4RCD

Crystal structure of BACE1 in complex with a 2-aminooxazoline 4-azaxanthene inhibitor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.251 
  • R-Value Work: 0.214 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Inhibitors of beta-Site Amyloid Precursor Protein Cleaving Enzyme (BACE1): Identification of (S)-7-(2-Fluoropyridin-3-yl)-3-((3-methyloxetan-3-yl)ethynyl)-5'H-spiro[chromeno[2,3-b]pyridine-5,4'-oxazol]-2'-amine (AMG-8718).

Dineen, T.A.Chen, K.Cheng, A.C.Derakhchan, K.Epstein, O.Esmay, J.Hickman, D.Kreiman, C.E.Marx, I.E.Wahl, R.C.Wen, P.H.Weiss, M.M.Whittington, D.A.Wood, S.Fremeau, R.T.White, R.D.Patel, V.F.

(2014) J.Med.Chem. 57: 9811-9831

  • DOI: 10.1021/jm5012676

  • PubMed Abstract: 
  • We have previously shown that the aminooxazoline xanthene scaffold can generate potent and orally efficacious BACE1 inhibitors although certain of these compounds exhibited potential hERG liabilities. In this article, we describe 4-aza substitution o ...

    We have previously shown that the aminooxazoline xanthene scaffold can generate potent and orally efficacious BACE1 inhibitors although certain of these compounds exhibited potential hERG liabilities. In this article, we describe 4-aza substitution on the xanthene core as a means to increase BACE1 potency while reducing hERG binding affinity. Further optimization of the P3 and P2' side chains resulted in the identification of 42 (AMG-8718), a compound with a balanced profile of BACE1 potency, hERG binding affinity, and Pgp recognition. This compound produced robust and sustained reductions of CSF and brain Aβ levels in a rat pharmacodynamic model and exhibited significantly reduced potential for QTc elongation in a cardiovascular safety model.


    Organizational Affiliation

    Departments of Therapeutic Discovery, ‡Neuroscience, §Molecular Structure and Characterization, ∥Pharmacokinetics and Drug Metabolism, and ⊥Comparative Biology and Safety Sciences, Amgen, Inc. , 360 Binney Street, Cambridge, Massachusetts 02142, and One Amgen Center Drive, Thousand Oaks, California 91320, United States.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Beta-secretase 1
A
411Homo sapiensMutation(s): 2 
Gene Names: BACE1 (BACE, KIAA1149)
EC: 3.4.23.46
Find proteins for P56817 (Homo sapiens)
Go to Gene View: BACE1
Go to UniProtKB:  P56817
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
IOD
Query on IOD

Download SDF File 
Download CCD File 
A
IODIDE ION
I
XMBWDFGMSWQBCA-UHFFFAOYSA-M
 Ligand Interaction
GOL
Query on GOL

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Download CCD File 
A
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
3LL
Query on 3LL

Download SDF File 
Download CCD File 
A
(5S)-7-(2-fluoropyridin-3-yl)-3-[(3-methyloxetan-3-yl)ethynyl]spiro[chromeno[2,3-b]pyridine-5,4'-[1,3]oxazol]-2'-amine
C25 H19 F N4 O3
GKKFBOARESVMBW-VWLOTQADSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
3LLIC50: 0.7 - 4.4 nM (99) BINDINGDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.251 
  • R-Value Work: 0.214 
  • Space Group: P 61 2 2
Unit Cell:
Length (Å)Angle (°)
a = 102.607α = 90.00
b = 102.607β = 90.00
c = 170.671γ = 120.00
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling
CrystalCleardata collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-01-21
    Type: Initial release