7MB6

SARS-CoV-2 Main Protease (Mpro) C145A in Complex with Cleavage Site Nsp6/7 (P6-P1)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.21 Å
  • R-Value Free: 0.272 
  • R-Value Work: 0.223 
  • R-Value Observed: 0.225 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Defining the substrate envelope of SARS-CoV-2 main protease to predict and avoid drug resistance.

Shaqra, A.M.Zvornicanin, S.N.Huang, Q.Y.J.Lockbaum, G.J.Knapp, M.Tandeske, L.Bakan, D.T.Flynn, J.Bolon, D.N.A.Moquin, S.Dovala, D.Kurt Yilmaz, N.Schiffer, C.A.

(2022) Nat Commun 13: 3556-3556

  • DOI: https://doi.org/10.1038/s41467-022-31210-w
  • Primary Citation of Related Structures:  
    7MB4, 7MB5, 7MB6, 7MB7, 7MB8, 7MB9, 7T70, 7T8M, 7T8R, 7T9Y, 7TA4, 7TA7, 7TB2, 7TBT, 7TC4

  • PubMed Abstract: 

    Coronaviruses can evolve and spread rapidly to cause severe disease morbidity and mortality, as exemplified by SARS-CoV-2 variants of the COVID-19 pandemic. Although currently available vaccines remain mostly effective against SARS-CoV-2 variants, additional treatment strategies are needed. Inhibitors that target essential viral enzymes, such as proteases and polymerases, represent key classes of antivirals. However, clinical use of antiviral therapies inevitably leads to emergence of drug resistance. In this study we implemented a strategy to pre-emptively address drug resistance to protease inhibitors targeting the main protease (M pro ) of SARS-CoV-2, an essential enzyme that promotes viral maturation. We solved nine high-resolution cocrystal structures of SARS-CoV-2 M pro bound to substrate peptides and six structures with cleavage products. These structures enabled us to define the substrate envelope of M pro , map the critical recognition elements, and identify evolutionarily vulnerable sites that may be susceptible to resistance mutations that would compromise binding of the newly developed M pro inhibitors. Our results suggest strategies for developing robust inhibitors against SARS-CoV-2 that will retain longer-lasting efficacy against this evolving viral pathogen.


  • Organizational Affiliation

    Department of Biochemistry and Molecular Biotechnology, University of Massachusetts Chan Medical School, Worcester, MA, 01605, US.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
3C-like proteinase
A, B
306Severe acute respiratory syndrome coronavirus 2Mutation(s): 1 
Gene Names: rep1a-1b
EC: 3.4.22.69
UniProt
Find proteins for P0DTD1 (Severe acute respiratory syndrome coronavirus 2)
Explore P0DTD1 
Go to UniProtKB:  P0DTD1
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP0DTD1
Sequence Annotations
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  • Reference Sequence

Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
LYS-VAL-ALA-THR-VAL-GLN6Severe acute respiratory syndrome coronavirus 2Mutation(s): 0 
Gene Names: rep1a-1b
UniProt
Find proteins for P0DTD1 (Severe acute respiratory syndrome coronavirus 2)
Explore P0DTD1 
Go to UniProtKB:  P0DTD1
Entity Groups  
UniProt GroupP0DTD1
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.21 Å
  • R-Value Free: 0.272 
  • R-Value Work: 0.223 
  • R-Value Observed: 0.225 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 124.852α = 90
b = 80.749β = 91.33
c = 62.688γ = 90
Software Package:
Software NamePurpose
XSCALEdata scaling
PHASERphasing
PHENIXrefinement
Cootmodel building
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesP01-GM109767

Revision History  (Full details and data files)

  • Version 1.0: 2022-06-22
    Type: Initial release
  • Version 1.1: 2022-06-29
    Changes: Database references
  • Version 1.2: 2023-10-18
    Changes: Data collection, Refinement description