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: 2.00 Å
  • R-Value Free: 0.238 
  • R-Value Work: 0.199 
  • R-Value Observed: 0.201 

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:  
    4ACU, 4ACX

  • 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:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
BETA-SECRETASE 1A411Homo sapiensMutation(s): 2 
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
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
S8Z
Query on S8Z

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
ACT
Query on ACT

Download CCD File 
A
ACETATE ION
C2 H3 O2
QTBSBXVTEAMEQO-UHFFFAOYSA-M
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
S8ZIC50:  10   nM  Binding MOAD
S8ZIC50 :  77.5999984741211   nM  PDBBind
S8ZIC50:  35   nM  BindingDB
S8ZIC50:  78   nM  BindingDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.238 
  • R-Value Work: 0.199 
  • R-Value Observed: 0.201 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 48.009α = 90
b = 76.326β = 90
c = 104.73γ = 90
Software Package:
Software NamePurpose
BUSTERrefinement
MOSFLMdata reduction
SCALAdata scaling
MOLREPphasing

Structure Validation

View Full Validation Report



Entry History 

Revision History 

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