3AW0

Structure of SARS 3CL protease with peptidic aldehyde inhibitor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.286 
  • R-Value Work: 0.225 
  • R-Value Observed: 0.228 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structure-Based Design, Synthesis, and Evaluation of Peptide-Mimetic SARS 3CL Protease Inhibitors.

Akaji, K.Konno, H.Mitsui, H.Teruya, K.Shimamoto, Y.Hattori, Y.Ozaki, T.Kusunoki, M.Sanjoh, A.

(2011) J Med Chem 54: 7962-7973

  • DOI: 10.1021/jm200870n
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • The design and evaluation of low molecular weight peptide-based severe acute respiratory syndrome (SARS) chymotrypsin-like protease (3CL) protease inhibitors are described. A substrate-based peptide aldehyde was selected as a starting compound, and o ...

    The design and evaluation of low molecular weight peptide-based severe acute respiratory syndrome (SARS) chymotrypsin-like protease (3CL) protease inhibitors are described. A substrate-based peptide aldehyde was selected as a starting compound, and optimum side-chain structures were determined, based on a comparison of inhibitory activities with Michael type inhibitors. For the efficient screening of peptide aldehydes containing a specific C-terminal residue, a new approach employing thioacetal to aldehyde conversion mediated by N-bromosuccinimide was devised. Structural optimization was carried out based on X-ray crystallographic analyses of the R188I SARS 3CL protease in a complex with each inhibitor to provide a tetrapeptide aldehyde with an IC(50) value of 98 nM. The resulting compound carried no substrate sequence, except for a P(3) site directed toward the outside of the protease. X-ray crystallography provided insights into the protein-ligand interactions.


    Organizational Affiliation

    Department of Medicinal Chemistry, Kyoto Pharmaceutical University, Yamashina-ku, Kyoto 607-8412, Japan.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
3C-Like ProteinaseA306Severe acute respiratory syndrome-related coronavirusMutation(s): 1 
Gene Names: 1a
EC: 3.4.22.69 (PDB Primary Data), 3.4.19.12 (UniProt), 3.4.22 (UniProt)
Find proteins for P0C6U8 (Human SARS coronavirus)
Explore P0C6U8 
Go to UniProtKB:  P0C6U8
Protein Feature View
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  • Reference Sequence
  • Find similar proteins by: Sequence   |   Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
peptide ACE-SER-ALA-VAL-LEU-HIS-HB6N/AMutation(s): 0 
Protein Feature View
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  • Reference Sequence
Small Molecules
Biologically Interesting Molecules 1 Unique
IDChainsNameType/Class2D Diagram3D Interactions
PRD_001000
Query on PRD_001000
Bpeptide ACE-SER-ALA-VAL-LEU-HIS-HP /  Enzyme inhibitor

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Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
HSV
Query on HSV
BL-PEPTIDE LINKINGC6 H10 N3 OHIS
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.286 
  • R-Value Work: 0.225 
  • R-Value Observed: 0.228 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 108.384α = 90
b = 81.606β = 104.24
c = 53.33γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
MOLREPphasing
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-12-14
    Type: Initial release
  • Version 1.1: 2012-12-12
    Changes: Other
  • Version 1.2: 2015-07-01
    Changes: Structure summary