5KCV

Crystal structure of allosteric inhibitor, ARQ 092, in complex with autoinhibited form of AKT1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.269 
  • R-Value Work: 0.210 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Discovery of 3-(3-(4-(1-Aminocyclobutyl)phenyl)-5-phenyl-3H-imidazo[4,5-b]pyridin-2-yl)pyridin-2-amine (ARQ 092): An Orally Bioavailable, Selective, and Potent Allosteric AKT Inhibitor.

Lapierre, J.M.Eathiraj, S.Vensel, D.Liu, Y.Bull, C.O.Cornell-Kennon, S.Iimura, S.Kelleher, E.W.Kizer, D.E.Koerner, S.Makhija, S.Matsuda, A.Moussa, M.Namdev, N.Savage, R.E.Szwaya, J.Volckova, E.Westlund, N.Wu, H.Schwartz, B.

(2016) J.Med.Chem. 59: 6455-6469

  • DOI: 10.1021/acs.jmedchem.6b00619

  • PubMed Abstract: 
  • The work in this paper describes the optimization of the 3-(3-phenyl-3H-imidazo[4,5-b]pyridin-2-yl)pyridin-2-amine chemical series as potent, selective allosteric inhibitors of AKT kinases, leading to the discovery of ARQ 092 (21a). The cocrystal str ...

    The work in this paper describes the optimization of the 3-(3-phenyl-3H-imidazo[4,5-b]pyridin-2-yl)pyridin-2-amine chemical series as potent, selective allosteric inhibitors of AKT kinases, leading to the discovery of ARQ 092 (21a). The cocrystal structure of compound 21a bound to full-length AKT1 confirmed the allosteric mode of inhibition of this chemical class and the role of the cyclobutylamine moiety. Compound 21a demonstrated high enzymatic potency against AKT1, AKT2, and AKT3, as well as potent cellular inhibition of AKT activation and the phosphorylation of the downstream target PRAS40. Compound 21a also served as a potent inhibitor of the AKT1-E17K mutant protein and inhibited tumor growth in a human xenograft mouse model of endometrial adenocarcinoma.


    Organizational Affiliation

    ArQule Inc. , One Wall Street, Burlington, Massachusetts 01803, United States.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
RAC-alpha serine/threonine-protein kinase
A
460Homo sapiensMutation(s): 3 
Gene Names: AKT1 (PKB, RAC)
EC: 2.7.11.1
Find proteins for P31749 (Homo sapiens)
Go to Gene View: AKT1
Go to UniProtKB:  P31749
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
6S1
Query on 6S1

Download SDF File 
Download CCD File 
A
3-[3-[4-(1-azanylcyclobutyl)phenyl]-5-phenyl-imidazo[4,5-b]pyridin-2-yl]pyridin-2-amine
C27 H24 N6
HNFMVVHMKGFCMB-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.269 
  • R-Value Work: 0.210 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 44.720α = 90.00
b = 87.620β = 90.00
c = 128.790γ = 90.00
Software Package:
Software NamePurpose
MOLREPphasing
MOSFLMdata reduction
SCALAdata scaling
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2016-06-07 
  • Released Date: 2016-06-29 
  • Deposition Author(s): Eathiraj, S.

Revision History 

  • Version 1.0: 2016-06-29
    Type: Initial release
  • Version 1.1: 2016-07-27
    Type: Database references