Structure of Bace-1 (Beta-Secretase) in complex with N-((2S,3R)-1-(4-fluorophenyl)-3-hydroxy-4-((6'-neopentyl-3',4'-dihydrospiro[cyclobutane-1,2'-pyrano[2,3-b]pyridin]-4'-yl)amino)butan-2-yl)acetamide

Experimental Data Snapshot

  • Resolution: 2.50 Å
  • R-Value Free: 0.289 
  • R-Value Work: 0.221 
  • R-Value Observed: 0.224 

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Ligand Structure Quality Assessment 

This is version 1.1 of the entry. See complete history


A Potent and Orally Efficacious, Hydroxyethylamine-Based Inhibitor of beta-Secretase.

Kaller, M.R.Harried, S.S.Albrecht, B.Amarante, P.Babu-Khan, S.Bartberger, M.D.Brown, J.Brown, R.Chen, K.Cheng, Y.Citron, M.Croghan, M.D.Graceffa, R.Hickman, D.Judd, T.Kriemen, C.La, D.Li, V.Lopez, P.Luo, Y.Masse, C.Monenschein, H.Nguyen, T.Pennington, L.D.Miguel, T.S.Sickmier, E.A.Wahl, R.C.Weiss, M.M.Wen, P.H.Williamson, T.Wood, S.Xue, M.Yang, B.Zhang, J.Patel, V.Zhong, W.Hitchcock, S.

(2012) ACS Med Chem Lett 3: 886-891

  • DOI: https://doi.org/10.1021/ml3000148
  • Primary Citation of Related Structures:  
    4DUS, 4FS4

  • PubMed Abstract: 

    β-Secretase inhibitors are potentially disease-modifying treatments for Alzheimer's disease. Previous efforts in our laboratory have resulted in hydroxyethylamine-derived inhibitors such as 1 with low nanomolar potency against β-site amyloid precursor protein cleaving enzyme (BACE). When dosed intravenously, compound 1 was also shown to significantly reduce Aβ40 levels in plasma, brain, and cerebral spinal fluid. Herein, we report further optimizations that led to the discovery of inhibitor 16 as a novel, potent, and orally efficacious BACE inhibitor.

  • Organizational Affiliation

    Chemistry Research and Discovery, Department of Molecular Structure, Department of Neuroscience, Department of HTS and Molecular Pharmacology, and Department of Pharmacokinetics and Drug Metabolism, Amgen Inc. , One Amgen Center Drive, Thousand Oaks, California 91320, United States.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Beta-secretase 1411Homo sapiensMutation(s): 0 
Gene Names: BACE1BACEKIAA1149
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
  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on 0MP

Download Ideal Coordinates CCD File 
K [auth A]N-((2S,3R)-1-(4-fluorophenyl)-3-hydroxy-4-((6'-neopentyl-3',4'-dihydrospiro[cyclobutane-1,2'-pyrano[2,3-b]pyridin]-4'-yl)amino)butan-2-yl)acetamide
C28 H38 F N3 O3
Query on IOD

Download Ideal Coordinates CCD File 
B [auth A]
C [auth A]
D [auth A]
E [auth A]
F [auth A]
B [auth A],
C [auth A],
D [auth A],
E [auth A],
F [auth A],
G [auth A],
H [auth A]
Query on GOL

Download Ideal Coordinates CCD File 
I [auth A],
J [auth A]
C3 H8 O3
Binding Affinity Annotations 
IDSourceBinding Affinity
0MP BindingDB:  4DUS IC50: min: 5, max: 13 (nM) from 4 assay(s)
OMP PDBBind:  4DUS IC50: 5 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Resolution: 2.50 Å
  • R-Value Free: 0.289 
  • R-Value Work: 0.221 
  • R-Value Observed: 0.224 
  • Space Group: P 61 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 102.309α = 90
b = 102.309β = 90
c = 169.758γ = 120
Software Package:
Software NamePurpose
SCALEPACKdata scaling
PDB_EXTRACTdata extraction
BOSdata collection
HKL-2000data reduction

Structure Validation

View Full Validation Report

Ligand Structure Quality Assessment 

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2012-10-10
    Type: Initial release
  • Version 1.1: 2014-07-02
    Changes: Database references