5T9Y

Crystal structure of the infectious salmon anemia virus (ISAV) hemagglutinin-esterase protein


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.168 
  • R-Value Work: 0.137 
  • R-Value Observed: 0.137 

wwPDB Validation 3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

Structure of the infectious salmon anemia virus receptor complex illustrates a unique binding strategy for attachment.

Cook, J.D.Sultana, A.Lee, J.E.

(2017) Proc Natl Acad Sci U S A 114: E2929-E2936

  • DOI: 10.1073/pnas.1617993114
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Orthomyxoviruses are an important family of RNA viruses, which include the various influenza viruses. Despite global efforts to eradicate orthomyxoviral pathogens, these infections remain pervasive. One such orthomyxovirus, infectious salmon anemia v ...

    Orthomyxoviruses are an important family of RNA viruses, which include the various influenza viruses. Despite global efforts to eradicate orthomyxoviral pathogens, these infections remain pervasive. One such orthomyxovirus, infectious salmon anemia virus (ISAV), spreads easily throughout farmed and wild salmonids, constituting a significant economic burden. ISAV entry requires the interplay of the virion-attached hemagglutinin-esterase and fusion glycoproteins. Preventing infections will rely on improved understanding of ISAV entry. Here, we present the crystal structures of ISAV hemagglutinin-esterase unbound and complexed with receptor. Several distinctive features observed in ISAV HE are not seen in any other viral glycoprotein. The structures reveal a unique mode of receptor binding that is dependent on the oligomeric assembly of hemagglutinin-esterase. Importantly, ISAV hemagglutinin-esterase receptor engagement does not initiate conformational rearrangements, suggesting a distinct viral entry mechanism. This work improves our understanding of ISAV pathogenesis and expands our knowledge on the overall diversity of viral glycoprotein-mediated entry mechanisms. Finally, it provides an atomic-resolution model of the primary neutralizing antigen critical for vaccine development.


    Organizational Affiliation

    Department of Laboratory Medicine and Pathobiology, Faculty of Medicine, University of Toronto, Toronto, ON M5S 1A8, Canada jeff.lee@utoronto.ca.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
HE protein
A, B, C
342Salmon isavirusMutation(s): 0 
Gene Names: HE
Find proteins for Q9J0Y0 (Salmon isavirus)
Go to UniProtKB:  Q9J0Y0
Protein Feature View
  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
15P
Query on 15P

Download CCD File 
C
POLYETHYLENE GLYCOL (N=34)
C69 H140 O35
VUYXVWGKCKTUMF-UHFFFAOYSA-N
 Ligand Interaction
GOL
Query on GOL

Download CCD File 
A, B
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
FMT
Query on FMT

Download CCD File 
A, B, C
FORMIC ACID
C H2 O2
BDAGIHXWWSANSR-UHFFFAOYSA-N
 Ligand Interaction
MG
Query on MG

Download CCD File 
A, B
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.168 
  • R-Value Work: 0.137 
  • R-Value Observed: 0.137 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 142.419α = 90
b = 93.289β = 122.01
c = 96.722γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
Aimlessdata scaling
Cootmodel building
PDB_EXTRACTdata extraction
XDSdata reduction
PHASERphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Natural Sciences and Engineering Research Council (NSERC, Canada)CanadaRGPIN 435607-13

Revision History 

  • Version 1.0: 2017-03-22
    Type: Initial release
  • Version 1.1: 2017-04-05
    Changes: Database references
  • Version 1.2: 2017-04-19
    Changes: Database references
  • Version 1.3: 2017-09-27
    Changes: Author supporting evidence
  • Version 1.4: 2020-01-08
    Changes: Author supporting evidence