1ZGI

thrombin in complex with an oxazolopyridine inhibitor 21


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.264 
  • R-Value Work: 0.220 
  • R-Value Observed: 0.220 

wwPDB Validation 3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

Development of an oxazolopyridine series of dual thrombin/factor Xa inhibitors via structure-guided lead optimization.

Deng, J.Z.McMasters, D.R.Rabbat, P.M.Williams, P.D.Coburn, C.A.Yan, Y.Kuo, L.C.Lewis, S.D.Lucas, B.J.Krueger, J.A.Strulovici, B.Vacca, J.P.Lyle, T.A.Burgey, C.S.

(2005) Bioorg Med Chem Lett 15: 4411-4416

  • DOI: 10.1016/j.bmcl.2005.07.022
  • Primary Citation of Related Structures:  
    1ZGV, 1ZGI

  • PubMed Abstract: 
  • Thrombin-inhibitor X-ray crystal structures, in combination with the installation of binding elements optimized within the pyrazinone series of thrombin inhibitors, were utilized to transform a weak triazolopyrimidine lead into a series of potent oxa ...

    Thrombin-inhibitor X-ray crystal structures, in combination with the installation of binding elements optimized within the pyrazinone series of thrombin inhibitors, were utilized to transform a weak triazolopyrimidine lead into a series of potent oxazolopyridines. A modification intended to attenuate plasma protein binding (i.e., conversion of the P3 pyridine to a piperidine) conferred significant factor Xa activity to this series. Ultimately, these dual thrombin/factor Xa inhibitors demonstrated excellent in vitro and in vivo anticoagulant efficacy.


    Organizational Affiliation

    Department of Medicinal Chemistry, Merck Research Laboratories, West Point, PA 19486, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
ThrombinA287Homo sapiensMutation(s): 0 
Gene Names: F2
EC: 3.4.21.5
Find proteins for P00734 (Homo sapiens)
Explore P00734 
Go to UniProtKB:  P00734
NIH Common Fund Data Resources
PHAROS  P00734
Protein Feature View
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  • Reference Sequence
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
HirudinB10Hirudo medicinalisMutation(s): 0 
Find proteins for P01050 (Hirudo medicinalis)
Explore P01050 
Go to UniProtKB:  P01050
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
382
Query on 382

Download CCD File 
A
(R)-2-(2-(1H-1,2,4-TRIAZOL-1-YL)BENZYL)-N-(2,2-DIFLUORO-2-(PIPERIDIN-2-YL)ETHYL)OXAZOLO[4,5-C]PYRIDIN-4-AMINE
C22 H23 F2 N7 O
VYJOAYZRCNHDNG-GOSISDBHSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
TYS
Query on TYS
BL-PEPTIDE LINKINGC9 H11 N O6 STYR
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
382Ki :  4600   nM  PDBBind
382Ki:  4600   nM  Binding MOAD
382Ki:  4.599999904632568   nM  BindingDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.264 
  • R-Value Work: 0.220 
  • R-Value Observed: 0.220 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 70.93α = 90
b = 71.98β = 100.85
c = 73.07γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
CNSrefinement
CNSphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2005-09-27
    Type: Initial release
  • Version 1.1: 2008-04-30
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Atomic model, Database references, Derived calculations, Non-polymer description, Structure summary, Version format compliance
  • Version 1.3: 2012-12-12
    Changes: Other
  • Version 1.4: 2013-03-13
    Changes: Other