4ASH

Crystal structure of the NS6 protease from murine norovirus 1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.578 Å
  • R-Value Free: 0.208 
  • R-Value Work: 0.184 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structure of a Murine Norovirus Ns6 Protease-Product Complex Revealed by Adventitious Crystallisation.

Leen, E.N.Baeza, G.Curry, S.

(2012) Plos One 7: 38723

  • DOI: 10.1371/journal.pone.0038723
  • Also Cited By: 4X2Y, 4X2X, 4X2W, 4X2V

  • PubMed Abstract: 
  • Murine noroviruses have emerged as a valuable tool for investigating the molecular basis of infection and pathogenesis of the closely related human noroviruses, which are the major cause of non-bacterial gastroenteritis. The replication of noroviruse ...

    Murine noroviruses have emerged as a valuable tool for investigating the molecular basis of infection and pathogenesis of the closely related human noroviruses, which are the major cause of non-bacterial gastroenteritis. The replication of noroviruses relies on the proteolytic processing of a large polyprotein precursor into six non-structural proteins (NS1-2, NS3, NS4, NS5, NS6(pro), NS7(pol)) by the virally-encoded NS6 protease. We report here the crystal structure of MNV NS6(pro), which has been determined to a resolution of 1.6 Å. Adventitiously, the crystal contacts are mediated in part by the binding of the C-terminus of NS6(pro) within the peptide-binding cleft of a neighbouring molecule. This insertion occurs for both molecules in the asymmetric unit of the crystal in a manner that is consistent with physiologically-relevant binding, thereby providing two independent views of a protease-peptide complex. Since the NS6(pro) C-terminus is formed in vivo by NS6(pro) processing, these crystal contacts replicate the protease-product complex that is formed immediately following cleavage of the peptide bond at the NS6-NS7 junction. The observed mode of binding of the C-terminal product peptide yields new insights into the structural basis of NS6(pro) specificity.


    Organizational Affiliation

    Department of Life Sciences, Imperial College, London, United Kingdom.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
NS6 PROTEASE
A, B
185Murine norovirus 1Mutation(s): 1 
Find proteins for Q80J95 (Murine norovirus 1)
Go to UniProtKB:  Q80J95
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.578 Å
  • R-Value Free: 0.208 
  • R-Value Work: 0.184 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 50.920α = 90.00
b = 70.140β = 90.00
c = 192.130γ = 90.00
Software Package:
Software NamePurpose
XDSdata reduction
SCALAdata scaling
PHASERphasing
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-05-16
    Type: Initial release
  • Version 1.1: 2012-06-20
    Type: Other