4KE1

Crystal structure of BACE1 in complex with hydroxyethylamine-macrocyclic inhibitor 19


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.91 Å
  • R-Value Free: 0.246 
  • R-Value Work: 0.215 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Hydroxyethylamine-based inhibitors of BACE1: P1-P3 macrocyclization can improve potency, selectivity, and cell activity.

Pennington, L.D.Whittington, D.A.Bartberger, M.D.Jordan, S.R.Monenschein, H.Nguyen, T.T.Yang, B.H.Xue, Q.M.Vounatsos, F.Wahl, R.C.Chen, K.Wood, S.Citron, M.Patel, V.F.Hitchcock, S.A.Zhong, W.

(2013) Bioorg.Med.Chem.Lett. 23: 4459-4464

  • DOI: 10.1016/j.bmcl.2013.05.028
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • We describe a systematic study of how macrocyclization in the P₁-P₃ region of hydroxyethylamine-based inhibitors of β-site amyloid precursor protein (APP)-cleaving enzyme (BACE1) modulates in vitro activity. This study reveals that in a number of ins ...

    We describe a systematic study of how macrocyclization in the P₁-P₃ region of hydroxyethylamine-based inhibitors of β-site amyloid precursor protein (APP)-cleaving enzyme (BACE1) modulates in vitro activity. This study reveals that in a number of instances macrocyclization of bis-terminal dienes leads to improved potency toward BACE1 and selectivity against cathepsin D (CatD), as well as greater amyloid β-peptide (Aβ)-lowering activity in HEK293T cells stably expressing APPSW. However, for several closely related analogs the benefits of macrocyclization are attenuated by the effects of other structural features in different regions of the molecules. X-ray crystal structures of three of these novel macrocyclic inhibitors bound to BACE1 revealed their binding conformations and interactions with the enzyme.


    Organizational Affiliation

    Medicinal Chemistry, Amgen, One Amgen Center Drive, Thousand Oaks, CA 91320, USA. lewpenn@icloud.com




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
1R6
Query on 1R6

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Download CCD File 
A
(12S)-12-[(1R)-2-{[(4S)-6-ethyl-3,4-dihydrospiro[chromene-2,1'-cyclobutan]-4-yl]amino}-1-hydroxyethyl]-1,13-diazatricyclo[13.3.1.1~6,10~]icosa-6(20),7,9,15(19),16-pentaene-14,18-dione
C34 H41 N3 O4
LCSGKLXXIKDHLA-OIFRRMEBSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
1R6IC50: 2.5 nM BINDINGMOAD
1R6IC50: 2.5 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.91 Å
  • R-Value Free: 0.246 
  • R-Value Work: 0.215 
  • Space Group: P 61 2 2
Unit Cell:
Length (Å)Angle (°)
a = 102.480α = 90.00
b = 102.480β = 90.00
c = 169.495γ = 120.00
Software Package:
Software NamePurpose
MOSFLMdata reduction
PDB_EXTRACTdata extraction
REFMACrefinement
SCALAdata scaling
REFMACphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-07-03
    Type: Initial release
  • Version 1.1: 2013-07-17
    Type: Database references