3RWQ

Discovery of a Novel, Potent and Selective Inhibitor of 3-Phosphoinositide Dependent Kinase (PDK1)

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.55 Å
  • R-Value Free: 0.256 
  • R-Value Work: 0.193 
  • R-Value Observed: 0.196 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history. 


Literature

Discovery of Novel, Potent, and Selective Inhibitors of 3-Phosphoinositide-Dependent Kinase (PDK1).

Murphy, S.T., Alton, G., Bailey, S., Baxi, S.M., Burke, B.J., Chappie, T.A., Ermolieff, J., Ferre, R., Greasley, S., Hickey, M., Humphrey, J., Kablaoui, N., Kath, J., Kazmirski, S., Kraus, M., Kupchinsky, S., Li, J., Lingardo, L., Marx, M.A., Richter, D., Tanis, S.P., Tran, K., Vernier, W., Xie, Z., Yin, M.J., Yu, X.H.

(2011) J Med Chem 54: 8490-8500

  • DOI: 10.1021/jm201019k
  • Primary Citation of Related Structures:  
    3RWP, 3RWQ

  • PubMed Abstract: 

    • Analogues substituted with various amines at the 6-position of the pyrazine ring on (4-amino-7-isopropyl-7H-pyrrolo[2,3-d]pyrimidin-5-yl)pyrazin-2-ylmethanone were discovered as potent and selective inhibitors of PDK1 with potential as anticancer age ...

    Analogues substituted with various amines at the 6-position of the pyrazine ring on (4-amino-7-isopropyl-7H-pyrrolo[2,3-d]pyrimidin-5-yl)pyrazin-2-ylmethanone were discovered as potent and selective inhibitors of PDK1 with potential as anticancer agents. An early lead with 2-pyridine-3-ylethylamine as the pyrazine substituent showed moderate potency and selectivity. Structure-based drug design led to improved potency and selectivity against PI3Kα through a combination of cyclizing the ethylene spacer into a saturated, five-membered ring and substituting on the 4-position of the aryl ring with a fluorine. ADME properties were improved by lowering the lipophilicity with heteroatom replacements in the saturated, five-membered ring. The optimized analogues have a PDK1 Ki of 1 nM and >100-fold selectivity against PI3K/AKT-pathway kinases. The cellular potency of these analogues was assessed by the inhibition of AKT phosphorylation (T308) and by their antiproliferation activity against a number of tumor cell lines.

    Organizational Affiliation: 

    Pfizer Global Research and Development, 10770 Science Center Drive, San Diego, California 92121, United States. sean.murphy@takedasd.com



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
3-phosphoinositide-dependent protein kinase 1A311Homo sapiensMutation(s): 0 
Gene Names: PDPK1, PDK1
EC: 2.7.11.1
Find proteins for O15530 (Homo sapiens)
Explore O15530 
Go to UniProtKB:  O15530
NIH Common Fund Data Resources
PHAROS  O15530
GTEx  ENSG00000140992
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
3RW
Query on 3RW
Download CCD File 
A
[4-amino-7-(propan-2-yl)-7H-pyrrolo[2,3-d]pyrimidin-5-yl](6-{[2-(pyridin-3-yl)ethyl]amino}pyrazin-2-yl)methanone
C21 H22 N8 O
WMUOCKJUZCEMCY-UHFFFAOYSA-N		 Ligand Interaction
SO4
Query on SO4
Download CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L		 Ligand Interaction
GOL
Query on GOL
Download CCD File 
A
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N		 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
SEP
Query on SEP		AL-PEPTIDE LINKINGC3 H8 N O6 PSER
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
3RWKi :  35   nM  PDBBind
3RWKi:  35   nM  BindingDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.55 Å
  • R-Value Free: 0.256 
  • R-Value Work: 0.193 
  • R-Value Observed: 0.196 
  • Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 123.213α = 90
b = 123.213β = 90
c = 47.424γ = 120
Software Package:
Software NamePurpose
HKL-2000data collection
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling
REFMACphasing

Structure Validation

View Full Validation Report


View more in-depth experimental data

Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-11-16
    Type: Initial release
  • Version 1.1: 2011-12-28
    Changes: Database references