4B75

Discovery of an allosteric mechanism for the regulation of HCV NS3 protein function


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.53 Å
  • R-Value Free: 0.250 
  • R-Value Work: 0.161 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Discovery of an Allosteric Mechanism for the Regulation of Hcv Ns3 Protein Function.

Saalau-Bethell, S.M.Woodhead, A.J.Chessari, G.Carr, M.G.Coyle, J.Graham, B.Hiscock, S.D.Murray, C.W.Pathuri, P.Rich, S.J.Richardson, C.J.Williams, P.A.Jhoti, H.

(2012) Nat.Chem.Biol. 8: 920

  • DOI: 10.1038/nchembio.1081
  • Primary Citation of Related Structures:  4B6E, 4B6F, 4B71, 4B73, 4B74, 4B76
  • Also Cited By: 5FPS, 5FPT, 5FPY

  • PubMed Abstract: 
  • Here we report a highly conserved new binding site located at the interface between the protease and helicase domains of the hepatitis C virus (HCV) NS3 protein. Using a chemical lead, identified by fragment screening and structure-guided design, we ...

    Here we report a highly conserved new binding site located at the interface between the protease and helicase domains of the hepatitis C virus (HCV) NS3 protein. Using a chemical lead, identified by fragment screening and structure-guided design, we demonstrate that this site has a regulatory function on the protease activity via an allosteric mechanism. We propose that compounds binding at this allosteric site inhibit the function of the NS3 protein by stabilizing an inactive conformation and thus represent a new class of direct-acting antiviral agents.


    Organizational Affiliation

    Astex Pharmaceuticals, Cambridge Science Park, Cambridge, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
NON-STRUCTURAL PROTEIN 4A, SERINE PROTEASE NS3
A, B
666Hepatitis 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 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
4VA
Query on 4VA

Download SDF File 
Download CCD File 
A, B
(2S)-4-amino-N-[(1R)-1-(4-chloro-2-fluoro-3-phenoxyphenyl)propyl]-4-oxobutan-2-aminium
C19 H23 Cl F N2 O2
DXPCUPMRYIXTFI-BLLLJJGKSA-O
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.53 Å
  • R-Value Free: 0.250 
  • R-Value Work: 0.161 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 91.489α = 90.00
b = 108.828β = 90.00
c = 139.338γ = 90.00
Software Package:
Software NamePurpose
SCALAdata scaling
XDSdata reduction
CSEARCHphasing
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-10-03
    Type: Initial release
  • Version 1.1: 2012-10-17
    Type: Database references
  • Version 1.2: 2012-10-31
    Type: Database references