3CWJ

Crystal structure of hcv ns5b polymerase with a novel pyridazinone inhibitor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.300 
  • R-Value Work: 0.237 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

4-(1,1-Dioxo-1,4-dihydro-1lambda6-benzo[1,4]thiazin-3-yl)-5-hydroxy-2H-pyridazin-3-ones as potent inhibitors of HCV NS5B polymerase

Ellis, D.A.Blazel, J.K.Webber, S.E.Tran, C.V.Dragovich, P.S.Sun, Z.Ruebsam, F.McGuire, H.M.Xiang, A.X.Zhao, J.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.Bartkowski, D.M.Nolan, T.G.Norris, D.A.Sergeeva, M.V.Kirkovsky, L.

(2008) Bioorg.Med.Chem.Lett. 18: 4628-4632

  • DOI: 10.1016/j.bmcl.2008.07.014

  • PubMed Abstract: 
  • 4-(1,1-Dioxo-1,4-dihydro-1lambda(6)-benzo[1,4]thiazin-3-yl)-5-hydroxy-2H-pyridazin-3-one analogs were discovered as a novel class of inhibitors of HCV NS5B polymerase. Structure-based design led to the identification of compound 3a that displayed pot ...

    4-(1,1-Dioxo-1,4-dihydro-1lambda(6)-benzo[1,4]thiazin-3-yl)-5-hydroxy-2H-pyridazin-3-one analogs were discovered as a novel class of inhibitors of HCV NS5B polymerase. Structure-based design led to the identification of compound 3a that displayed potent inhibitory activities in biochemical and replicon assays (1b IC(50)<10 nM; 1b EC(50)=1.1 nM) as well as good stability toward human liver microsomes (HLM t(1/2)>60 min).


    Organizational Affiliation

    Anadys Pharmaceuticals, Inc., 3115 Merryfield Row, San Diego, CA 92121, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
RNA-DIRECTED RNA POLYMERASE
A, B
578Hepatitis C virus genotype 1bMutation(s): 0 
Find proteins for P26663 (Hepatitis C virus genotype 1b)
Go to UniProtKB:  P26663
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
321
Query on 321

Download SDF File 
Download CCD File 
A, B
N-{3-[5-hydroxy-2-(3-methylbutyl)-3-oxo-6-thiophen-2-yl-2,3-dihydropyridazin-4-yl]-1,1-dioxido-2H-1,4-benzothiazin-7-yl}methanesulfonamide
C22 H24 N4 O6 S3
KLPXSYJOJCQFSY-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
321EC50: 1.1 - 11 nM (99) BINDINGDB
321IC50: <10 nM (99) BINDINGDB
321IC50: <10 nM BINDINGMOAD
321IC50: 10 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.300 
  • R-Value Work: 0.237 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 86.107α = 90.00
b = 106.393β = 90.00
c = 126.731γ = 90.00
Software Package:
Software NamePurpose
CrystalCleardata collection
HKL-2000data scaling
EPMRphasing
HKL-2000data reduction
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-04-21
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance