4KIL

7-(4-fluorophenyl)-3-hydroxyquinolin-2(1H)-one bound to influenza 2009 H1N1 endonuclease


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Free: 0.196 
  • R-Value Work: 0.182 
  • R-Value Observed: 0.182 

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Ligand Structure Quality Assessment 


This is version 1.2 of the entry. See complete history


Literature

3-Hydroxyquinolin-2(1H)-ones As Inhibitors of Influenza A Endonuclease.

Sagong, H.Y.Parhi, A.Bauman, J.D.Patel, D.Vijayan, R.S.Das, K.Arnold, E.LaVoie, E.J.

(2013) ACS Med Chem Lett 4: 547-550

  • DOI: https://doi.org/10.1021/ml4001112
  • Primary Citation of Related Structures:  
    4KIL

  • PubMed Abstract: 

    Several 3-hydroxyquinolin-2(1H)-ones derivatives were synthesized and evaluated as inhibitors of 2009 pandemic H1N1 influenza A endonuclease. All five of the monobrominated 3-hydroxyquinolin(1H)-2-ones derivatives were synthesized. Suzuki-coupling of p-fluorophenylboronic acid with each of these brominated derivatives provided the respective p-fluorophenyl 3-hydroxyquinolin(1H)-2-ones. In addition to 3-hydroxyquinolin-2(1H)-one, its 4-methyl, 4-phenyl, 4-methyl-7-(p-fluorophenyl), and 4-phenyl-7-(p-fluorophenyl) derivatives were also synthesized. Comparative studies on their relative activity revealed that both 6- and 7-(p-fluorophenyl)-3-hydroxyquinolin-2(1H)-one are among the more potent inhibitors of H1N1 influenza A endonuclease. An X-ray crystal structure of 7-(p-fluorophenyl)-3-hydroxyquinolin-2(1H)-one complexed to the influenza endonuclease revealed that this molecule chelates to two metal ions at the active site of the enzyme.


  • Organizational Affiliation

    Department of Medicinal Chemistry, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey , Piscataway, New Jersey 08854-8020, United States.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Polymerase PA213Influenza A virus (A/Lima/WRAIR1695P/2009(H1N1))Mutation(s): 0 
Gene Names: PA
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
Sequence Annotations
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  • Reference Sequence
Small Molecules
Binding Affinity Annotations 
IDSourceBinding Affinity
1R5 PDBBind:  4KIL IC50: 500 (nM) from 1 assay(s)
Binding MOAD:  4KIL IC50: 500 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Free: 0.196 
  • R-Value Work: 0.182 
  • R-Value Observed: 0.182 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 88.699α = 90
b = 100.868β = 90
c = 66.441γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
PHENIXmodel building
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling
PHENIXphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2013-05-29
    Type: Initial release
  • Version 1.1: 2014-07-30
    Changes: Database references
  • Version 1.2: 2024-02-28
    Changes: Data collection, Database references, Derived calculations