1A1R | pdb_00001a1r

HCV NS3 PROTEASE DOMAIN:NS4A PEPTIDE COMPLEX


Experimental Data Snapshot

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

wwPDB Validation 3D Report Full Report

Validation slider image for 1A1R

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 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.

Macromolecule Content 

  • Total Structure Weight: 47.01 kDa 
  • Atom Count: 2,815 
  • Modeled Residue Count: 368 
  • Deposited Residue Count: 442 
  • Unique protein chains: 2

Macromolecules

Find similar proteins by:|  3D Structure
Entity ID: 1
MoleculeChains  Sequence LengthOrganismDetailsImage
NS3 PROTEIN
A, B
198Orthohepacivirus 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
23Orthohepacivirus 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

Experimental Data & Validation

Experimental Data

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

View Full Validation Report



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