8JCJ | pdb_00008jcj

The crystal structure of SARS-CoV-2 main protease in complex with Compound 18


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.70 Å
  • R-Value Free: 
    0.188 (Depositor), 0.215 (DCC) 
  • R-Value Work: 
    0.162 (Depositor) 
  • R-Value Observed: 
    0.164 (Depositor) 

Starting Model: experimental
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This is version 1.1 of the entry. See complete history

Literature

De novo design of SARS-CoV-2 main protease inhibitors with characteristic binding modes.

Zhu, Y.Meng, J.Feng, B.Zhao, Y.Zang, Y.Lu, L.Su, M.Yang, Q.Zhang, Q.Feng, L.Zhao, J.Shao, M.Ma, Y.Yang, X.Yang, H.Li, J.Jiang, X.Rao, Z.

(2024) Structure 32: 1327-1334.e3

  • DOI: https://doi.org/10.1016/j.str.2024.05.019
  • Primary Citation Related Structures: 
    8JCJ, 8JCK, 8JCL, 8JCM, 8JCN, 8JCO

  • PubMed Abstract: 

    The coronavirus disease 2019 (COVID-19) is caused by a novel coronavirus called severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which spreads rapidly all over the world. The main protease (M pro ) is significant to the replication and transcription of viruses, making it an attractive drug target against coronaviruses. Here, we introduce a series of novel inhibitors which are designed de novo through structure-based drug design approach that have great potential to inhibit SARS-CoV-2 M pro in vitro. High-resolution structures show that these inhibitors form covalent bonds with the catalytic cysteine through the novel dibromomethyl ketone (DBMK) as a reactive warhead. At the same time, the designed phenyl group beside the DBMK warhead inserts into the cleft between H41 and C145 through π-π stacking interaction, splitting the catalytic dyad and disrupting proton transfer. This unique binding model provides novel clues for the cysteine protease inhibitor development of SARS-CoV-2 as well as other pathogens.


  • Organizational Affiliation
    • Shanghai Institute for Advanced Immunochemical Studies and School of Life Science and Technology, ShanghaiTech University, Shanghai 201210, China; National Clinical Research Center for Infectious Disease, Shenzhen Third People's Hospital, Shenzhen 518112, China.

Macromolecule Content 

  • Total Structure Weight: 34.31 kDa 
  • Atom Count: 2,672 
  • Modeled Residue Count: 302 
  • Deposited Residue Count: 306 
  • Unique protein chains: 1

Macromolecules

Find similar proteins by:|  3D Structure
Entity ID: 1
MoleculeChains  Sequence LengthOrganismDetailsImage
3C-like proteinase nsp5306Severe acute respiratory syndrome coronavirus 2Mutation(s): 0 
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

Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.70 Å
  • R-Value Free:  0.188 (Depositor), 0.215 (DCC) 
  • R-Value Work:  0.162 (Depositor) 
  • R-Value Observed: 0.164 (Depositor) 
Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 97.704α = 90
b = 82.073β = 114.91
c = 51.777γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XSCALEdata scaling
XDSdata reduction
PHASERphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

& Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Natural Science Foundation of China (NSFC)China32200131

Revision History  (Full details and data files)

  • Version 1.0: 2024-05-15
    Type: Initial release
  • Version 1.1: 2025-05-28
    Changes: Advisory, Database references, Derived calculations, Structure summary