3UFL

Discovery of Pyrrolidine-based b-Secretase Inhibitors: Lead Advancement through Conformational Design for Maintenance of Ligand Binding Efficiency


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.245 
  • R-Value Work: 0.212 
  • R-Value Observed: 0.214 

wwPDB Validation 3D Report Full Report



Literature

Discovery of pyrrolidine-based beta-secretase inhibitors: Lead advancement through conformational design for maintenance of ligand binding efficiency.

Stachel, S.J.Steele, T.G.Petrocchi, A.Haugabook, S.J.McGaughey, G.Katharine Holloway, M.Allison, T.Munshi, S.Zuck, P.Colussi, D.Tugasheva, K.Wolfe, A.Graham, S.L.Vacca, J.P.

(2012) Bioorg Med Chem Lett 22: 240-244

  • DOI: 10.1016/j.bmcl.2011.11.024
  • Primary Citation of Related Structures:  
    3UFL

  • PubMed Abstract: 
  • We have developed a novel series of pyrrolidine derived BACE-1 inhibitors. The potency of the weak initial lead structure was enhanced using library-based SAR methods. The series was then further advanced by rational design while maintaining a minima ...

    We have developed a novel series of pyrrolidine derived BACE-1 inhibitors. The potency of the weak initial lead structure was enhanced using library-based SAR methods. The series was then further advanced by rational design while maintaining a minimal ligand binding efficiency threshold. Ultimately, the co-crystal structure was obtained revealing that these inhibitors interacted with the enzyme in a unique fashion. In all, the potency of the series was enhanced by 4 orders of magnitude from the HTS lead with concomitant increases in physical properties needed for series advancement. The progression of these developments in a systematic fashion is described.


    Organizational Affiliation

    Department of Medicinal Chemistry, Merck Research Laboratories, Merck & Co., PO Box 4, West Point, PA 19486, USA. shawn_stachel@merck.com



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Beta-secretase 1A389Homo 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
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  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
508
Query on 508

Download CCD File 
A
(1R,4'S)-3,4-dihydro-2H-spiro[naphthalene-1,3'-pyrrolidin]-4'-yl[(2S,4R)-2,4-diphenylpiperidin-1-yl]methanone
C31 H34 N2 O
MXPUWFOJTXJTTA-RNWXARPHSA-N
 Ligand Interaction
SO4
Query on SO4

Download CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
GOL
Query on GOL

Download CCD File 
A
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
508IC50:  150   nM  BindingDB
508IC50:  150   nM  Binding MOAD
508IC50 :  150   nM  PDBBind
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.245 
  • R-Value Work: 0.212 
  • R-Value Observed: 0.214 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 103.668α = 90
b = 127.642β = 90
c = 76.846γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
REFMACrefinement
PDB_EXTRACTdata extraction
ADSCdata collection
MOLREPphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-01-18
    Type: Initial release