4ACX

Aminoimidazoles as BACE-1 Inhibitors. X-RAY CRYSTAL STRUCTURE OF BETA SECRETASE COMPLEXED WITH COMPOUND 23


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.238 
  • R-Value Work: 0.199 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Aminoimidazoles as BACE-1 inhibitors: the challenge to achieve in vivo brain efficacy.

Swahn, B.M.Holenz, J.Kihlstrom, J.Kolmodin, K.Lindstrom, J.Plobeck, N.Rotticci, D.Sehgelmeble, F.Sundstrom, M.Berg, S.v.Falting, J.Georgievska, B.Gustavsson, S.Neelissen, J.Ek, M.Olsson, L.L.Berg, S.

(2012) Bioorg. Med. Chem. Lett. 22: 1854-1859

  • DOI: 10.1016/j.bmcl.2012.01.079
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The evaluation of a series of bicyclic aminoimidazoles as potent BACE-1 inhibitors is described. The crystal structures of compounds 14 and 23 in complex with BACE-1 reveal hydrogen bond interactions with the protein important for achieving potent in ...

    The evaluation of a series of bicyclic aminoimidazoles as potent BACE-1 inhibitors is described. The crystal structures of compounds 14 and 23 in complex with BACE-1 reveal hydrogen bond interactions with the protein important for achieving potent inhibition. The optimization of permeability and efflux properties of the compounds is discussed as well as the importance of these properties for attaining in vivo brain efficacy. Compound (R)-25 was selected for evaluation in vivo in wild type mice and 1.5h after oral co-administration of 300μmol/kg (R)-25 and efflux inhibitor GF120918 the brain Aβ40 level was reduced by 17% and the plasma Aβ40 level by 76%.


    Organizational Affiliation

    Department of Medicinal Chemistry, AstraZeneca R&D Södertälje, SE-15185 Södertälje, Sweden.




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 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ACT
Query on ACT

Download SDF File 
Download CCD File 
A
ACETATE ION
C2 H3 O2
QTBSBXVTEAMEQO-UHFFFAOYSA-M
 Ligand Interaction
S8Z
Query on S8Z

Download SDF File 
Download CCD File 
A
(8R)-8-[4-(DIFLUOROMETHOXY)PHENYL]-3,3-DIFLUORO-8-[3-(3-METHOXYPROP-1-YN-1-YL)PHENYL]-2,3,4,8-TETRAHYDROIMIDAZO[1,5-A]PYRIMIDIN-6-AMINE
C23 H20 F4 N4 O2
DOQWIXXNZSOWDD-HSZRJFAPSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
S8ZIC50: 35 - 78 nM (99) BINDINGDB
S8ZIC50: 10 nM BINDINGMOAD
S8ZIC50: 77.6 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.238 
  • R-Value Work: 0.199 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 48.009α = 90.00
b = 76.326β = 90.00
c = 104.730γ = 90.00
Software Package:
Software NamePurpose
SCALAdata scaling
BUSTERrefinement
MOLREPphasing
MOSFLMdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Revision History 

  • Version 1.0: 2012-02-29
    Type: Initial release
  • Version 1.1: 2018-02-14
    Type: Database references, Structure summary