2BX4

Crystal Structure of SARS Coronavirus Main Proteinase (P21212)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.79 Å
  • R-Value Free: 0.302 
  • R-Value Work: 0.208 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Ph-Dependent Conformational Flexibility of the Sars-Cov Main Proteinase (M(Pro)) Dimer: Molecular Dynamics Simulations and Multiple X-Ray Structure Analyses.

Tan, J.Verschueren, K.H.G.Anand, K.Shen, J.Yang, M.Xu, Y.Rao, Z.Bigalke, J.Heisen, B.Mesters, J.R.Chen, K.Shen, X.Jiang, H.Hilgenfeld, R.

(2005) J.Mol.Biol. 354: 25

  • DOI: 10.1016/j.jmb.2005.09.012
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The SARS coronavirus main proteinase (M(pro)) is a key enzyme in the processing of the viral polyproteins and thus an attractive target for the discovery of drugs directed against SARS. The enzyme has been shown by X-ray crystallography to undergo si ...

    The SARS coronavirus main proteinase (M(pro)) is a key enzyme in the processing of the viral polyproteins and thus an attractive target for the discovery of drugs directed against SARS. The enzyme has been shown by X-ray crystallography to undergo significant pH-dependent conformational changes. Here, we assess the conformational flexibility of the M(pro) by analysis of multiple crystal structures (including two new crystal forms) and by molecular dynamics (MD) calculations. The MD simulations take into account the different protonation states of two histidine residues in the substrate-binding site and explain the pH-activity profile of the enzyme. The low enzymatic activity of the M(pro) monomer and the need for dimerization are also discussed.


    Organizational Affiliation

    Center for Drug Discovery and Design, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Graduate School of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
3C-LIKE PROTEINASE
A
306Human SARS coronavirusMutation(s): 0 
Gene Names: rep
Find proteins for P0C6X7 (Human SARS coronavirus)
Go to UniProtKB:  P0C6X7
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.79 Å
  • R-Value Free: 0.302 
  • R-Value Work: 0.208 
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 108.230α = 90.00
b = 44.557β = 90.00
c = 54.198γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling
MOLREPphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2005-09-26
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Advisory, Refinement description, Version format compliance