3CO9

Crystal structure of HCV NS5B polymerase with a novel pyridazinone inhibitor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.218 
  • R-Value Observed: 0.220 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Pyrrolo[1,2-b]pyridazin-2-ones as potent inhibitors of HCV NS5B polymerase.

Ruebsam, F.Webber, S.E.Tran, M.T.Tran, C.V.Murphy, D.E.Zhao, J.Dragovich, P.S.Kim, S.H.Li, L.S.Zhou, Y.Han, Q.Kissinger, C.R.Showalter, R.E.Lardy, M.Shah, A.M.Tsan, M.Patel, R.Lebrun, L.A.Kamran, R.Sergeeva, M.V.Bartkowski, D.M.Nolan, T.G.Norris, D.A.Kirkovsky, L.

(2008) Bioorg Med Chem Lett 18: 3616-3621

  • DOI: 10.1016/j.bmcl.2008.04.066
  • Primary Citation of Related Structures:  
    3CO9

  • PubMed Abstract: 
  • Pyrrolo[1,2-b]pyridazin-2-one analogs were discovered as a novel class of inhibitors of genotype 1 HCV NS5B polymerase. Structure-based design led to the discovery of compound 3 k, which displayed potent inhibitory activities in biochemical and replicon assays (IC(50) (1b)<10nM; EC(50) (1b)=12 nM) as well as good stability towards human liver microsomes (HLM t(1/2)>60 min) ...

    Pyrrolo[1,2-b]pyridazin-2-one analogs were discovered as a novel class of inhibitors of genotype 1 HCV NS5B polymerase. Structure-based design led to the discovery of compound 3 k, which displayed potent inhibitory activities in biochemical and replicon assays (IC(50) (1b)<10nM; EC(50) (1b)=12 nM) as well as good stability towards human liver microsomes (HLM t(1/2)>60 min).


    Organizational Affiliation

    Anadys Pharmaceuticals, Inc., 3115 Merryfield Row, San Diego, CA 92121, USA. fruebsam@anadyspharma.com



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
RNA-directed RNA polymeraseAB578Hepatitis C virus (isolate BK)Mutation(s): 1 
EC: 2.7.7.48 (PDB Primary Data), 3.4.22 (UniProt), 3.4.21.98 (UniProt), 3.6.1.15 (UniProt), 3.6.4.13 (UniProt)
Find proteins for P26663 (Hepatitis C virus genotype 1b (isolate BK))
Explore P26663 
Go to UniProtKB:  P26663
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
3MS
Query on 3MS

Download CCD File 
A, B
N-{3-[4-hydroxy-1-(3-methylbutyl)-2-oxo-1,2-dihydropyrrolo[1,2-b]pyridazin-3-yl]-1,1-dioxido-2H-1,2,4-benzothiadiazin-7 -yl}methanesulfonamide
C20 H23 N5 O6 S2
FTVCONULIKITPZ-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
3MSIC50 :  10   nM  PDBBind
3MSIC50:  10   nM  BindingDB
3MSEC50:  8.5   nM  BindingDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.218 
  • R-Value Observed: 0.220 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 85.701α = 90
b = 106.423β = 90
c = 126.431γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
HKL-2000data collection
HKL-2000data reduction
HKL-2000data scaling
EPMRphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-02-10
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance