A RNA binding protein from Crimean-Congo hemorrhagic fever virus

Experimental Data Snapshot

  • Resolution: 2.30 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.224 
  • R-Value Observed: 0.226 

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Crimean-Congo hemorrhagic fever virus nucleoprotein reveals endonuclease activity in bunyaviruses

Guo, Y.Wang, W.M.Ji, W.Deng, M.Sun, Y.N.Zhou, H.Yang, C.Deng, F.Wang, H.Hu, Z.Lou, Z.Y.Rao, Z.H.

(2012) Proc Natl Acad Sci U S A 109: 5046-5051

  • DOI: https://doi.org/10.1073/pnas.1200808109
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Crimean-Congo hemorrhagic fever virus (CCHFV), a virus with high mortality in humans, is a member of the genus Nairovirus in the family Bunyaviridae, and is a causative agent of severe hemorrhagic fever (HF). It is classified as a biosafety level 4 pathogen and a potential bioterrorism agent due to its aerosol infectivity and its ability to cause HF outbreaks with high case fatality (∼30%). However, little is known about the structural features and function of nucleoproteins (NPs) in the Bunyaviridae, especially in CCHFV. Here we report a 2.3-Å resolution crystal structure of the CCHFV nucleoprotein. The protein has a racket-shaped overall structure with distinct "head" and "stalk" domains and differs significantly with NPs reported so far from other negative-sense single-stranded RNA viruses. Furthermore, CCHFV NP shows a distinct metal-dependent DNA-specific endonuclease activity. Single residue mutations in the predicted active site resulted in a significant reduction in the observed endonuclease activity. Our results present a new folding mechanism and function for a negative-strand RNA virus nucleoprotein, extend our structural insight into bunyavirus NPs, and provide a potential target for antiviral drug development to treat CCHFV infection.

  • Organizational Affiliation

    Laboratory of Structural Biology, School of Medicine and Life Sciences, Tsinghua University, Beijing 100084, China.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Nucleocapsid protein482Orthonairovirus haemorrhagiaeMutation(s): 0 
Find proteins for P89522 (Crimean-Congo hemorrhagic fever virus (strain Nigeria/IbAr10200/1970))
Explore P89522 
Go to UniProtKB:  P89522
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP89522
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.30 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.224 
  • R-Value Observed: 0.226 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 58.339α = 90
b = 67.898β = 90
c = 131.506γ = 90
Software Package:
Software NamePurpose
ADSCdata collection
PHENIXmodel building
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: 2012-03-28
    Type: Initial release
  • Version 1.1: 2013-06-26
    Changes: Database references
  • Version 1.2: 2024-03-20
    Changes: Data collection, Database references