2QE5

Structure of HCV NS5B Bound to an Anthranilic Acid Inhibitor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.225 
  • R-Value Work: 0.218 
  • R-Value Observed: 0.218 

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Ligand Structure Quality Assessment 


This is version 1.1 of the entry. See complete history


Literature

Identification of Anthranilic Acid Derivatives as a Novel Class of Allosteric Inhibitors of Hepatitis C NS5B Polymerase

Nittoli, T.Curran, K.Insaf, S.DiGrandi, M.Orlowski, M.Chopra, R.Agarwal, A.Howe, A.Y.M.Prashad, A.Floyd, M.B.Johnson, B.Sutherland, A.Wheless, K.Feld, B.O'Connell, J.Mansour, T.S.Bloom, J.

(2007) J Med Chem 50: 2108-2116

  • DOI: 10.1021/jm061428x
  • Primary Citation of Related Structures:  
    2QE2, 2QE5

  • PubMed Abstract: 
  • A series of potent anthranilic acid-based inhibitors of the hepatitis C NS5B polymerase has been identified. The inhibitors bind to a site on NS5B between the thumb and palm regions adjacent to the active site as determined by X-ray crystallography of the enzyme-inhibitor complex ...

    A series of potent anthranilic acid-based inhibitors of the hepatitis C NS5B polymerase has been identified. The inhibitors bind to a site on NS5B between the thumb and palm regions adjacent to the active site as determined by X-ray crystallography of the enzyme-inhibitor complex. Guided by both molecular modeling and traditional SAR, the enzyme activity of the initial hit was improved by approximately 100-fold, yielding a series of potent and selective NS5B inhibitors with IC50 values as low as 10 nM. These compounds were also inhibitors of the HCV replicon in cultured HUH7 cells.


    Organizational Affiliation

    Chemical and Screening Sciences and Infectious Diseases Research, Wyeth Research, 401 N. Middletown Road, Pearl River, New York 10965, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
RNA-directed RNA polymeraseA, B, C, D578Hepatitis C virus subtype 1bMutation(s): 0 
Gene Names: NS5B
EC: 2.7.7.48 (PDB Primary Data), 3.4.21.98 (UniProt), 3.6.1.15 (UniProt), 3.6.4.13 (UniProt)
UniProt
Find proteins for Q99AU2 (Hepatitis C virus subtype 1b)
Explore Q99AU2 
Go to UniProtKB:  Q99AU2
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ99AU2
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
617
Query on 617

Download Ideal Coordinates CCD File 
E [auth A]2-{[(4-CHLOROPHENOXY)ACETYL]AMINO}BENZOIC ACID
C15 H12 Cl N O4
LXSDGQYDSDIUPN-UHFFFAOYSA-N
 Ligand Interaction
Binding Affinity Annotations 
IDSourceBinding Affinity
617 PDBBind:  2QE5 IC50: 1640 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.225 
  • R-Value Work: 0.218 
  • R-Value Observed: 0.218 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 101.34α = 90
b = 101.465β = 90
c = 251.213γ = 90
Software Package:
Software NamePurpose
CNSrefinement
CNXrefinement

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment 



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2007-10-02
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance