2V00

X-ray crystal structure of endothiapepsin complexed with compound 1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.55 Å
  • R-Value Free: 0.210 
  • R-Value Work: 0.167 
  • R-Value Observed: 0.170 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Discovery of a Novel Warhead Against Beta-Secretase Through Fragment-Based Lead Generation.

Geschwindner, S.Olsson, L.L.Albert, J.S.Deinum, J.Edwards, P.D.De Beer, T.Folmer, R.H.A.

(2007) J Med Chem 50: 5903

  • DOI: 10.1021/jm070825k
  • Primary Citation of Related Structures:  
    2V00

  • PubMed Abstract: 
  • Fragment-based lead generation was applied to find novel small-molecule inhibitors of beta-secretase (BACE-1), a key target for the treatment of Alzheimer's disease. Fragment hits coming from a 1D NMR screen were characterized by BIAcore, and the most promising compounds were soaked into protein crystals to help the rational design of more potent hit analogues ...

    Fragment-based lead generation was applied to find novel small-molecule inhibitors of beta-secretase (BACE-1), a key target for the treatment of Alzheimer's disease. Fragment hits coming from a 1D NMR screen were characterized by BIAcore, and the most promising compounds were soaked into protein crystals to help the rational design of more potent hit analogues. Problems arising due to our inability to grow BACE-1 crystals at the biologically relevant pH at which the screen was run were overcome by using endothiapepsin as a surrogate aspartyl protease. Among others, we identified 6-substituted isocytosines as a novel warhead against BACE-1, and the accompanying paper in this journal describes how these were optimized to a lead series of nanomolar inhibitors.1.


    Organizational Affiliation

    Global Structural Chemistry, AstraZeneca R&D, S-431 83 Mölndal, Sweden



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
ENDOTHIAPEPSIN A330Cryphonectria parasiticaMutation(s): 0 
Gene Names: EAPAEPN-1
EC: 3.4.23.22
Find proteins for P11838 (Cryphonectria parasitica)
Explore P11838 
Go to UniProtKB:  P11838
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
V15
Query on V15

Download Ideal Coordinates CCD File 
A
2-AMINO-6-(2-PHENYLETHYL)PYRIMIDIN-4(3H)-ONE
C12 H13 N3 O
CNBSPUGFNQVSJS-UHFFFAOYSA-N
 Ligand Interaction
GOL
Query on GOL

Download Ideal Coordinates CCD File 
A
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
ACT
Query on ACT

Download Ideal Coordinates CCD File 
A
ACETATE ION
C2 H3 O2
QTBSBXVTEAMEQO-UHFFFAOYSA-M
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
V15Kd:  220000   nM  Binding MOAD
V15Kd :  220000   nM  PDBBind
V15Kd:  220000   nM  BindingDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.55 Å
  • R-Value Free: 0.210 
  • R-Value Work: 0.167 
  • R-Value Observed: 0.170 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 45.494α = 90
b = 73.556β = 110.27
c = 53.438γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
MOSFLMdata reduction
SCALAdata scaling
MOLREPphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2007-12-04
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance