3TJ0

Crystal Structure of Influenza B Virus Nucleoprotein


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.233 Å
  • R-Value Free: 0.291 
  • R-Value Work: 0.245 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Structural basis for RNA binding and homo-oligomer formation by influenza B virus nucleoprotein

Ng, A.K.L.Lam, M.K.H.Zhang, H.Liu, J.Au, S.W.N.Chan, P.K.S.Wang, J.Shaw, P.C.

(2012) J.Virol. 86: 6758-6767

  • DOI: 10.1128/JVI.00073-12

  • PubMed Abstract: 
  • Influenza virus nucleoprotein (NP) is the major component of the viral ribonucleoprotein complex, which is crucial for the transcription and replication of the viral genome. We have determined the crystal structure of influenza B virus NP to a resolu ...

    Influenza virus nucleoprotein (NP) is the major component of the viral ribonucleoprotein complex, which is crucial for the transcription and replication of the viral genome. We have determined the crystal structure of influenza B virus NP to a resolution of 3.2 Å. Influenza B NP contains a head, a body domain, and a tail loop. The electropositive groove between the head and body domains of influenza B NP is crucial for RNA binding. This groove also contains an extended flexible charged loop (amino acids [aa] 125 to 149), and two lysine clusters at the first half of this loop were shown to be crucial for binding RNA. Influenza B virus NP forms a crystallographic homotetramer by inserting the tail loop into the body domain of the neighboring NP molecule. A deeply buried salt bridge between R472 and E395 and a hydrophobic cluster at F468 are the major driving forces for the insertion. The analysis of the influenza B virus NP structure and function and comparisons with influenza A virus NP provide insights into the mechanisms of action and underpin efforts to design inhibitors for this class of proteins.


    Organizational Affiliation

    Centre for Protein Science and Crystallography, School of Life Sciences, The Chinese University of Hong Kong, Shatin, Hong Kong, China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Nucleoprotein
A, B
562Influenza B virusMutation(s): 0 
Gene Names: NP
Find proteins for C4LQ26 (Influenza B virus)
Go to UniProtKB:  C4LQ26
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.233 Å
  • R-Value Free: 0.291 
  • R-Value Work: 0.245 
  • Space Group: I 2 2 2
Unit Cell:
Length (Å)Angle (°)
a = 106.951α = 90.00
b = 123.342β = 90.00
c = 198.083γ = 90.00
Software Package:
Software NamePurpose
Cootmodel building
PHENIXrefinement
HKL-2000data collection
HKL-2000data scaling
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-06-20
    Type: Initial release