5TLA

Crystal structure of mouse ISG15


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.244 Å
  • R-Value Free: 0.309 
  • R-Value Work: 0.256 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural Insights into the Interaction of Coronavirus Papain-Like Proteases and Interferon-Stimulated Gene Product 15 from Different Species.

Daczkowski, C.M.Dzimianski, J.V.Clasman, J.R.Goodwin, O.Y.Mesecar, A.D.Pegan, S.D.

(2017) J. Mol. Biol. 429: 1661-1683

  • DOI: 10.1016/j.jmb.2017.04.011
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Severe acute respiratory syndrome coronavirus (SARS-CoV) and Middle East respiratory syndrome coronavirus (MERS-CoV) encode multifunctional papain-like proteases (PLPs) that have the ability to process the viral polyprotein to facilitate RNA replicat ...

    Severe acute respiratory syndrome coronavirus (SARS-CoV) and Middle East respiratory syndrome coronavirus (MERS-CoV) encode multifunctional papain-like proteases (PLPs) that have the ability to process the viral polyprotein to facilitate RNA replication and antagonize the host innate immune response. The latter function involves reversing the post-translational modification of cellular proteins conjugated with either ubiquitin (Ub) or Ub-like interferon-stimulated gene product 15 (ISG15). Ub is known to be highly conserved among eukaryotes, but surprisingly, ISG15 is highly divergent among animals. The ramifications of this sequence divergence to the recognition of ISG15 by coronavirus PLPs at a structural and biochemical level are poorly understood. Therefore, the activity of PLPs from SARS-CoV, MERS-CoV, and mouse hepatitis virus was evaluated against seven ISG15s originating from an assortment of animal species susceptible, and not, to certain coronavirus infections. Excitingly, our kinetic, thermodynamic, and structural analysis revealed an array of different preferences among PLPs. Included in these studies is the first insight into a coronavirus PLP's interface with ISG15 via SARS-CoV PLpro in complex with the principle binding domain of human ISG15 (hISG15) and mouse ISG15s (mISG15s). The first X-ray structure of the full-length mISG15 protein is also reported and highlights a unique, twisted hinge region of ISG15 that is not conserved in hISG15, suggesting a potential role in differential recognition. Taken together, this new information provides a structural and biochemical understanding of the distinct specificities among coronavirus PLPs observed and addresses a critical gap of how PLPs can interact with ISG15s from a wide variety of species.


    Organizational Affiliation

    Department of Pharmaceutical and Biomedical Sciences, University of Georgia, Athens, GA 30602, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Ubiquitin-like protein ISG15
A, B, C, D, E, F, G, H, I, J
151Mus musculusMutation(s): 1 
Gene Names: Isg15 (G1p2, Ucrp)
Find proteins for Q64339 (Mus musculus)
Go to UniProtKB:  Q64339
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.244 Å
  • R-Value Free: 0.309 
  • R-Value Work: 0.256 
  • Space Group: P 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 85.759α = 90.00
b = 60.161β = 93.12
c = 172.658γ = 90.00
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
HKL-2000data scaling
PHENIXrefinement
PHASERphasing
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute Of Allergy and Infectious DiseasesUnited StatesR01AI109008
United States Department of AgricultureUnited States58-5030-5-034

Revision History 

  • Version 1.0: 2017-05-03
    Type: Initial release
  • Version 1.1: 2017-06-14
    Type: Database references, Refinement description
  • Version 1.2: 2017-08-23
    Type: Author supporting evidence, Database references, Refinement description, Structure summary