2WCX

Crystal Structure of Hepatitis C Virus NS5B Polymerase in Complex with Thienopyrrole-Based Finger-Loop Inhibitors


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.209 
  • R-Value Work: 0.167 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Optimization of Thienopyrrole-Based Finger-Loop Inhibitors of the Hepatitis C Virus Ns5B Polymerase.

Martin Hernando, J.I.Ontoria, J.M.Malancona, S.Attenni, B.Fiore, F.Bonelli, F.Koch, U.Di Marco, S.Colarusso, S.Ponzi, S.Gennari, N.Vignetti, S.E.Del Rosario Rico Ferreira, M.Habermann, J.Rowley, M.Narjes, F.

(2009) Chemmedchem 4: 1695

  • DOI: 10.1002/cmdc.200900184

  • PubMed Abstract: 
  • Infections caused by the hepatitis C virus (HCV) are a significant world health problem for which novel therapies are in urgent demand. The NS5B polymerase of HCV is responsible for the replication of viral RNA and has been a prime target in the sear ...

    Infections caused by the hepatitis C virus (HCV) are a significant world health problem for which novel therapies are in urgent demand. The NS5B polymerase of HCV is responsible for the replication of viral RNA and has been a prime target in the search for novel treatment options. We had discovered allosteric finger-loop inhibitors based on a thieno[3,2-b]pyrrole scaffold as an alternative to the related indole inhibitors. Optimization of the thienopyrrole series led to several N-acetamides with submicromolar potency in the cell-based replicon assay, but they lacked oral bioavailability in rats. By linking the N4-position to the ortho-position of the C5-aryl group, we were able to identify the tetracyclic thienopyrrole 40, which displayed a favorable pharmacokinetic profile in rats and dogs and is equipotent with recently disclosed finger-loop inhibitors based on an indole scaffold.


    Related Citations: 
    • Interdomain Communication in Hepatitis C Virus Polymerase Abolished by Small Molecule Inhibitors Bound to a Novel Allosteric Site.
      Di Marco, S.,Volpari, C.,Tomei, L.,Altamura, S.,Harper, S.,Narjes, F.,Koch, U.,Rowley, M.,De Francesco, R.,Migliaccio, G.,Carfi, A.
      (2005) J.Biol.Chem. 280: 29765


    Organizational Affiliation

    Department of Medicinal Chemistry, Istituto di Ricerche di Biologia Molecolare P. Angeletti S.p.A. Merck Sharp & Dohme Research Laboratories Rome, Via Pontina km 30,600, 00040 Pomezia (Italy).




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
RNA-DIRECTED RNA POLYMERASE
A
537Hepatitis C virus genotype 1bEC: 3.6.1.15, 3.4.22.-, 3.6.4.13, 2.7.7.48, 3.4.21.98
Find proteins for P26663 (Hepatitis C virus genotype 1b)
Go to UniProtKB:  P26663
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MN
Query on MN

Download SDF File 
Download CCD File 
A
MANGANESE (II) ION
Mn
WAEMQWOKJMHJLA-UHFFFAOYSA-N
 Ligand Interaction
VGC
Query on VGC

Download SDF File 
Download CCD File 
A
6-CYCLOHEXYL-4-METHYL-5-PHENYL-4H-THIENO[3,2-B]PYRROLE-2-CARBOXYLIC ACID
C20 H21 N O2 S
BNIGSPMLDODEAJ-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
VGCIC50: 25 nM BINDINGMOAD
VGCIC50: 25 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.209 
  • R-Value Work: 0.167 
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 68.407α = 90.00
b = 94.708β = 90.00
c = 95.540γ = 90.00
Software Package:
Software NamePurpose
SCALAdata scaling
MOSFLMdata reduction
REFMACrefinement
AMoREphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2009-03-17 
  • Released Date: 2009-08-18 
  • Deposition Author(s): Di Marco, S.

Revision History 

  • Version 1.0: 2009-08-18
    Type: Initial release
  • Version 1.1: 2011-11-23
    Type: Atomic model, Database references, Derived calculations, Non-polymer description, Other, Refinement description, Structure summary, Version format compliance