4K9H

Bace-1 inhibitor complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.29 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.199 
  • R-Value Observed: 0.202 

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:  
    4K8S, 4K9H, 4KE0, 4KE1

  • 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:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Beta-secretase 1ABC388Homo sapiensMutation(s): 0 
Gene Names: BACE1BACEKIAA1149
EC: 3.4.23.46
Find proteins for P56817 (Homo sapiens)
Explore P56817 
Go to UniProtKB:  P56817
NIH Common Fund Data Resources
PHAROS  P56817
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
1QU
Query on 1QU

Download CCD File 
A, B, C
1-cyclopentyl-N-[(2S,3R)-3-hydroxy-1-phenyl-4-{[3-(trifluoromethyl)benzyl]amino}butan-2-yl]-6-oxo-5-(2-oxopyrrolidin-1-yl)-1,6-dihydropyridine-3-carboxamide
C33 H37 F3 N4 O4
QKLJNYJRYSKKKP-LMSSTIIKSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
1QUIC50 :  76   nM  PDBBind
1QUIC50:  76   nM  Binding MOAD
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.29 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.199 
  • R-Value Observed: 0.202 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 82.538α = 90
b = 103.304β = 104.01
c = 100.856γ = 90
Software Package:
Software NamePurpose
ADSCdata collection
X-PLORmodel building
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling
X-PLORphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

  • Deposited Date: 2013-04-19 
  • Released Date: 2013-07-10 
  • Deposition Author(s): Jordan, S.R.

Revision History 

  • Version 1.0: 2013-07-10
    Type: Initial release
  • Version 1.1: 2013-07-17
    Changes: Database references