9AT4

Crystal structure of SARS-CoV-2 3CL protease in complex with a methylbicyclo[2.2.1]heptane 2-pyrrolidone inhibitor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.35 Å
  • R-Value Free: 0.172 
  • R-Value Work: 0.146 
  • R-Value Observed: 0.148 

Starting Model: experimental
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Ligand Structure Quality Assessment 


This is version 1.1 of the entry. See complete history


Literature

Structure-Guided Design of Potent Coronavirus Inhibitors with a 2-Pyrrolidone Scaffold: Biochemical, Crystallographic, and Virological Studies.

Dampalla, C.S.Kim, Y.Zabiegala, A.Howard, D.J.Nguyen, H.N.Madden, T.K.Thurman, H.A.Cooper, A.Liu, L.Battaile, K.P.Lovell, S.Chang, K.O.Groutas, W.C.

(2024) J Med Chem 67: 11937-11956

  • DOI: https://doi.org/10.1021/acs.jmedchem.4c00551
  • Primary Citation of Related Structures:  
    9ASV, 9ASW, 9ASY, 9ASZ, 9AT0, 9AT1, 9AT3, 9AT4, 9AT5, 9AT6, 9AT7, 9ATA, 9ATD, 9ATE, 9ATF, 9ATG, 9ATH, 9ATI, 9ATJ, 9ATS, 9ATT

  • PubMed Abstract: 

    Zoonotic coronaviruses are known to produce severe infections in humans and have been the cause of significant morbidity and mortality worldwide. SARS-CoV-2 was the largest and latest contributor of fatal cases, even though MERS-CoV has the highest case-fatality ratio among zoonotic coronaviruses. These infections pose a high risk to public health worldwide warranting efforts for the expeditious discovery of antivirals. Hence, we hereby describe a novel series of inhibitors of coronavirus 3CL pro embodying an N -substituted 2-pyrrolidone scaffold envisaged to exploit favorable interactions with the S3-S4 subsites and connected to an invariant Leu-Gln P 2-P1 recognition element. Several inhibitors showed nanomolar antiviral activity in enzyme and cell-based assays, with no significant cytotoxicity. High-resolution crystal structures of inhibitors bound to the 3CL pro were determined to probe and identify the molecular determinants associated with binding, to inform the structure-guided optimization of the inhibitors, and to confirm the mechanism of action of the inhibitors.


  • Organizational Affiliation

    Department of Chemistry and Biochemistry, Wichita State University, Wichita, Kansas 67260, United States.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
3C-like proteinase nsp5
A, B
308Severe 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  
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
A1AGM
Query on A1AGM

Download Ideal Coordinates CCD File 
D [auth A],
F [auth B]
(1R,2S)-2-{[N-({[(2S)-1-{[(1S,2S,4R)-bicyclo[2.2.1]heptan-2-yl]methyl}-5-oxopyrrolidin-2-yl]methoxy}carbonyl)-L-leucyl]amino}-1-hydroxy-3-[(3S)-2-oxopyrrolidin-3-yl]propane-1-sulfonic acid
C27 H44 N4 O9 S
RCEGRHOAYJTPPY-AQOOIRESSA-N
A1AGN
Query on A1AGN

Download Ideal Coordinates CCD File 
C [auth A],
E [auth B]
(1S,2S)-2-{[N-({[(2S)-1-{[(1S,2S,4R)-bicyclo[2.2.1]heptan-2-yl]methyl}-5-oxopyrrolidin-2-yl]methoxy}carbonyl)-L-leucyl]amino}-1-hydroxy-3-[(3S)-2-oxopyrrolidin-3-yl]propane-1-sulfonic acid
C27 H44 N4 O9 S
RCEGRHOAYJTPPY-XTXIHYAPSA-N
PG4
Query on PG4

Download Ideal Coordinates CCD File 
G [auth B]TETRAETHYLENE GLYCOL
C8 H18 O5
UWHCKJMYHZGTIT-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.35 Å
  • R-Value Free: 0.172 
  • R-Value Work: 0.146 
  • R-Value Observed: 0.148 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 55.3α = 90
b = 98.597β = 108.01
c = 59.045γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
Aimlessdata scaling
XDSdata reduction
PHASERphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)United StatesR01AI161085
National Institutes of Health/Office of the DirectorUnited StatesS10OD030394

Revision History  (Full details and data files)

  • Version 1.0: 2024-07-10
    Type: Initial release
  • Version 1.1: 2024-08-07
    Changes: Database references