6C2I

Structure of Bace-1 (Beta-Secretase) in complex with : N-(3-((1R,5S,6R)-3-amino-5-methyl-2-oxa-4-azabicyclo[4.1.0]hept-3-en-5-yl)-4-fluorophenyl)-5-methoxypyrazine-2-carboxamide


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free: 0.184 
  • R-Value Work: 0.158 
  • R-Value Observed: 0.159 

Starting Model: experimental
View more details

wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 


This is version 1.3 of the entry. See complete history


Literature

Diastereoselective synthesis of fused cyclopropyl-3-amino-2,4-oxazine beta-amyloid cleaving enzyme (BACE) inhibitors and their biological evaluation.

Low, J.D.Bartberger, M.D.Cheng, Y.Whittington, D.Xue, Q.Wood, S.Allen, J.R.Minatti, A.E.

(2018) Bioorg Med Chem Lett 28: 1111-1115

  • DOI: https://doi.org/10.1016/j.bmcl.2018.01.056
  • Primary Citation of Related Structures:  
    6C2I

  • PubMed Abstract: 

    The diastereoselective synthesis and structure activity relationship (SAR) of a series of fused cyclopropyl-3-amino-2,4-oxazine (2-oxa-4-azabicyclo[4.1.0]hept-3-en-3-amine)-containing BACE inhibitors is described. Through these efforts compound 2 was identified as a potent (cell IC 50 = 15 nM) BACE inhibitor with acceptable ADME properties. When tested in vivo, compound 2 demonstrated a significant reduction of brain and cerebral spinal fluid (CSF) Aβ 40 levels (46% and 66%, respectively) in a rat pharmacodynamic study and thus represents a suitable starting point for the further development of in vivo efficacious compounds for the treatment of Alzheimer's disease.


  • Organizational Affiliation

    Department of Medicinal Chemistry, Amgen Inc., One Amgen Center Drive, Thousand Oaks, CA 91320, USA. Electronic address: low@amgen.com.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Beta-secretase 1411Homo sapiensMutation(s): 2 
Gene Names: BACE1BACEKIAA1149
EC: 3.4.23.46
UniProt & NIH Common Fund Data Resources
Find proteins for P56817 (Homo sapiens)
Explore P56817 
Go to UniProtKB:  P56817
PHAROS:  P56817
GTEx:  ENSG00000186318 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP56817
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
EJ7
Query on EJ7

Download Ideal Coordinates CCD File 
H [auth A]N-{3-[(1R,5S,6R)-3-amino-5-methyl-2-oxa-4-azabicyclo[4.1.0]hept-3-en-5-yl]-4-fluorophenyl}-5-methoxypyrazine-2-carboxamide
C18 H18 F N5 O3
LUOFRFUNXXGHFC-UCMVZMLTSA-N
IOD
Query on IOD

Download Ideal Coordinates CCD File 
B [auth A],
C [auth A],
D [auth A]
IODIDE ION
I
XMBWDFGMSWQBCA-UHFFFAOYSA-M
SO4
Query on SO4

Download Ideal Coordinates CCD File 
G [auth A]SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
GOL
Query on GOL

Download Ideal Coordinates CCD File 
E [auth A],
F [auth A]
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
Binding Affinity Annotations 
IDSourceBinding Affinity
EJ7 BindingDB:  6C2I IC50: min: 15, max: 81 (nM) from 3 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free: 0.184 
  • R-Value Work: 0.158 
  • R-Value Observed: 0.159 
  • Space Group: P 61 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 101.952α = 90
b = 101.952β = 90
c = 172.155γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data reduction
SCALEPACKdata scaling
PHASERphasing
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2018-02-21
    Type: Initial release
  • Version 1.1: 2018-03-21
    Changes: Database references
  • Version 1.2: 2023-10-04
    Changes: Data collection, Database references, Refinement description
  • Version 1.3: 2024-10-30
    Changes: Structure summary