4HXD

Diversity of ubiquitin and ISG15 specificity amongst nairoviruses viral ovarian tumor domain proteases

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.85 Å
  • R-Value Free: 0.278 
  • R-Value Work: 0.210 
  • R-Value Observed: 0.214 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history. 


Literature

Diversity of Ubiquitin and ISG15 Specificity among Nairoviruses' Viral Ovarian Tumor Domain Proteases.

Capodagli, G.C., Deaton, M.K., Baker, E.A., Lumpkin, R.J., Pegan, S.D.

(2013) J Virol 87: 3815-3827

  • DOI: 10.1128/JVI.03252-12
  • Primary Citation of Related Structures:  
    4HXD

  • PubMed Abstract: 

    • Nairoviruses are responsible for numerous diseases that affect both humans and animal. Recent work has implicated the viral ovarian tumor domain (vOTU) as a possible nairovirus virulence factor due to its ability to edit ubiquitin (Ub) bound to cellular proteins and, at least in the case of Crimean-Congo hemorrhagic fever virus (CCHFV), to cleave the Ub-like protein interferon-stimulated gene 15 (ISG15), a protein involved in the regulation of host immunity ...

    Nairoviruses are responsible for numerous diseases that affect both humans and animal. Recent work has implicated the viral ovarian tumor domain (vOTU) as a possible nairovirus virulence factor due to its ability to edit ubiquitin (Ub) bound to cellular proteins and, at least in the case of Crimean-Congo hemorrhagic fever virus (CCHFV), to cleave the Ub-like protein interferon-stimulated gene 15 (ISG15), a protein involved in the regulation of host immunity. The prospective roles of vOTUs in immune evasion have generated several questions concerning whether vOTUs act through a preserved specificity for Ub- and ISG15-conjugated proteins and where that specificity may originate. To gain insight into the substrate specificity of vOTUs, enzymological studies were conducted on vOTUs from Dugbe, CCHFV, and Erve nairoviruses. These studies revealed that vOTUs originating from different nairoviruses display a significant divergence in their preference toward Ub and ISG15. In addition, a recently identified vOTU from turnip yellow mosaic tymovirus was evaluated to elucidate any possible similarities between vOTUs originating from different viral families. Although possessing a similar preference for certain polymeric Ub moieties, its activity toward Ub in general was significantly less then those of nairoviruses. Lastly, the X-ray crystallographic structure of the vOTU from the Dugbe nairovirus was obtained in complex with Ub to reveal structural commonalities of vOTUs originating from nairoviruses. The structure suggests that divergences between nairovirus vOTUs specificity originate at the primary structural level. Comparison of this structure to that originating from CCHFV identified key residues that infer the substrate specificity of vOTUs.

    Organizational Affiliation: 

    Department of Chemistry and Biochemistry, University of Denver, Denver, Colorado, USA.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Polyubiquitin-CA, C75Homo sapiensMutation(s): 0 
Gene Names: UBC
EC: 3.4.19.12
UniProt & NIH Common Fund Data Resources
Find proteins for P0CG48 (Homo sapiens)
Explore P0CG48 
Go to UniProtKB:  P0CG48
PHAROS:  P0CG48
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP0CG48
Protein Feature View
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  • Reference Sequence
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(by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
RNA-directed RNA polymerase LB, D174Dugbe virus (isolate ArD44313)Mutation(s): 0 
Gene Names: L
EC: 3.4.19.12 (PDB Primary Data), 2.7.7.48 (PDB Primary Data)
UniProt
Find proteins for Q66431 (Dugbe virus (isolate ArD44313))
Explore Q66431 
Go to UniProtKB:  Q66431
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ66431
Protein Feature View
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  • Reference Sequence
Small Molecules
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.85 Å
  • R-Value Free: 0.278 
  • R-Value Work: 0.210 
  • R-Value Observed: 0.214 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 113.508α = 90
b = 39.991β = 97.33
c = 114.189γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
PHASERphasing
REFMACrefinement
PDB_EXTRACTdata extraction
HKL-2000data collection
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2013-02-13
    Type: Initial release
  • Version 1.1: 2013-04-24
    Changes: Database references
  • Version 1.2: 2017-11-15
    Changes: Refinement description