6OAT

Structure of the Ganjam virus OTU bound to sheep ISG15


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.17 Å
  • R-Value Free: 0.304 
  • R-Value Work: 0.251 
  • R-Value Observed: 0.256 

wwPDB Validation   3D Report Full Report


This is version 1.0 of the entry. See complete history


Literature

Determining the molecular drivers of species-specific interferon-stimulated gene product 15 interactions with nairovirus ovarian tumor domain proteases.

Dzimianski, J.V.Scholte, F.E.M.Williams, I.L.Langley, C.Freitas, B.T.Spengler, J.R.Bergeron, E.Pegan, S.D.

(2019) PLoS One 14: e0226415-e0226415

  • DOI: 10.1371/journal.pone.0226415
  • Primary Citation of Related Structures:  
    6OAR, 6OAT

  • PubMed Abstract: 
  • Tick-borne nairoviruses (order Bunyavirales) encode an ovarian tumor domain protease (OTU) that suppresses the innate immune response by reversing the post-translational modification of proteins by ubiquitin (Ub) and interferon-stimulated gene product 15 (ISG15) ...

    Tick-borne nairoviruses (order Bunyavirales) encode an ovarian tumor domain protease (OTU) that suppresses the innate immune response by reversing the post-translational modification of proteins by ubiquitin (Ub) and interferon-stimulated gene product 15 (ISG15). Ub is highly conserved across eukaryotes, whereas ISG15 is only present in vertebrates and shows substantial sequence diversity. Prior attempts to address the effect of ISG15 diversity on viral protein-ISG15 interactions have focused on only a single species' ISG15 or a limited selection of nairovirus OTUs. To gain a more complete perspective of OTU-ISG15 interactions, we biochemically assessed the relative activities of 14 diverse nairovirus OTUs for 12 species' ISG15 and found that ISG15 activity is predominantly restricted to particular nairovirus lineages reflecting, in general, known virus-host associations. To uncover the underlying molecular factors driving OTUs affinity for ISG15, X-ray crystal structures of Kupe virus and Ganjam virus OTUs bound to sheep ISG15 were solved and compared to complexes of Crimean-Congo hemorrhagic fever virus and Erve virus OTUs bound to human and mouse ISG15, respectively. Through mutational and structural analysis seven residues in ISG15 were identified that predominantly influence ISG15 species specificity among nairovirus OTUs. Additionally, OTU residues were identified that influence ISG15 preference, suggesting the potential for viral OTUs to adapt to different host ISG15s. These findings provide a foundation to further develop research methods to trace nairovirus-host relationships and delineate the full impact of ISG15 diversity on nairovirus infection.


    Organizational Affiliation

    Department of Pharmaceutical and Biomedical Sciences, University of Georgia, Athens, Georgia, United States of America.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
RNA-dependent RNA polymeraseA, C178Ganjam virusMutation(s): 0 
UniProt
Find proteins for A0A191KWA2 (Ganjam virus)
Explore A0A191KWA2 
Go to UniProtKB:  A0A191KWA2
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA0A191KWA2
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Interferon stimulated gene 17B, D156Ovis ariesMutation(s): 0 
Gene Names: ISG17
UniProt
Find proteins for Q9GKP4 (Ovis aries)
Explore Q9GKP4 
Go to UniProtKB:  Q9GKP4
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9GKP4
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
AYE
Query on AYE

Download Ideal Coordinates CCD File 
E [auth A],
F [auth C]
prop-2-en-1-amine
C3 H7 N
VVJKKWFAADXIJK-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.17 Å
  • R-Value Free: 0.304 
  • R-Value Work: 0.251 
  • R-Value Observed: 0.256 
  • Space Group: P 61
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 55.388α = 90
b = 55.388β = 90
c = 497.31γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling
PHASERphasing

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)United States1R01AI109008

Revision History  (Full details and data files)

  • Version 1.0: 2020-01-08
    Type: Initial release