1E7U

Structure determinants of phosphoinositide 3-kinase inhibition by wortmannin, LY294002, quercetin, myricetin and staurosporine


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.298 
  • R-Value Work: 0.254 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural Determinations of Phosphoinositide 3-Kinase Inhibition by Wortmannin, Ly294002, Quercetin, Myricetin and Staurosporine

Walker, E.H.Pacold, M.E.Perisic, O.Stephens, L.Hawkins, P.T.Whymann, M.P.Williams, R.L.

(2000) Mol.Cell 6: 909

  • Primary Citation of Related Structures:  1E7V, 1E8W, 1E8X, 1E8Y, 1E8Z, 1E90

  • PubMed Abstract: 
  • The specific phosphoinositide 3-kinase (PI3K) inhibitors wortmannin and LY294002 have been invaluable tools for elucidating the roles of these enzymes in signal transduction pathways. The X-ray crystallographic structures of PI3Kgamma bound to these ...

    The specific phosphoinositide 3-kinase (PI3K) inhibitors wortmannin and LY294002 have been invaluable tools for elucidating the roles of these enzymes in signal transduction pathways. The X-ray crystallographic structures of PI3Kgamma bound to these lipid kinase inhibitors and to the broad-spectrum protein kinase inhibitors quercetin, myricetin, and staurosporine reveal how these compounds fit into the ATP binding pocket. With a nanomolar IC50, wortmannin most closely fits and fills the active site and induces a conformational change in the catalytic domain. Surprisingly, LY294002 and the lead compound on which it was designed, quercetin, as well as the closely related flavonoid myricetin bind PI3K in remarkably different orientations that are related to each other by 180 degrees rotations. Staurosporine/PI3K interactions are reminiscent of low-affinity protein kinase/staurosporine complexes. These results provide a rich basis for development of isoform-specific PI3K inhibitors with therapeutic potential.


    Related Citations: 
    • Structural Insights Into Phosphoinositide 3-Kinase Catalysis and Signalling
      Walker, E.H.,Perisic, O.,Ried, C.,Stephens, L.,Williams, R.L.
      (1999) Nature 402: 313


    Organizational Affiliation

    MRC Laboratory of Molecular Biology, MRC Centre, Cambridge, United Kingdom.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PHOSPHATIDYLINOSITOL 3-KINASE CATALYTIC SUBUNIT
A
961Sus scrofaGene Names: PIK3CG
EC: 2.7.11.1, 2.7.1.153
Find proteins for O02697 (Sus scrofa)
Go to Gene View: PIK3CG
Go to UniProtKB:  O02697
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
KWT
Query on KWT

Download SDF File 
Download CCD File 
A
(1S,6BR,9AS,11R,11BR)-9A,11B-DIMETHYL-1-[(METHYLOXY)METHYL]-3,6,9-TRIOXO-1,6,6B,7,8,9,9A,10,11,11B-DECAHYDRO-3H-FURO[4,3,2-DE]INDENO[4,5-H][2]BENZOPYRAN-11-YL ACETATE
[1S-(1A,6BA,9AB,11A,11BB)]-11-(ACETYLOXY)-1,6B,7,8,9A,10,11,11B-OCTAHYDRO-1-(METHOXYMETHLY) -9A,11B-DIMETHYL-3H-FURO[4,3,2-DE]INDENL[4,5-H]-2-BENZOPYRAN-3,6,9,TRIONE; WORTMANNIN
C23 H24 O8
QDLHCMPXEPAAMD-QAIWCSMKSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
KWTIC50: 5 - 89 nM (95) BINDINGDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.298 
  • R-Value Work: 0.254 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 145.327α = 90.00
b = 67.664β = 95.05
c = 106.650γ = 90.00
Software Package:
Software NamePurpose
SCALAdata scaling
MOSFLMdata reduction
CNSphasing
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2000-11-17
    Type: Initial release
  • Version 1.1: 2011-05-08
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance