1A1R

HCV NS3 PROTEASE DOMAIN:NS4A PEPTIDE COMPLEX


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.261 
  • R-Value Work: 0.216 
  • R-Value Observed: 0.216 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Crystal structure of the hepatitis C virus NS3 protease domain complexed with a synthetic NS4A cofactor peptide.

Kim, J.L.Morgenstern, K.A.Lin, C.Fox, T.Dwyer, M.D.Landro, J.A.Chambers, S.P.Markland, W.Lepre, C.A.O'Malley, E.T.Harbeson, S.L.Rice, C.M.Murcko, M.A.Caron, P.R.Thomson, J.A.

(1996) Cell 87: 343-355

  • DOI: https://doi.org/10.1016/s0092-8674(00)81351-3
  • Primary Citation of Related Structures:  
    1A1R

  • PubMed Abstract: 

    An estimated 1% of the global human population is infected by hepatitis C viruses (HCVs), and there are no broadly effective treatments for the debilitating progression of chronic hepatitis C. A serine protease located within the HCV NS3 protein processes the viral polyprotein at four specific sites and is considered essential for replication. Thus, it emerges as an attractive target for drug design. We report here the 2.5 angstrom resolution X-ray crystal structure of the NS3 protease domain complexed with a synthetic NS4A activator peptide. The protease has a chymotrypsin-like fold and features a tetrahedrally coordinated metal ion distal to the active site. The NS4A peptide intercalates within a beta sheet of the enzyme core.


  • Organizational Affiliation

    Vertex Pharmaceuticals Incorporated, Cambridge, Massachusetts 02139-4242, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
NS3 PROTEIN
A, B
198Hepacivirus hominisMutation(s): 1 
Gene Names: NS3
UniProt
Find proteins for P27958 (Hepatitis C virus genotype 1a (isolate H77))
Explore P27958 
Go to UniProtKB:  P27958
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP27958
Sequence Annotations
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  • Reference Sequence

Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
NS4A PROTEIN
C, D
23Hepacivirus hominisMutation(s): 1 
Gene Names: NS3
UniProt
Find proteins for O39914 (Hepacivirus hominis)
Explore O39914 
Go to UniProtKB:  O39914
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO39914
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download Ideal Coordinates CCD File 
E [auth A],
F [auth B]
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.261 
  • R-Value Work: 0.216 
  • R-Value Observed: 0.216 
  • Space Group: H 3 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 225α = 90
b = 225β = 90
c = 75.45γ = 120
Software Package:
Software NamePurpose
DMmodel building
PHASESphasing
X-PLORrefinement
DENZOdata reduction
SCALEPACKdata scaling
DMphasing

Structure Validation

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Entry History 

Revision History  (Full details and data files)

  • Version 1.0: 1998-06-17
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2024-02-07
    Changes: Data collection, Database references, Derived calculations