY-QINSGFPZSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
SEP
Query on SEP
A
L-PEPTIDE LINKINGC3 H8 N O6 PSER
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
P47Kd: 10300 nM (99) BINDINGDB
P47IC50: 97000 nM (99) BINDINGDB
P47Kd: 10300 nM BINDINGMOAD
P47Kd: 10300 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.177 
  • R-Value Work: 0.165 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 148.550α = 90.00
b = 44.000β = 100.42
c = 47.240γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata scaling
PHASERphasing
XDSdata reduction
PDB_EXTRACTdata extraction
SCALAdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-09-15
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Advisory, Refinement description, Version format compliance
  • Version 1.2: 2013-11-13
    Type: Database references