9NU6 | pdb_00009nu6

SARS-CoV-2 main protease with inhibitor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 
    0.217 (Depositor), 0.220 (DCC) 
  • R-Value Work: 
    0.173 (Depositor), 0.174 (DCC) 
  • R-Value Observed: 
    0.175 (Depositor) 

Starting Model: experimental
View more details

wwPDB Validation   3D Report Full Report


This is version 1.0 of the entry. See complete history


Literature

Discovery of Highly Potent Noncovalent Inhibitors of SARS-CoV-2 Main Protease through Computer-Aided Drug Design.

Okabe, A.Carney, D.W.Tawada, M.Akther, T.Aida, J.Takagi, T.Dougan, D.R.Leffler, A.E.Bell, J.A.Frye, L.Hickey, E.R.Komandla, M.Tao, W.Selimkhanov, J.Yonemori, K.Chang, E.Saikatendu, K.Ochida, A.

(2025) J Med Chem 

  • DOI: https://doi.org/10.1021/acs.jmedchem.5c01199
  • Primary Citation of Related Structures:  
    9DDF, 9DDG, 9NU6

  • PubMed Abstract: 

    The COVID-19 pandemic has highlighted a clear need to ensure rapid and equitable global access to health interventions in preparation for future coronavirus-driven pandemics. Here, we report the discovery of highly potent noncovalent inhibitors of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) main protease (Mpro) with pan-coronavirus (pan-CoV) Mpro inhibition through computer-aided drug design. Virtual screening led to the identification of a noncovalent hit compound with a piperazine core. Structure-guided scaffold morphing provided a novel trisubstituted piperidine core. Free energy perturbation (FEP)-guided designs, with induced-fit of Met49/Met165 and Gln189, resulted in the identification of highly potent compound 30 , which exhibits pan-CoV Mpro inhibition and cellular antiviral efficacy against the SARS-CoV-2 omicron variant. The optimized lead compound 30 was characterized by in vitro ADME/Tox assays and in vivo mouse pharmacokinetics. These findings suggest that compound 30 could be an addition to the repertoire of tools used to support future pandemic preparedness.


  • Organizational Affiliation
    • Takeda Pharmaceutical Company Limited, 26-1 Muraoka-Higashi 2-chrome, Fujisawa, Kanagawa 251-8555, Japan.

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 coronavirus 2Mutation(s): 0 
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
Expand
  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
A1B3B (Subject of Investigation/LOI)
Query on A1B3B

Download Ideal Coordinates CCD File 
C [auth A],
F [auth B]
N-[(3S,4S)-4-(3-chloro-5-fluorophenyl)-1-(1,6-naphthyridine-8-carbonyl)piperidin-3-yl]-N~2~-(trifluoroacetyl)-D-valinamide
C27 H26 Cl F4 N5 O3
SZDAKPLAFVWDHB-KSEOMHKRSA-N
BTB
Query on BTB

Download Ideal Coordinates CCD File 
D [auth A]2-[BIS-(2-HYDROXY-ETHYL)-AMINO]-2-HYDROXYMETHYL-PROPANE-1,3-DIOL
C8 H19 N O5
OWMVSZAMULFTJU-UHFFFAOYSA-N
EDO
Query on EDO

Download Ideal Coordinates CCD File 
E [auth A]1,2-ETHANEDIOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free:  0.217 (Depositor), 0.220 (DCC) 
  • R-Value Work:  0.173 (Depositor), 0.174 (DCC) 
  • R-Value Observed: 0.175 (Depositor) 
Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 100.604α = 90
b = 103.704β = 90
c = 67.675γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
Aimlessdata scaling
PHASERphasing
XDSdata reduction

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data

  • Released Date: 2025-10-22 
  • Deposition Author(s): Dougan, D.R.

Funding OrganizationLocationGrant Number
Not funded--

Revision History  (Full details and data files)

  • Version 1.0: 2025-10-22
    Type: Initial release