5HBZ

Structure of EAV NSP11 K170A mutant at 3.10A


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.10 Å
  • R-Value Free: 0.199 
  • R-Value Work: 0.195 
  • R-Value Observed: 0.195 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structural Biology of the Arterivirus nsp11 Endoribonucleases.

Zhang, M.Li, X.Deng, Z.Chen, Z.Liu, Y.Gao, Y.Wu, W.Chen, Z.

(2017) J Virol 91

  • DOI: 10.1128/JVI.01309-16
  • Primary Citation of Related Structures:  
    5EYI, 5HBZ, 5HC1

  • PubMed Abstract: 
  • Endoribonuclease (NendoU) is unique and conserved as a major genetic marker in nidoviruses that infect vertebrate hosts. Arterivirus nonstructural protein 11 (nsp11) was shown to have NendoU activity and play essential roles in the viral life cycle. Here, we report three crystal structures of porcine reproductive and respiratory syndrome virus (PRRSV) and equine arteritis virus (EAV) nsp11 mutants ...

    Endoribonuclease (NendoU) is unique and conserved as a major genetic marker in nidoviruses that infect vertebrate hosts. Arterivirus nonstructural protein 11 (nsp11) was shown to have NendoU activity and play essential roles in the viral life cycle. Here, we report three crystal structures of porcine reproductive and respiratory syndrome virus (PRRSV) and equine arteritis virus (EAV) nsp11 mutants. The structures of arterivirus nsp11 contain two conserved compact domains: the N-terminal domain (NTD) and C-terminal domain (CTD). The structures of PRRSV and EAV endoribonucleases are similar and conserved in the arterivirus, but they are greatly different from that of severe acute respiratory syndrome (SARS) and Middle East respiratory syndrome (MERS) coronaviruses (CoV), representing important human pathogens in the Nidovirales order. The catalytic center of NendoU activity is located in the CTD, where a positively charged groove is next to the key catalytic residues conserved in nidoviruses. Although the NTD is nearly identical, the catalytic region of the arterivirus nsp11 family proteins is remarkably flexible, and the oligomerization may be concentration dependent. In summary, our structures provide new insight into this key multifunctional NendoU family of proteins and lay a foundation for better understanding of the molecular mechanism and antiviral drug development.


    Organizational Affiliation

    State Key Laboratory of Agrobiotechnology, China Agricultural University, Beijing, China.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Non-structural protein 11A, B, C, D, E, F221Equine arteritis virus BucyrusMutation(s): 1 
Gene Names: rep1a-1b
EC: 3.4.22 (UniProt), 3.4.19.12 (UniProt), 3.4.21 (UniProt), 2.7.7.48 (UniProt), 3.6.4.12 (UniProt), 3.6.4.13 (UniProt)
UniProt
Find proteins for P19811 (Equine arteritis virus (strain Bucyrus))
Explore P19811 
Go to UniProtKB:  P19811
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.10 Å
  • R-Value Free: 0.199 
  • R-Value Work: 0.195 
  • R-Value Observed: 0.195 
  • Space Group: H 3 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 248.268α = 90
b = 248.268β = 90
c = 226.298γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling
BALBESphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2016-10-12
    Type: Initial release
  • Version 1.1: 2016-11-16
    Changes: Database references
  • Version 1.2: 2017-01-18
    Changes: Database references