3OAW

4-Methylpteridineones as Orally Active and Selective PI3K/mTOR Dual Inhibitors

• PDB DOI: https://doi.org/10.2210/pdb3OAW/pdb

• Classification: TRANSFERASE/TRANSFERASE INHIBITOR
• Organism(s): Homo sapiens
• Expression System: Spodoptera frugiperda
• Mutation(s): No 


• Deposited: 2010-08-05 Released: 2010-09-22 
• Deposition Author(s): Knighton, D.R., Greasley, S.E., Rodgers, C.M.-L.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.75 Å
• R-Value Free: 0.268 
• R-Value Work: 0.207 
• R-Value Observed: 0.210 

Literature

4-methylpteridinones as orally active and selective PI3K/mTOR dual inhibitors.

Liu, K.K., Bagrodia, S., Bailey, S., Cheng, H., Chen, H., Gao, L., Greasley, S., Hoffman, J.E., Hu, Q., Johnson, T.O., Knighton, D., Liu, Z., Marx, M.A., Nambu, M.D., Ninkovic, S., Pascual, B., Rafidi, K., Rodgers, C.M., Smith, G.L., Sun, S., Wang, H., Yang, A., Yuan, J., Zou, A.

(2010) Bioorg Med Chem Lett 20: 6096-6099

• PubMed: 20817449 
• DOI: https://doi.org/10.1016/j.bmcl.2010.08.045
• Primary Citation of Related Structures:  
  3OAW


• PubMed Abstract: 
  

  Pteridinones were designed based on a non-selective kinase template. Because of the uniqueness of the PI3K and mTOR binding pockets, a methyl group was introduced to C-4 position of the peteridinone core to give compounds with excellent selectivity for PI3K and mTOR. This series of compounds were further optimized to improve their potency against PI3Kα and mTOR. Finally, orally active compounds with improved solubility and robust in vivo efficacy in tumor growth inhibition were identified as well.

---

Organizational Affiliation: 

Pfizer Global Research and Development, Chemistry Department, La Jolla, CA 92120, USA. [e-mail]

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 111.01 kDa 
• Atom Count: 6,804 
• Modelled Residue Count: 841 
• Deposited Residue Count: 966 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit gamma isoform	A	966	Homo sapiens	Mutation(s): 0  Gene Names: PIK3CG EC: 2.7.1.153 (PDB Primary Data), 2.7.1.137 (UniProt), 2.7.1.154 (UniProt), 2.7.11.1 (UniProt)
UniProt & NIH Common Fund Data Resources
Find proteins for P48736 (Homo sapiens) Explore P48736  Go to UniProtKB:  P48736
PHAROS:  P48736 GTEx:  ENSG00000105851

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
OAW	B [auth A]	2-amino-4-methyl-8-(1-methylethyl)-6-(1H-pyrazol-4-yl)pteridin-7(8H)-one C13 H15 N7 O YIFGKPFEGAUADP-UHFFFAOYSA-N

Binding Affinity Annotations
ID	Source	Binding Affinity
OAW	PDBBind:  3OAW	Ki: 7 (nM) from 1 assay(s)

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.75 Å
• R-Value Free: 0.268 
• R-Value Work: 0.207 
• R-Value Observed: 0.210 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 142.753	α = 90
b = 67.662	β = 95.83
c = 106.031	γ = 90

Software Package:

Software Name	Purpose
HKL-2000	data collection
BUSTER	refinement
HKL-2000	data reduction
HKL-2000	data scaling
BUSTER	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2010-09-22 
Deposition Author(s): Knighton, D.R., Greasley, S.E., Rodgers, C.M.-L.

Revision History  

• Version 1.0: 2010-09-22
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2024-02-21
  Changes: Data collection, Database references, Derived calculations