2JDQ

C-terminal domain of influenza A virus polymerase PB2 subunit in complex with human importin alpha5


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.247 
  • R-Value Work: 0.206 
  • R-Value Observed: 0.208 

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This is version 1.2 of the entry. See complete history


Literature

Structure and Nuclear Import Function of the C- Terminal Domain of Influenza Virus Polymerase Pb2 Subunit

Tarendeau, F.Boudet, J.Guilligay, D.Mas, P.Bougault, C.Boulo, S.Baudin, F.Ruigrok, R.W.H.Daigle, N.Ellenberg, J.Cusack, S.Simorre, J.-P.Hart, D.J.

(2007) Nat Struct Mol Biol 14: 229

  • DOI: 10.1038/nsmb1212
  • Primary Citation of Related Structures:  
    2JDQ, 2GMO

  • PubMed Abstract: 
  • The trimeric influenza virus polymerase, comprising subunits PA, PB1 and PB2, is responsible for transcription and replication of the segmented viral RNA genome. Using a novel library-based screening technique called expression of soluble proteins by ...

    The trimeric influenza virus polymerase, comprising subunits PA, PB1 and PB2, is responsible for transcription and replication of the segmented viral RNA genome. Using a novel library-based screening technique called expression of soluble proteins by random incremental truncation (ESPRIT), we identified an independently folded C-terminal domain from PB2 and determined its solution structure by NMR. Using green fluorescent protein fusions, we show that both the domain and the full-length PB2 subunit are efficiently imported into the nucleus dependent on a previously overlooked bipartite nuclear localization sequence (NLS). The crystal structure of the domain complexed with human importin alpha5 shows how the last 20 residues unfold to permit binding to the import factor. The domain contains three surface residues implicated in adaptation from avian to mammalian hosts. One of these tethers the NLS-containing peptide to the core of the domain in the unbound state.


    Organizational Affiliation

    European Molecular Biology Laboratory (EMBL) Grenoble Outstation, 6 rue Jules Horowitz, BP181, 38042 Grenoble Cedex 9, France.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
IMPORTIN ALPHA-1 SUBUNITAB450Homo sapiensMutation(s): 0 
Gene Names: KPNA1RCH2
Find proteins for P52294 (Homo sapiens)
Explore P52294 
Go to UniProtKB:  P52294
NIH Common Fund Data Resources
PHAROS  P52294
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
POLYMERASE BASIC PROTEIN 2DE83Influenza A virusMutation(s): 0 
Find proteins for P31345 (Influenza A virus (strain A/Victoria/3/1975 H3N2))
Explore P31345 
Go to UniProtKB:  P31345
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.247 
  • R-Value Work: 0.206 
  • R-Value Observed: 0.208 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 94.97α = 90
b = 100.55β = 90
c = 151.84γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata reduction
XSCALEdata scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-02-27
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Advisory, Version format compliance
  • Version 1.2: 2019-10-09
    Changes: Data collection, Derived calculations, Other