2GTH

crystal structure of the wildtype MHV coronavirus non-structural protein nsp15


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.256 
  • R-Value Work: 0.195 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

New Antiviral Target Revealed by the Hexameric Structure of Mouse Hepatitis Virus Nonstructural Protein nsp15

Xu, X.Zhai, Y.Sun, F.Lou, Z.Su, D.Xu, Y.Zhang, R.Joachimiak, A.Zhang, X.C.Bartlam, M.Rao, Z.

(2006) J.Virol. 80: 7909-7917

  • DOI: 10.1128/JVI.00525-06
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The unique coronavirus transcription/replication machinery comprised of multiple virus-encoded nonstructural proteins (nsp) plays a vital role during initial and intermediate phases of the viral life cycle. The crystal structure of mouse hepatitis vi ...

    The unique coronavirus transcription/replication machinery comprised of multiple virus-encoded nonstructural proteins (nsp) plays a vital role during initial and intermediate phases of the viral life cycle. The crystal structure of mouse hepatitis virus strain A59 (MHV-A59) nsp15 is reported at 2.15-A resolution. nsp15 is an XendoU endoribonuclease and is the first one from this family to have its structure unveiled. The MHV-A59 nsp15 monomer structure has a novel protein fold. Two nsp15 trimers form a back-to-back hexamer that is believed to be the functional unit. The structure reveals the catalytic site including the highly conserved residues His262, His277, and Lys317, which is supported by mutagenesis analysis. Gel filtration and enzyme activity assays confirmed that the hexamer is the active form for nsp15 and demonstrate the specificity of nsp15 for uridylate. The high sequence conservation of nsp15 in coronaviruses, including that of severe acute respiratory syndrome, suggests that this protein may provide a new target for the design of antiviral therapeutics.


    Organizational Affiliation

    Tsinghua-IBP Joint Research Group for Structural Biology, Tsinghua University, Beijing 100084, China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Replicase polyprotein 1ab
A
370Murine hepatitis virusGene Names: ORF1B
Find proteins for Q9J3E8 (Murine hepatitis virus)
Go to UniProtKB:  Q9J3E8
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.256 
  • R-Value Work: 0.195 
  • Space Group: P 63 2 2
Unit Cell:
Length (Å)Angle (°)
a = 86.435α = 90.00
b = 86.435β = 90.00
c = 219.220γ = 120.00
Software Package:
Software NamePurpose
HKL-2000data reduction
CrystalCleardata reduction
CrystalCleardata collection
HKL-2000data scaling
CNSphasing
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-08-15
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Derived calculations, Source and taxonomy, Version format compliance