4ACU

Aminoimidazoles as BACE-1 Inhibitors. X-RAY CRYSTAL STRUCTURE OF BETA SECRETASE COMPLEXED WITH COMPOUND 14


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Free: 0.212 
  • R-Value Work: 0.174 
  • R-Value Observed: 0.176 

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
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
QN7
Query on QN7

Download CCD File 
A
(8S)-3,3-DIFLUORO-8-(2'-FLUORO-3'-METHOXYBIPHENYL-3-YL)-8-PYRIDIN-4-YL-2,3,4,8-TETRAHYDROIMIDAZO[1,5-A]PYRIMIDIN-6-AMINE
C24 H20 F3 N5 O
RECVUKARQVUVBY-XMMPIXPASA-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 %)
QN7IC50:  31   nM  BindingDB
QN7IC50:  10   nM  Binding MOAD
QN7IC50:  20   nM  BindingDB
QN7IC50 :  40.70000076293945   nM  PDBBind
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Free: 0.212 
  • R-Value Work: 0.174 
  • R-Value Observed: 0.176 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 47.588α = 90
b = 76.372β = 90
c = 104.213γ = 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