4F1S

Crystal structure of human PI3K-gamma in complex with a pyridyl-triazine-sulfonamide inhibitor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3 Å
  • R-Value Free: 0.265 
  • R-Value Work: 0.192 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Synthesis and structure-activity relationships of dual PI3K/mTOR inhibitors based on a 4-amino-6-methyl-1,3,5-triazine sulfonamide scaffold.

Wurz, R.P.Liu, L.Yang, K.Nishimura, N.Bo, Y.Pettus, L.H.Caenepeel, S.Freeman, D.J.McCarter, J.D.Mullady, E.L.Miguel, T.S.Wang, L.Zhang, N.Andrews, K.L.Whittington, D.A.Jiang, J.Subramanian, R.Hughes, P.E.Norman, M.H.

(2012) Bioorg.Med.Chem.Lett. 22: 5714-5720

  • DOI: 10.1016/j.bmcl.2012.06.078

  • PubMed Abstract: 
  • Phosphoinositide 3-kinase (PI3K) is an important target in oncology due to the deregulation of the PI3K/Akt signaling pathway in a wide variety of tumors. A series of 4-amino-6-methyl-1,3,5-triazine sulfonamides were synthesized and evaluated as inhi ...

    Phosphoinositide 3-kinase (PI3K) is an important target in oncology due to the deregulation of the PI3K/Akt signaling pathway in a wide variety of tumors. A series of 4-amino-6-methyl-1,3,5-triazine sulfonamides were synthesized and evaluated as inhibitors of PI3K. The synthesis, in vitro biological activities, pharmacokinetic and in vivo pharmacodynamic profiling of these compounds are described. The most promising compound from this investigation (compound 3j) was found to be a pan class I PI3K inhibitor with a moderate (>10-fold) selectivity over the mammalian target of rapamycin (mTOR) in the enzyme assay. In a U87 MG cellular assay measuring phosphorylation of Akt, compound 3j displayed low double digit nanomolar IC(50) and exhibited good oral bioavailability in rats (F(oral)=63%). Compound 3j also showed a dose dependent reduction in the phosphorylation of Akt in a U87 tumor pharmacodynamic model with a plasma EC(50)=193 nM (91 ng/mL).


    Organizational Affiliation

    Department of Chemistry Research & Discovery, Amgen Inc., One Amgen Center Drive, Thousand Oaks, CA 91320, USA. rwurz@amgen.com




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit gamma isoform
A
960Homo sapiensMutation(s): 0 
Gene Names: PIK3CG
EC: 2.7.1.153
Find proteins for P48736 (Homo sapiens)
Go to Gene View: PIK3CG
Go to UniProtKB:  P48736
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
F1S
Query on F1S

Download SDF File 
Download CCD File 
A
N-(5-{[3-(4-amino-6-methyl-1,3,5-triazin-2-yl)-5-(tetrahydro-2H-pyran-4-yl)pyridin-2-yl]amino}-2-chloropyridin-3-yl)methanesulfonamide
C20 H23 Cl N8 O3 S
FLBPZSHGOYHCPK-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
F1SKi: 2 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3 Å
  • R-Value Free: 0.265 
  • R-Value Work: 0.192 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 146.701α = 90.00
b = 69.079β = 94.87
c = 107.623γ = 90.00
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
REFMACphasing
REFMACrefinement
HKL-2000data reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-08-08
    Type: Initial release
  • Version 1.1: 2012-09-05
    Type: Database references