3QCS

Phosphoinositide-Dependent Kinase-1 (PDK1) kinase domain with 6-[2-Amino-6-(4-morpholinyl)-4-pyrimidinyl]-1H-indazol-3-amine


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.49 Å
  • R-Value Free: 
    0.251 (Depositor), 0.244 (DCC) 
  • R-Value Work: 
    0.174 (Depositor), 0.167 (DCC) 
  • R-Value Observed: 
    0.182 (Depositor) 

wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 

Created with Raphaël 2.3.0Worse 01 BetterLigand structure goodness of fit to experimental dataBest fitted 3Q1Click on this verticalbar to view details

This is version 1.3 of the entry. See complete history


Literature

Structure-Based Design of Potent and Selective 3-Phosphoinositide-Dependent Kinase-1 (PDK1) Inhibitors.

Medina, J.R.Becker, C.J.Blackledge, C.W.Duquenne, C.Feng, Y.Grant, S.W.Heerding, D.Li, W.H.Miller, W.H.Romeril, S.P.Scherzer, D.Shu, A.Bobko, M.A.Chadderton, A.R.Dumble, M.Gardiner, C.M.Gilbert, S.Liu, Q.Rabindran, S.K.Sudakin, V.Xiang, H.Brady, P.G.Campobasso, N.Ward, P.Axten, J.M.

(2011) J Med Chem 54: 1871-1895

  • DOI: https://doi.org/10.1021/jm101527u
  • Primary Citation of Related Structures:  
    3QCQ, 3QCS, 3QCX, 3QCY, 3QD0, 3QD3, 3QD4

  • PubMed Abstract: 

    Phosphoinositide-dependent protein kinase-1(PDK1) is a master regulator of the AGC family of kinases and an integral component of the PI3K/AKT/mTOR pathway. As this pathway is among the most commonly deregulated across all cancers, a selective inhibitor of PDK1 might have utility as an anticancer agent. Herein we describe our lead optimization of compound 1 toward highly potent and selective PDK1 inhibitors via a structure-based design strategy. The most potent and selective inhibitors demonstrated submicromolar activity as measured by inhibition of phosphorylation of PDK1 substrates as well as antiproliferative activity against a subset of AML cell lines. In addition, reduction of phosphorylation of PDK1 substrates was demonstrated in vivo in mice bearing OCl-AML2 xenografts. These observations demonstrate the utility of these molecules as tools to further delineate the biology of PDK1 and the potential pharmacological uses of a PDK1 inhibitor.


  • Organizational Affiliation

    Oncology Research, GlaxoSmithKline, Collegeville, Pennsylvania 19426, United States. jesus.r.medina@gsk.com


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
3-phosphoinositide-dependent protein kinase 1312Homo sapiensMutation(s): 0 
Gene Names: PDPK1
EC: 2.7.11.1
UniProt & NIH Common Fund Data Resources
Find proteins for O15530 (Homo sapiens)
Explore O15530 
Go to UniProtKB:  O15530
PHAROS:  O15530
GTEx:  ENSG00000140992 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO15530
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
3Q1
Query on 3Q1

Download Ideal Coordinates CCD File 
I [auth A]6-[2-amino-6-(morpholin-4-yl)pyrimidin-4-yl]-2H-indazol-3-amine
C15 H17 N7 O
IBSXLFOFZRSWEZ-UHFFFAOYSA-N
SO4
Query on SO4

Download Ideal Coordinates CCD File 
F [auth A],
G [auth A],
H [auth A],
J [auth A],
K [auth A]
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
GOL
Query on GOL

Download Ideal Coordinates CCD File 
B [auth A],
C [auth A],
D [auth A],
E [auth A]
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
Modified Residues  1 Unique
IDChains TypeFormula2D DiagramParent
SEP
Query on SEP
A
L-PEPTIDE LINKINGC3 H8 N O6 PSER
Binding Affinity Annotations 
IDSourceBinding Affinity
3Q1 BindingDB:  3QCS IC50: 316 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.49 Å
  • R-Value Free:  0.251 (Depositor), 0.244 (DCC) 
  • R-Value Work:  0.174 (Depositor), 0.167 (DCC) 
  • R-Value Observed: 0.182 (Depositor) 
Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 123.848α = 90
b = 123.848β = 90
c = 47.034γ = 120
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
PHENIXrefinement
PDB_EXTRACTdata extraction
MAR345dtbdata collection

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment 

Created with Raphaël 2.3.0Worse 01 BetterLigand structure goodness of fit to experimental dataBest fitted 3Q1Click on this verticalbar to view details

Entry History 

Revision History  (Full details and data files)

  • Version 1.0: 2011-03-09
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2017-11-08
    Changes: Refinement description
  • Version 1.3: 2024-11-06
    Changes: Data collection, Database references, Derived calculations, Structure summary