2V6N

Crystal structures of the SARS-coronavirus main proteinase inactivated by benzotriazole compounds


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.98 Å
  • R-Value Free: 0.211 
  • R-Value Work: 0.164 
  • R-Value Observed: 0.166 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

A Structural View of the Inactivation of the Sars Coronavirus Main Proteinase by Benzotriazole Esters.

Verschueren, K.H.G.Pumpor, K.Anemueller, S.Chen, S.Mesters, J.R.Hilgenfeld, R.

(2008) Chem Biol 15: 597

  • DOI: 10.1016/j.chembiol.2008.04.011
  • Primary Citation of Related Structures:  
    2VJ1, 2V6N

  • PubMed Abstract: 
  • The main proteinase (M(pro)) of the severe acute respiratory syndrome (SARS) coronavirus is a principal target for the design of anticoronaviral compounds. Benzotriazole esters have been reported as potent nonpeptidic inhibitors of the enzyme, but their exact mechanism of action remains unclear ...

    The main proteinase (M(pro)) of the severe acute respiratory syndrome (SARS) coronavirus is a principal target for the design of anticoronaviral compounds. Benzotriazole esters have been reported as potent nonpeptidic inhibitors of the enzyme, but their exact mechanism of action remains unclear. Here we present crystal structures of SARS-CoV M(pro), the active-site cysteine of which has been acylated by benzotriazole esters that act as suicide inhibitors. In one of the structures, the thioester product has been hydrolyzed and benzoic acid is observed to bind to the hydrophobic S2 pocket. This structure also features the enzyme with a shortened N-terminal segment ("amputated N finger"). The results further the understanding of the important role of the N finger for catalysis as well as the design of benzotriazole inhibitors with improved specificity.


    Organizational Affiliation

    Institute of Biochemistry, Center for Structural and Cell Biology in Medicine, University of Lübeck, Lübeck, Germany.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
REPLICASE POLYPROTEIN 1ABA306Severe acute respiratory syndrome-related coronavirusMutation(s): 0 
Gene Names: rep1a-1b
EC: 3.4.24 (PDB Primary Data), 3.4.19.12 (UniProt), 3.4.22.69 (UniProt), 3.4.22 (UniProt), 2.7.7.48 (UniProt), 3.6.4.12 (UniProt), 3.6.4.13 (UniProt), 2.1.1 (UniProt), 3.1.13 (UniProt), 3.1 (UniProt)
Find proteins for P0C6X7 (Severe acute respiratory syndrome coronavirus)
Explore P0C6X7 
Go to UniProtKB:  P0C6X7
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MES
Query on MES

Download Ideal Coordinates CCD File 
C [auth A]2-(N-MORPHOLINO)-ETHANESULFONIC ACID
C6 H13 N O4 S
SXGZJKUKBWWHRA-UHFFFAOYSA-N
 Ligand Interaction
XP1
Query on XP1

Download Ideal Coordinates CCD File 
B [auth A]4-(DIMETHYLAMINO)BENZOIC ACID
C9 H11 N O2
YDIYEOMDOWUDTJ-UHFFFAOYSA-N
 Ligand Interaction
SO4
Query on SO4

Download Ideal Coordinates CCD File 
D [auth A]SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
XP1Ki :  1380   nM  PDBBind
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.98 Å
  • R-Value Free: 0.211 
  • R-Value Work: 0.164 
  • R-Value Observed: 0.166 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 108.265α = 90
b = 81.974β = 104.3
c = 53.418γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling
MOLREPphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2008-07-01
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Advisory, Version format compliance
  • Version 1.2: 2019-07-24
    Changes: Data collection, Derived calculations