5EU8

Structure of FIPV main protease in complex with dual inhibitors


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.45 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.211 
  • R-Value Observed: 0.213 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Crystal Structure of Feline Infectious Peritonitis Virus Main Protease in Complex with Synergetic Dual Inhibitors

Wang, F.Chen, C.Liu, X.Yang, K.Xu, X.Yang, H.

(2015) J Virol 90: 1910-1917

  • DOI: 10.1128/JVI.02685-15
  • Primary Citation of Related Structures:  
    5EU8

  • PubMed Abstract: 
  • Coronaviruses (CoVs) can cause highly prevalent diseases in humans and animals. Feline infectious peritonitis virus (FIPV) belongs to the genus Alphacoronavirus, resulting in a lethal systemic granulomatous disease called feline infectious peritonitis (FIP), which is one of the most important fatal infectious diseases of cats worldwide ...

    Coronaviruses (CoVs) can cause highly prevalent diseases in humans and animals. Feline infectious peritonitis virus (FIPV) belongs to the genus Alphacoronavirus, resulting in a lethal systemic granulomatous disease called feline infectious peritonitis (FIP), which is one of the most important fatal infectious diseases of cats worldwide. No specific vaccines or drugs have been approved to treat FIP. CoV main proteases (M(pro)s) play a pivotal role in viral transcription and replication, making them an ideal target for drug development. Here, we report the crystal structure of FIPV M(pro) in complex with dual inhibitors, a zinc ion and a Michael acceptor. The complex structure elaborates a unique mechanism of two distinct inhibitors synergizing to inactivate the protease, providing a structural basis to design novel antivirals and suggesting the potential to take advantage of zinc as an adjunct therapy against CoV-associated diseases.


    Organizational Affiliation

    School of Life Sciences, Tianjin University, Tianjin, People's Republic of China Tianjin International Joint Academy of Biotechnology and Medicine, Tianjin, People's Republic of China xuxl@hznu.edu.cn yanght@tju.edu.cn.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
main proteaseA307Feline infectious peritonitis virusMutation(s): 0 
Gene Names: 1bORF1a
EC: 3.4.19.12 (UniProt), 3.4.22 (UniProt), 2.7.7.48 (UniProt), 3.6.4.12 (UniProt), 3.6.4.13 (UniProt), 3.1.13 (UniProt), 3.1 (UniProt), 2.1.1 (UniProt)
Find proteins for Q98VG9 (Feline coronavirus (strain FIPV WSU-79/1146))
Explore Q98VG9 
Go to UniProtKB:  Q98VG9
Protein Feature View
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  • Reference Sequence
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
N-[(5-METHYLISOXAZOL-3-YL)CARBONYL]ALANYL-L-VALYL-N~1~-((1R,2Z)-4-(BENZYLOXY)-4-OXO-1-{[(3R)-2-OXOPYRROLIDIN-3-YL]METHYL}BUT-2-ENYL)-L-LEUCINAMIDEB6synthetic constructMutation(s): 0 
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download CCD File 
A
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
EDO
Query on EDO

Download CCD File 
A
1,2-ETHANEDIOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
 Ligand Interaction
Biologically Interesting Molecules (External Reference) 1 Unique
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.45 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.211 
  • R-Value Observed: 0.213 
  • Space Group: I 4 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 112.261α = 90
b = 112.261β = 90
c = 102.102γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
SCALEPACKdata reduction
HKL-2000data scaling
PHASERphasing

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Key Basic Research Program of China (973 program)China2015CB859800
National Natural Science Foundation of ChinaChina31300150
Tianjin Marine Science and Technology ProgramChinaKJXH2014-16

Revision History 

  • Version 1.0: 2015-12-30
    Type: Initial release
  • Version 1.1: 2016-02-10
    Changes: Database references