7XAX | pdb_00007xax

Crystal structure of SARS coronavirus main protease in complex with Baicalei


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.25 Å
  • R-Value Free: 
    0.280 (Depositor), 0.280 (DCC) 
  • R-Value Work: 
    0.229 (Depositor), 0.230 (DCC) 
  • R-Value Observed: 
    0.232 (Depositor) 

Starting Model: experimental
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Ligand Structure Quality Assessment 

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This is version 1.2 of the entry. See complete history


Literature

Crystal structure of SARS-CoV 3C-like protease with baicalein.

Feng, J.Li, D.Zhang, J.Yin, X.Li, J.

(2022) Biochem Biophys Res Commun 611: 190-194

  • DOI: https://doi.org/10.1016/j.bbrc.2022.04.086
  • Primary Citation of Related Structures:  
    7XAX

  • PubMed Abstract: 

    The 3C-like protease (M pro , 3CL pro ) plays a key role in the replication process in coronaviruses (CoVs). The M pro is an essential enzyme mediates CoVs replication and is a promising target for development of antiviral drugs. Until now, baicalein has been shown the specific activity for SARS-CoV M pro in vitro experiments. In this study, we resolved the SARS-CoV M pro with baicalein by X-ray diffraction at 2.25 Å (PDB code 7XAX), which provided a structural basis for the research and development of baicalein as an anti-CoVs drug.


  • Organizational Affiliation

    Applied Biology Laboratory, College of Pharmaceutical and Biological Engineering, Shenyang University of Chemical Technology, Shenyang, 110142, China.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
3C-like proteinase nsp5
A, B
306Severe acute respiratory syndrome-related coronavirusMutation(s): 0 
EC: 3.4.22.69
UniProt
Find proteins for P0C6X7 (Severe acute respiratory syndrome coronavirus)
Explore P0C6X7 
Go to UniProtKB:  P0C6X7
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP0C6X7
Sequence Annotations
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
3WL (Subject of Investigation/LOI)
Query on 3WL

Download Ideal Coordinates CCD File 
C [auth A]5,6,7-trihydroxy-2-phenyl-4H-chromen-4-one
C15 H10 O5
FXNFHKRTJBSTCS-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.25 Å
  • R-Value Free:  0.280 (Depositor), 0.280 (DCC) 
  • R-Value Work:  0.229 (Depositor), 0.230 (DCC) 
  • R-Value Observed: 0.232 (Depositor) 
Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 55.51α = 90.951
b = 60.55β = 102.715
c = 68.28γ = 108.649
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata scaling
PHENIXphasing

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment 

Created with Raphaël 2.3.0Worse 01 BetterLigand structure goodness of fit to experimental dataBest fitted 3WLClick on this verticalbar to view details

Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Not funded--

Revision History  (Full details and data files)

  • Version 1.0: 2023-03-22
    Type: Initial release
  • Version 1.1: 2023-11-29
    Changes: Data collection, Refinement description
  • Version 1.2: 2024-10-02
    Changes: Database references